~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/fs/f2fs/f2fs.h

Version: ~ [ linux-5.14-rc3 ] ~ [ linux-5.13.5 ] ~ [ linux-5.12.19 ] ~ [ linux-5.11.22 ] ~ [ linux-5.10.53 ] ~ [ linux-5.9.16 ] ~ [ linux-5.8.18 ] ~ [ linux-5.7.19 ] ~ [ linux-5.6.19 ] ~ [ linux-5.5.19 ] ~ [ linux-5.4.135 ] ~ [ linux-5.3.18 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.198 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.240 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.276 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.276 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.18.140 ] ~ [ linux-3.16.85 ] ~ [ linux-3.14.79 ] ~ [ linux-3.12.74 ] ~ [ linux-3.10.108 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  * fs/f2fs/f2fs.h
  4  *
  5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
  6  *             http://www.samsung.com/
  7  */
  8 #ifndef _LINUX_F2FS_H
  9 #define _LINUX_F2FS_H
 10 
 11 #include <linux/uio.h>
 12 #include <linux/types.h>
 13 #include <linux/page-flags.h>
 14 #include <linux/buffer_head.h>
 15 #include <linux/slab.h>
 16 #include <linux/crc32.h>
 17 #include <linux/magic.h>
 18 #include <linux/kobject.h>
 19 #include <linux/sched.h>
 20 #include <linux/cred.h>
 21 #include <linux/vmalloc.h>
 22 #include <linux/bio.h>
 23 #include <linux/blkdev.h>
 24 #include <linux/quotaops.h>
 25 #include <linux/part_stat.h>
 26 #include <crypto/hash.h>
 27 
 28 #include <linux/fscrypt.h>
 29 #include <linux/fsverity.h>
 30 
 31 #ifdef CONFIG_F2FS_CHECK_FS
 32 #define f2fs_bug_on(sbi, condition)     BUG_ON(condition)
 33 #else
 34 #define f2fs_bug_on(sbi, condition)                                     \
 35         do {                                                            \
 36                 if (unlikely(condition)) {                              \
 37                         WARN_ON(1);                                     \
 38                         set_sbi_flag(sbi, SBI_NEED_FSCK);               \
 39                 }                                                       \
 40         } while (0)
 41 #endif
 42 
 43 enum {
 44         FAULT_KMALLOC,
 45         FAULT_KVMALLOC,
 46         FAULT_PAGE_ALLOC,
 47         FAULT_PAGE_GET,
 48         FAULT_ALLOC_BIO,
 49         FAULT_ALLOC_NID,
 50         FAULT_ORPHAN,
 51         FAULT_BLOCK,
 52         FAULT_DIR_DEPTH,
 53         FAULT_EVICT_INODE,
 54         FAULT_TRUNCATE,
 55         FAULT_READ_IO,
 56         FAULT_CHECKPOINT,
 57         FAULT_DISCARD,
 58         FAULT_WRITE_IO,
 59         FAULT_MAX,
 60 };
 61 
 62 #ifdef CONFIG_F2FS_FAULT_INJECTION
 63 #define F2FS_ALL_FAULT_TYPE             ((1 << FAULT_MAX) - 1)
 64 
 65 struct f2fs_fault_info {
 66         atomic_t inject_ops;
 67         unsigned int inject_rate;
 68         unsigned int inject_type;
 69 };
 70 
 71 extern const char *f2fs_fault_name[FAULT_MAX];
 72 #define IS_FAULT_SET(fi, type) ((fi)->inject_type & (1 << (type)))
 73 #endif
 74 
 75 /*
 76  * For mount options
 77  */
 78 #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002
 79 #define F2FS_MOUNT_DISCARD              0x00000004
 80 #define F2FS_MOUNT_NOHEAP               0x00000008
 81 #define F2FS_MOUNT_XATTR_USER           0x00000010
 82 #define F2FS_MOUNT_POSIX_ACL            0x00000020
 83 #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040
 84 #define F2FS_MOUNT_INLINE_XATTR         0x00000080
 85 #define F2FS_MOUNT_INLINE_DATA          0x00000100
 86 #define F2FS_MOUNT_INLINE_DENTRY        0x00000200
 87 #define F2FS_MOUNT_FLUSH_MERGE          0x00000400
 88 #define F2FS_MOUNT_NOBARRIER            0x00000800
 89 #define F2FS_MOUNT_FASTBOOT             0x00001000
 90 #define F2FS_MOUNT_EXTENT_CACHE         0x00002000
 91 #define F2FS_MOUNT_DATA_FLUSH           0x00008000
 92 #define F2FS_MOUNT_FAULT_INJECTION      0x00010000
 93 #define F2FS_MOUNT_USRQUOTA             0x00080000
 94 #define F2FS_MOUNT_GRPQUOTA             0x00100000
 95 #define F2FS_MOUNT_PRJQUOTA             0x00200000
 96 #define F2FS_MOUNT_QUOTA                0x00400000
 97 #define F2FS_MOUNT_INLINE_XATTR_SIZE    0x00800000
 98 #define F2FS_MOUNT_RESERVE_ROOT         0x01000000
 99 #define F2FS_MOUNT_DISABLE_CHECKPOINT   0x02000000
100 #define F2FS_MOUNT_NORECOVERY           0x04000000
101 
102 #define F2FS_OPTION(sbi)        ((sbi)->mount_opt)
103 #define clear_opt(sbi, option)  (F2FS_OPTION(sbi).opt &= ~F2FS_MOUNT_##option)
104 #define set_opt(sbi, option)    (F2FS_OPTION(sbi).opt |= F2FS_MOUNT_##option)
105 #define test_opt(sbi, option)   (F2FS_OPTION(sbi).opt & F2FS_MOUNT_##option)
106 
107 #define ver_after(a, b) (typecheck(unsigned long long, a) &&            \
108                 typecheck(unsigned long long, b) &&                     \
109                 ((long long)((a) - (b)) > 0))
110 
111 typedef u32 block_t;    /*
112                          * should not change u32, since it is the on-disk block
113                          * address format, __le32.
114                          */
115 typedef u32 nid_t;
116 
117 #define COMPRESS_EXT_NUM                16
118 
119 struct f2fs_mount_info {
120         unsigned int opt;
121         int write_io_size_bits;         /* Write IO size bits */
122         block_t root_reserved_blocks;   /* root reserved blocks */
123         kuid_t s_resuid;                /* reserved blocks for uid */
124         kgid_t s_resgid;                /* reserved blocks for gid */
125         int active_logs;                /* # of active logs */
126         int inline_xattr_size;          /* inline xattr size */
127 #ifdef CONFIG_F2FS_FAULT_INJECTION
128         struct f2fs_fault_info fault_info;      /* For fault injection */
129 #endif
130 #ifdef CONFIG_QUOTA
131         /* Names of quota files with journalled quota */
132         char *s_qf_names[MAXQUOTAS];
133         int s_jquota_fmt;                       /* Format of quota to use */
134 #endif
135         /* For which write hints are passed down to block layer */
136         int whint_mode;
137         int alloc_mode;                 /* segment allocation policy */
138         int fsync_mode;                 /* fsync policy */
139         int fs_mode;                    /* fs mode: LFS or ADAPTIVE */
140         int bggc_mode;                  /* bggc mode: off, on or sync */
141         bool test_dummy_encryption;     /* test dummy encryption */
142         block_t unusable_cap_perc;      /* percentage for cap */
143         block_t unusable_cap;           /* Amount of space allowed to be
144                                          * unusable when disabling checkpoint
145                                          */
146 
147         /* For compression */
148         unsigned char compress_algorithm;       /* algorithm type */
149         unsigned compress_log_size;             /* cluster log size */
150         unsigned char compress_ext_cnt;         /* extension count */
151         unsigned char extensions[COMPRESS_EXT_NUM][F2FS_EXTENSION_LEN]; /* extensions */
152 };
153 
154 #define F2FS_FEATURE_ENCRYPT            0x0001
155 #define F2FS_FEATURE_BLKZONED           0x0002
156 #define F2FS_FEATURE_ATOMIC_WRITE       0x0004
157 #define F2FS_FEATURE_EXTRA_ATTR         0x0008
158 #define F2FS_FEATURE_PRJQUOTA           0x0010
159 #define F2FS_FEATURE_INODE_CHKSUM       0x0020
160 #define F2FS_FEATURE_FLEXIBLE_INLINE_XATTR      0x0040
161 #define F2FS_FEATURE_QUOTA_INO          0x0080
162 #define F2FS_FEATURE_INODE_CRTIME       0x0100
163 #define F2FS_FEATURE_LOST_FOUND         0x0200
164 #define F2FS_FEATURE_VERITY             0x0400
165 #define F2FS_FEATURE_SB_CHKSUM          0x0800
166 #define F2FS_FEATURE_CASEFOLD           0x1000
167 #define F2FS_FEATURE_COMPRESSION        0x2000
168 
169 #define __F2FS_HAS_FEATURE(raw_super, mask)                             \
170         ((raw_super->feature & cpu_to_le32(mask)) != 0)
171 #define F2FS_HAS_FEATURE(sbi, mask)     __F2FS_HAS_FEATURE(sbi->raw_super, mask)
172 #define F2FS_SET_FEATURE(sbi, mask)                                     \
173         (sbi->raw_super->feature |= cpu_to_le32(mask))
174 #define F2FS_CLEAR_FEATURE(sbi, mask)                                   \
175         (sbi->raw_super->feature &= ~cpu_to_le32(mask))
176 
177 /*
178  * Default values for user and/or group using reserved blocks
179  */
180 #define F2FS_DEF_RESUID         0
181 #define F2FS_DEF_RESGID         0
182 
183 /*
184  * For checkpoint manager
185  */
186 enum {
187         NAT_BITMAP,
188         SIT_BITMAP
189 };
190 
191 #define CP_UMOUNT       0x00000001
192 #define CP_FASTBOOT     0x00000002
193 #define CP_SYNC         0x00000004
194 #define CP_RECOVERY     0x00000008
195 #define CP_DISCARD      0x00000010
196 #define CP_TRIMMED      0x00000020
197 #define CP_PAUSE        0x00000040
198 
199 #define MAX_DISCARD_BLOCKS(sbi)         BLKS_PER_SEC(sbi)
200 #define DEF_MAX_DISCARD_REQUEST         8       /* issue 8 discards per round */
201 #define DEF_MIN_DISCARD_ISSUE_TIME      50      /* 50 ms, if exists */
202 #define DEF_MID_DISCARD_ISSUE_TIME      500     /* 500 ms, if device busy */
203 #define DEF_MAX_DISCARD_ISSUE_TIME      60000   /* 60 s, if no candidates */
204 #define DEF_DISCARD_URGENT_UTIL         80      /* do more discard over 80% */
205 #define DEF_CP_INTERVAL                 60      /* 60 secs */
206 #define DEF_IDLE_INTERVAL               5       /* 5 secs */
207 #define DEF_DISABLE_INTERVAL            5       /* 5 secs */
208 #define DEF_DISABLE_QUICK_INTERVAL      1       /* 1 secs */
209 #define DEF_UMOUNT_DISCARD_TIMEOUT      5       /* 5 secs */
210 
211 struct cp_control {
212         int reason;
213         __u64 trim_start;
214         __u64 trim_end;
215         __u64 trim_minlen;
216 };
217 
218 /*
219  * indicate meta/data type
220  */
221 enum {
222         META_CP,
223         META_NAT,
224         META_SIT,
225         META_SSA,
226         META_MAX,
227         META_POR,
228         DATA_GENERIC,           /* check range only */
229         DATA_GENERIC_ENHANCE,   /* strong check on range and segment bitmap */
230         DATA_GENERIC_ENHANCE_READ,      /*
231                                          * strong check on range and segment
232                                          * bitmap but no warning due to race
233                                          * condition of read on truncated area
234                                          * by extent_cache
235                                          */
236         META_GENERIC,
237 };
238 
239 /* for the list of ino */
240 enum {
241         ORPHAN_INO,             /* for orphan ino list */
242         APPEND_INO,             /* for append ino list */
243         UPDATE_INO,             /* for update ino list */
244         TRANS_DIR_INO,          /* for trasactions dir ino list */
245         FLUSH_INO,              /* for multiple device flushing */
246         MAX_INO_ENTRY,          /* max. list */
247 };
248 
249 struct ino_entry {
250         struct list_head list;          /* list head */
251         nid_t ino;                      /* inode number */
252         unsigned int dirty_device;      /* dirty device bitmap */
253 };
254 
255 /* for the list of inodes to be GCed */
256 struct inode_entry {
257         struct list_head list;  /* list head */
258         struct inode *inode;    /* vfs inode pointer */
259 };
260 
261 struct fsync_node_entry {
262         struct list_head list;  /* list head */
263         struct page *page;      /* warm node page pointer */
264         unsigned int seq_id;    /* sequence id */
265 };
266 
267 /* for the bitmap indicate blocks to be discarded */
268 struct discard_entry {
269         struct list_head list;  /* list head */
270         block_t start_blkaddr;  /* start blockaddr of current segment */
271         unsigned char discard_map[SIT_VBLOCK_MAP_SIZE]; /* segment discard bitmap */
272 };
273 
274 /* default discard granularity of inner discard thread, unit: block count */
275 #define DEFAULT_DISCARD_GRANULARITY             16
276 
277 /* max discard pend list number */
278 #define MAX_PLIST_NUM           512
279 #define plist_idx(blk_num)      ((blk_num) >= MAX_PLIST_NUM ?           \
280                                         (MAX_PLIST_NUM - 1) : ((blk_num) - 1))
281 
282 enum {
283         D_PREP,                 /* initial */
284         D_PARTIAL,              /* partially submitted */
285         D_SUBMIT,               /* all submitted */
286         D_DONE,                 /* finished */
287 };
288 
289 struct discard_info {
290         block_t lstart;                 /* logical start address */
291         block_t len;                    /* length */
292         block_t start;                  /* actual start address in dev */
293 };
294 
295 struct discard_cmd {
296         struct rb_node rb_node;         /* rb node located in rb-tree */
297         union {
298                 struct {
299                         block_t lstart; /* logical start address */
300                         block_t len;    /* length */
301                         block_t start;  /* actual start address in dev */
302                 };
303                 struct discard_info di; /* discard info */
304 
305         };
306         struct list_head list;          /* command list */
307         struct completion wait;         /* compleation */
308         struct block_device *bdev;      /* bdev */
309         unsigned short ref;             /* reference count */
310         unsigned char state;            /* state */
311         unsigned char queued;           /* queued discard */
312         int error;                      /* bio error */
313         spinlock_t lock;                /* for state/bio_ref updating */
314         unsigned short bio_ref;         /* bio reference count */
315 };
316 
317 enum {
318         DPOLICY_BG,
319         DPOLICY_FORCE,
320         DPOLICY_FSTRIM,
321         DPOLICY_UMOUNT,
322         MAX_DPOLICY,
323 };
324 
325 struct discard_policy {
326         int type;                       /* type of discard */
327         unsigned int min_interval;      /* used for candidates exist */
328         unsigned int mid_interval;      /* used for device busy */
329         unsigned int max_interval;      /* used for candidates not exist */
330         unsigned int max_requests;      /* # of discards issued per round */
331         unsigned int io_aware_gran;     /* minimum granularity discard not be aware of I/O */
332         bool io_aware;                  /* issue discard in idle time */
333         bool sync;                      /* submit discard with REQ_SYNC flag */
334         bool ordered;                   /* issue discard by lba order */
335         bool timeout;                   /* discard timeout for put_super */
336         unsigned int granularity;       /* discard granularity */
337 };
338 
339 struct discard_cmd_control {
340         struct task_struct *f2fs_issue_discard; /* discard thread */
341         struct list_head entry_list;            /* 4KB discard entry list */
342         struct list_head pend_list[MAX_PLIST_NUM];/* store pending entries */
343         struct list_head wait_list;             /* store on-flushing entries */
344         struct list_head fstrim_list;           /* in-flight discard from fstrim */
345         wait_queue_head_t discard_wait_queue;   /* waiting queue for wake-up */
346         unsigned int discard_wake;              /* to wake up discard thread */
347         struct mutex cmd_lock;
348         unsigned int nr_discards;               /* # of discards in the list */
349         unsigned int max_discards;              /* max. discards to be issued */
350         unsigned int discard_granularity;       /* discard granularity */
351         unsigned int undiscard_blks;            /* # of undiscard blocks */
352         unsigned int next_pos;                  /* next discard position */
353         atomic_t issued_discard;                /* # of issued discard */
354         atomic_t queued_discard;                /* # of queued discard */
355         atomic_t discard_cmd_cnt;               /* # of cached cmd count */
356         struct rb_root_cached root;             /* root of discard rb-tree */
357         bool rbtree_check;                      /* config for consistence check */
358 };
359 
360 /* for the list of fsync inodes, used only during recovery */
361 struct fsync_inode_entry {
362         struct list_head list;  /* list head */
363         struct inode *inode;    /* vfs inode pointer */
364         block_t blkaddr;        /* block address locating the last fsync */
365         block_t last_dentry;    /* block address locating the last dentry */
366 };
367 
368 #define nats_in_cursum(jnl)             (le16_to_cpu((jnl)->n_nats))
369 #define sits_in_cursum(jnl)             (le16_to_cpu((jnl)->n_sits))
370 
371 #define nat_in_journal(jnl, i)          ((jnl)->nat_j.entries[i].ne)
372 #define nid_in_journal(jnl, i)          ((jnl)->nat_j.entries[i].nid)
373 #define sit_in_journal(jnl, i)          ((jnl)->sit_j.entries[i].se)
374 #define segno_in_journal(jnl, i)        ((jnl)->sit_j.entries[i].segno)
375 
376 #define MAX_NAT_JENTRIES(jnl)   (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl))
377 #define MAX_SIT_JENTRIES(jnl)   (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl))
378 
379 static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i)
380 {
381         int before = nats_in_cursum(journal);
382 
383         journal->n_nats = cpu_to_le16(before + i);
384         return before;
385 }
386 
387 static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i)
388 {
389         int before = sits_in_cursum(journal);
390 
391         journal->n_sits = cpu_to_le16(before + i);
392         return before;
393 }
394 
395 static inline bool __has_cursum_space(struct f2fs_journal *journal,
396                                                         int size, int type)
397 {
398         if (type == NAT_JOURNAL)
399                 return size <= MAX_NAT_JENTRIES(journal);
400         return size <= MAX_SIT_JENTRIES(journal);
401 }
402 
403 /*
404  * ioctl commands
405  */
406 #define F2FS_IOC_GETFLAGS               FS_IOC_GETFLAGS
407 #define F2FS_IOC_SETFLAGS               FS_IOC_SETFLAGS
408 #define F2FS_IOC_GETVERSION             FS_IOC_GETVERSION
409 
410 #define F2FS_IOCTL_MAGIC                0xf5
411 #define F2FS_IOC_START_ATOMIC_WRITE     _IO(F2FS_IOCTL_MAGIC, 1)
412 #define F2FS_IOC_COMMIT_ATOMIC_WRITE    _IO(F2FS_IOCTL_MAGIC, 2)
413 #define F2FS_IOC_START_VOLATILE_WRITE   _IO(F2FS_IOCTL_MAGIC, 3)
414 #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4)
415 #define F2FS_IOC_ABORT_VOLATILE_WRITE   _IO(F2FS_IOCTL_MAGIC, 5)
416 #define F2FS_IOC_GARBAGE_COLLECT        _IOW(F2FS_IOCTL_MAGIC, 6, __u32)
417 #define F2FS_IOC_WRITE_CHECKPOINT       _IO(F2FS_IOCTL_MAGIC, 7)
418 #define F2FS_IOC_DEFRAGMENT             _IOWR(F2FS_IOCTL_MAGIC, 8,      \
419                                                 struct f2fs_defragment)
420 #define F2FS_IOC_MOVE_RANGE             _IOWR(F2FS_IOCTL_MAGIC, 9,      \
421                                                 struct f2fs_move_range)
422 #define F2FS_IOC_FLUSH_DEVICE           _IOW(F2FS_IOCTL_MAGIC, 10,      \
423                                                 struct f2fs_flush_device)
424 #define F2FS_IOC_GARBAGE_COLLECT_RANGE  _IOW(F2FS_IOCTL_MAGIC, 11,      \
425                                                 struct f2fs_gc_range)
426 #define F2FS_IOC_GET_FEATURES           _IOR(F2FS_IOCTL_MAGIC, 12, __u32)
427 #define F2FS_IOC_SET_PIN_FILE           _IOW(F2FS_IOCTL_MAGIC, 13, __u32)
428 #define F2FS_IOC_GET_PIN_FILE           _IOR(F2FS_IOCTL_MAGIC, 14, __u32)
429 #define F2FS_IOC_PRECACHE_EXTENTS       _IO(F2FS_IOCTL_MAGIC, 15)
430 #define F2FS_IOC_RESIZE_FS              _IOW(F2FS_IOCTL_MAGIC, 16, __u64)
431 #define F2FS_IOC_GET_COMPRESS_BLOCKS    _IOR(F2FS_IOCTL_MAGIC, 17, __u64)
432 
433 #define F2FS_IOC_GET_VOLUME_NAME        FS_IOC_GETFSLABEL
434 #define F2FS_IOC_SET_VOLUME_NAME        FS_IOC_SETFSLABEL
435 
436 #define F2FS_IOC_SET_ENCRYPTION_POLICY  FS_IOC_SET_ENCRYPTION_POLICY
437 #define F2FS_IOC_GET_ENCRYPTION_POLICY  FS_IOC_GET_ENCRYPTION_POLICY
438 #define F2FS_IOC_GET_ENCRYPTION_PWSALT  FS_IOC_GET_ENCRYPTION_PWSALT
439 
440 /*
441  * should be same as XFS_IOC_GOINGDOWN.
442  * Flags for going down operation used by FS_IOC_GOINGDOWN
443  */
444 #define F2FS_IOC_SHUTDOWN       _IOR('X', 125, __u32)   /* Shutdown */
445 #define F2FS_GOING_DOWN_FULLSYNC        0x0     /* going down with full sync */
446 #define F2FS_GOING_DOWN_METASYNC        0x1     /* going down with metadata */
447 #define F2FS_GOING_DOWN_NOSYNC          0x2     /* going down */
448 #define F2FS_GOING_DOWN_METAFLUSH       0x3     /* going down with meta flush */
449 #define F2FS_GOING_DOWN_NEED_FSCK       0x4     /* going down to trigger fsck */
450 
451 #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
452 /*
453  * ioctl commands in 32 bit emulation
454  */
455 #define F2FS_IOC32_GETFLAGS             FS_IOC32_GETFLAGS
456 #define F2FS_IOC32_SETFLAGS             FS_IOC32_SETFLAGS
457 #define F2FS_IOC32_GETVERSION           FS_IOC32_GETVERSION
458 #endif
459 
460 #define F2FS_IOC_FSGETXATTR             FS_IOC_FSGETXATTR
461 #define F2FS_IOC_FSSETXATTR             FS_IOC_FSSETXATTR
462 
463 struct f2fs_gc_range {
464         u32 sync;
465         u64 start;
466         u64 len;
467 };
468 
469 struct f2fs_defragment {
470         u64 start;
471         u64 len;
472 };
473 
474 struct f2fs_move_range {
475         u32 dst_fd;             /* destination fd */
476         u64 pos_in;             /* start position in src_fd */
477         u64 pos_out;            /* start position in dst_fd */
478         u64 len;                /* size to move */
479 };
480 
481 struct f2fs_flush_device {
482         u32 dev_num;            /* device number to flush */
483         u32 segments;           /* # of segments to flush */
484 };
485 
486 /* for inline stuff */
487 #define DEF_INLINE_RESERVED_SIZE        1
488 static inline int get_extra_isize(struct inode *inode);
489 static inline int get_inline_xattr_addrs(struct inode *inode);
490 #define MAX_INLINE_DATA(inode)  (sizeof(__le32) *                       \
491                                 (CUR_ADDRS_PER_INODE(inode) -           \
492                                 get_inline_xattr_addrs(inode) - \
493                                 DEF_INLINE_RESERVED_SIZE))
494 
495 /* for inline dir */
496 #define NR_INLINE_DENTRY(inode) (MAX_INLINE_DATA(inode) * BITS_PER_BYTE / \
497                                 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
498                                 BITS_PER_BYTE + 1))
499 #define INLINE_DENTRY_BITMAP_SIZE(inode) \
500         DIV_ROUND_UP(NR_INLINE_DENTRY(inode), BITS_PER_BYTE)
501 #define INLINE_RESERVED_SIZE(inode)     (MAX_INLINE_DATA(inode) - \
502                                 ((SIZE_OF_DIR_ENTRY + F2FS_SLOT_LEN) * \
503                                 NR_INLINE_DENTRY(inode) + \
504                                 INLINE_DENTRY_BITMAP_SIZE(inode)))
505 
506 /*
507  * For INODE and NODE manager
508  */
509 /* for directory operations */
510 struct f2fs_dentry_ptr {
511         struct inode *inode;
512         void *bitmap;
513         struct f2fs_dir_entry *dentry;
514         __u8 (*filename)[F2FS_SLOT_LEN];
515         int max;
516         int nr_bitmap;
517 };
518 
519 static inline void make_dentry_ptr_block(struct inode *inode,
520                 struct f2fs_dentry_ptr *d, struct f2fs_dentry_block *t)
521 {
522         d->inode = inode;
523         d->max = NR_DENTRY_IN_BLOCK;
524         d->nr_bitmap = SIZE_OF_DENTRY_BITMAP;
525         d->bitmap = t->dentry_bitmap;
526         d->dentry = t->dentry;
527         d->filename = t->filename;
528 }
529 
530 static inline void make_dentry_ptr_inline(struct inode *inode,
531                                         struct f2fs_dentry_ptr *d, void *t)
532 {
533         int entry_cnt = NR_INLINE_DENTRY(inode);
534         int bitmap_size = INLINE_DENTRY_BITMAP_SIZE(inode);
535         int reserved_size = INLINE_RESERVED_SIZE(inode);
536 
537         d->inode = inode;
538         d->max = entry_cnt;
539         d->nr_bitmap = bitmap_size;
540         d->bitmap = t;
541         d->dentry = t + bitmap_size + reserved_size;
542         d->filename = t + bitmap_size + reserved_size +
543                                         SIZE_OF_DIR_ENTRY * entry_cnt;
544 }
545 
546 /*
547  * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1
548  * as its node offset to distinguish from index node blocks.
549  * But some bits are used to mark the node block.
550  */
551 #define XATTR_NODE_OFFSET       ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \
552                                 >> OFFSET_BIT_SHIFT)
553 enum {
554         ALLOC_NODE,                     /* allocate a new node page if needed */
555         LOOKUP_NODE,                    /* look up a node without readahead */
556         LOOKUP_NODE_RA,                 /*
557                                          * look up a node with readahead called
558                                          * by get_data_block.
559                                          */
560 };
561 
562 #define DEFAULT_RETRY_IO_COUNT  8       /* maximum retry read IO count */
563 
564 /* congestion wait timeout value, default: 20ms */
565 #define DEFAULT_IO_TIMEOUT      (msecs_to_jiffies(20))
566 
567 /* maximum retry quota flush count */
568 #define DEFAULT_RETRY_QUOTA_FLUSH_COUNT         8
569 
570 #define F2FS_LINK_MAX   0xffffffff      /* maximum link count per file */
571 
572 #define MAX_DIR_RA_PAGES        4       /* maximum ra pages of dir */
573 
574 /* for in-memory extent cache entry */
575 #define F2FS_MIN_EXTENT_LEN     64      /* minimum extent length */
576 
577 /* number of extent info in extent cache we try to shrink */
578 #define EXTENT_CACHE_SHRINK_NUMBER      128
579 
580 struct rb_entry {
581         struct rb_node rb_node;         /* rb node located in rb-tree */
582         unsigned int ofs;               /* start offset of the entry */
583         unsigned int len;               /* length of the entry */
584 };
585 
586 struct extent_info {
587         unsigned int fofs;              /* start offset in a file */
588         unsigned int len;               /* length of the extent */
589         u32 blk;                        /* start block address of the extent */
590 };
591 
592 struct extent_node {
593         struct rb_node rb_node;         /* rb node located in rb-tree */
594         struct extent_info ei;          /* extent info */
595         struct list_head list;          /* node in global extent list of sbi */
596         struct extent_tree *et;         /* extent tree pointer */
597 };
598 
599 struct extent_tree {
600         nid_t ino;                      /* inode number */
601         struct rb_root_cached root;     /* root of extent info rb-tree */
602         struct extent_node *cached_en;  /* recently accessed extent node */
603         struct extent_info largest;     /* largested extent info */
604         struct list_head list;          /* to be used by sbi->zombie_list */
605         rwlock_t lock;                  /* protect extent info rb-tree */
606         atomic_t node_cnt;              /* # of extent node in rb-tree*/
607         bool largest_updated;           /* largest extent updated */
608 };
609 
610 /*
611  * This structure is taken from ext4_map_blocks.
612  *
613  * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks().
614  */
615 #define F2FS_MAP_NEW            (1 << BH_New)
616 #define F2FS_MAP_MAPPED         (1 << BH_Mapped)
617 #define F2FS_MAP_UNWRITTEN      (1 << BH_Unwritten)
618 #define F2FS_MAP_FLAGS          (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\
619                                 F2FS_MAP_UNWRITTEN)
620 
621 struct f2fs_map_blocks {
622         block_t m_pblk;
623         block_t m_lblk;
624         unsigned int m_len;
625         unsigned int m_flags;
626         pgoff_t *m_next_pgofs;          /* point next possible non-hole pgofs */
627         pgoff_t *m_next_extent;         /* point to next possible extent */
628         int m_seg_type;
629         bool m_may_create;              /* indicate it is from write path */
630 };
631 
632 /* for flag in get_data_block */
633 enum {
634         F2FS_GET_BLOCK_DEFAULT,
635         F2FS_GET_BLOCK_FIEMAP,
636         F2FS_GET_BLOCK_BMAP,
637         F2FS_GET_BLOCK_DIO,
638         F2FS_GET_BLOCK_PRE_DIO,
639         F2FS_GET_BLOCK_PRE_AIO,
640         F2FS_GET_BLOCK_PRECACHE,
641 };
642 
643 /*
644  * i_advise uses FADVISE_XXX_BIT. We can add additional hints later.
645  */
646 #define FADVISE_COLD_BIT        0x01
647 #define FADVISE_LOST_PINO_BIT   0x02
648 #define FADVISE_ENCRYPT_BIT     0x04
649 #define FADVISE_ENC_NAME_BIT    0x08
650 #define FADVISE_KEEP_SIZE_BIT   0x10
651 #define FADVISE_HOT_BIT         0x20
652 #define FADVISE_VERITY_BIT      0x40
653 
654 #define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT)
655 
656 #define file_is_cold(inode)     is_file(inode, FADVISE_COLD_BIT)
657 #define file_wrong_pino(inode)  is_file(inode, FADVISE_LOST_PINO_BIT)
658 #define file_set_cold(inode)    set_file(inode, FADVISE_COLD_BIT)
659 #define file_lost_pino(inode)   set_file(inode, FADVISE_LOST_PINO_BIT)
660 #define file_clear_cold(inode)  clear_file(inode, FADVISE_COLD_BIT)
661 #define file_got_pino(inode)    clear_file(inode, FADVISE_LOST_PINO_BIT)
662 #define file_is_encrypt(inode)  is_file(inode, FADVISE_ENCRYPT_BIT)
663 #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT)
664 #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT)
665 #define file_enc_name(inode)    is_file(inode, FADVISE_ENC_NAME_BIT)
666 #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT)
667 #define file_keep_isize(inode)  is_file(inode, FADVISE_KEEP_SIZE_BIT)
668 #define file_set_keep_isize(inode) set_file(inode, FADVISE_KEEP_SIZE_BIT)
669 #define file_is_hot(inode)      is_file(inode, FADVISE_HOT_BIT)
670 #define file_set_hot(inode)     set_file(inode, FADVISE_HOT_BIT)
671 #define file_clear_hot(inode)   clear_file(inode, FADVISE_HOT_BIT)
672 #define file_is_verity(inode)   is_file(inode, FADVISE_VERITY_BIT)
673 #define file_set_verity(inode)  set_file(inode, FADVISE_VERITY_BIT)
674 
675 #define DEF_DIR_LEVEL           0
676 
677 enum {
678         GC_FAILURE_PIN,
679         GC_FAILURE_ATOMIC,
680         MAX_GC_FAILURE
681 };
682 
683 /* used for f2fs_inode_info->flags */
684 enum {
685         FI_NEW_INODE,           /* indicate newly allocated inode */
686         FI_DIRTY_INODE,         /* indicate inode is dirty or not */
687         FI_AUTO_RECOVER,        /* indicate inode is recoverable */
688         FI_DIRTY_DIR,           /* indicate directory has dirty pages */
689         FI_INC_LINK,            /* need to increment i_nlink */
690         FI_ACL_MODE,            /* indicate acl mode */
691         FI_NO_ALLOC,            /* should not allocate any blocks */
692         FI_FREE_NID,            /* free allocated nide */
693         FI_NO_EXTENT,           /* not to use the extent cache */
694         FI_INLINE_XATTR,        /* used for inline xattr */
695         FI_INLINE_DATA,         /* used for inline data*/
696         FI_INLINE_DENTRY,       /* used for inline dentry */
697         FI_APPEND_WRITE,        /* inode has appended data */
698         FI_UPDATE_WRITE,        /* inode has in-place-update data */
699         FI_NEED_IPU,            /* used for ipu per file */
700         FI_ATOMIC_FILE,         /* indicate atomic file */
701         FI_ATOMIC_COMMIT,       /* indicate the state of atomical committing */
702         FI_VOLATILE_FILE,       /* indicate volatile file */
703         FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */
704         FI_DROP_CACHE,          /* drop dirty page cache */
705         FI_DATA_EXIST,          /* indicate data exists */
706         FI_INLINE_DOTS,         /* indicate inline dot dentries */
707         FI_DO_DEFRAG,           /* indicate defragment is running */
708         FI_DIRTY_FILE,          /* indicate regular/symlink has dirty pages */
709         FI_NO_PREALLOC,         /* indicate skipped preallocated blocks */
710         FI_HOT_DATA,            /* indicate file is hot */
711         FI_EXTRA_ATTR,          /* indicate file has extra attribute */
712         FI_PROJ_INHERIT,        /* indicate file inherits projectid */
713         FI_PIN_FILE,            /* indicate file should not be gced */
714         FI_ATOMIC_REVOKE_REQUEST, /* request to drop atomic data */
715         FI_VERITY_IN_PROGRESS,  /* building fs-verity Merkle tree */
716         FI_COMPRESSED_FILE,     /* indicate file's data can be compressed */
717         FI_MMAP_FILE,           /* indicate file was mmapped */
718         FI_MAX,                 /* max flag, never be used */
719 };
720 
721 struct f2fs_inode_info {
722         struct inode vfs_inode;         /* serve a vfs inode */
723         unsigned long i_flags;          /* keep an inode flags for ioctl */
724         unsigned char i_advise;         /* use to give file attribute hints */
725         unsigned char i_dir_level;      /* use for dentry level for large dir */
726         unsigned int i_current_depth;   /* only for directory depth */
727         /* for gc failure statistic */
728         unsigned int i_gc_failures[MAX_GC_FAILURE];
729         unsigned int i_pino;            /* parent inode number */
730         umode_t i_acl_mode;             /* keep file acl mode temporarily */
731 
732         /* Use below internally in f2fs*/
733         unsigned long flags[BITS_TO_LONGS(FI_MAX)];     /* use to pass per-file flags */
734         struct rw_semaphore i_sem;      /* protect fi info */
735         atomic_t dirty_pages;           /* # of dirty pages */
736         f2fs_hash_t chash;              /* hash value of given file name */
737         unsigned int clevel;            /* maximum level of given file name */
738         struct task_struct *task;       /* lookup and create consistency */
739         struct task_struct *cp_task;    /* separate cp/wb IO stats*/
740         nid_t i_xattr_nid;              /* node id that contains xattrs */
741         loff_t  last_disk_size;         /* lastly written file size */
742         spinlock_t i_size_lock;         /* protect last_disk_size */
743 
744 #ifdef CONFIG_QUOTA
745         struct dquot *i_dquot[MAXQUOTAS];
746 
747         /* quota space reservation, managed internally by quota code */
748         qsize_t i_reserved_quota;
749 #endif
750         struct list_head dirty_list;    /* dirty list for dirs and files */
751         struct list_head gdirty_list;   /* linked in global dirty list */
752         struct list_head inmem_ilist;   /* list for inmem inodes */
753         struct list_head inmem_pages;   /* inmemory pages managed by f2fs */
754         struct task_struct *inmem_task; /* store inmemory task */
755         struct mutex inmem_lock;        /* lock for inmemory pages */
756         struct extent_tree *extent_tree;        /* cached extent_tree entry */
757 
758         /* avoid racing between foreground op and gc */
759         struct rw_semaphore i_gc_rwsem[2];
760         struct rw_semaphore i_mmap_sem;
761         struct rw_semaphore i_xattr_sem; /* avoid racing between reading and changing EAs */
762 
763         int i_extra_isize;              /* size of extra space located in i_addr */
764         kprojid_t i_projid;             /* id for project quota */
765         int i_inline_xattr_size;        /* inline xattr size */
766         struct timespec64 i_crtime;     /* inode creation time */
767         struct timespec64 i_disk_time[4];/* inode disk times */
768 
769         /* for file compress */
770         u64 i_compr_blocks;                     /* # of compressed blocks */
771         unsigned char i_compress_algorithm;     /* algorithm type */
772         unsigned char i_log_cluster_size;       /* log of cluster size */
773         unsigned int i_cluster_size;            /* cluster size */
774 };
775 
776 static inline void get_extent_info(struct extent_info *ext,
777                                         struct f2fs_extent *i_ext)
778 {
779         ext->fofs = le32_to_cpu(i_ext->fofs);
780         ext->blk = le32_to_cpu(i_ext->blk);
781         ext->len = le32_to_cpu(i_ext->len);
782 }
783 
784 static inline void set_raw_extent(struct extent_info *ext,
785                                         struct f2fs_extent *i_ext)
786 {
787         i_ext->fofs = cpu_to_le32(ext->fofs);
788         i_ext->blk = cpu_to_le32(ext->blk);
789         i_ext->len = cpu_to_le32(ext->len);
790 }
791 
792 static inline void set_extent_info(struct extent_info *ei, unsigned int fofs,
793                                                 u32 blk, unsigned int len)
794 {
795         ei->fofs = fofs;
796         ei->blk = blk;
797         ei->len = len;
798 }
799 
800 static inline bool __is_discard_mergeable(struct discard_info *back,
801                         struct discard_info *front, unsigned int max_len)
802 {
803         return (back->lstart + back->len == front->lstart) &&
804                 (back->len + front->len <= max_len);
805 }
806 
807 static inline bool __is_discard_back_mergeable(struct discard_info *cur,
808                         struct discard_info *back, unsigned int max_len)
809 {
810         return __is_discard_mergeable(back, cur, max_len);
811 }
812 
813 static inline bool __is_discard_front_mergeable(struct discard_info *cur,
814                         struct discard_info *front, unsigned int max_len)
815 {
816         return __is_discard_mergeable(cur, front, max_len);
817 }
818 
819 static inline bool __is_extent_mergeable(struct extent_info *back,
820                                                 struct extent_info *front)
821 {
822         return (back->fofs + back->len == front->fofs &&
823                         back->blk + back->len == front->blk);
824 }
825 
826 static inline bool __is_back_mergeable(struct extent_info *cur,
827                                                 struct extent_info *back)
828 {
829         return __is_extent_mergeable(back, cur);
830 }
831 
832 static inline bool __is_front_mergeable(struct extent_info *cur,
833                                                 struct extent_info *front)
834 {
835         return __is_extent_mergeable(cur, front);
836 }
837 
838 extern void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync);
839 static inline void __try_update_largest_extent(struct extent_tree *et,
840                                                 struct extent_node *en)
841 {
842         if (en->ei.len > et->largest.len) {
843                 et->largest = en->ei;
844                 et->largest_updated = true;
845         }
846 }
847 
848 /*
849  * For free nid management
850  */
851 enum nid_state {
852         FREE_NID,               /* newly added to free nid list */
853         PREALLOC_NID,           /* it is preallocated */
854         MAX_NID_STATE,
855 };
856 
857 struct f2fs_nm_info {
858         block_t nat_blkaddr;            /* base disk address of NAT */
859         nid_t max_nid;                  /* maximum possible node ids */
860         nid_t available_nids;           /* # of available node ids */
861         nid_t next_scan_nid;            /* the next nid to be scanned */
862         unsigned int ram_thresh;        /* control the memory footprint */
863         unsigned int ra_nid_pages;      /* # of nid pages to be readaheaded */
864         unsigned int dirty_nats_ratio;  /* control dirty nats ratio threshold */
865 
866         /* NAT cache management */
867         struct radix_tree_root nat_root;/* root of the nat entry cache */
868         struct radix_tree_root nat_set_root;/* root of the nat set cache */
869         struct rw_semaphore nat_tree_lock;      /* protect nat_tree_lock */
870         struct list_head nat_entries;   /* cached nat entry list (clean) */
871         spinlock_t nat_list_lock;       /* protect clean nat entry list */
872         unsigned int nat_cnt;           /* the # of cached nat entries */
873         unsigned int dirty_nat_cnt;     /* total num of nat entries in set */
874         unsigned int nat_blocks;        /* # of nat blocks */
875 
876         /* free node ids management */
877         struct radix_tree_root free_nid_root;/* root of the free_nid cache */
878         struct list_head free_nid_list;         /* list for free nids excluding preallocated nids */
879         unsigned int nid_cnt[MAX_NID_STATE];    /* the number of free node id */
880         spinlock_t nid_list_lock;       /* protect nid lists ops */
881         struct mutex build_lock;        /* lock for build free nids */
882         unsigned char **free_nid_bitmap;
883         unsigned char *nat_block_bitmap;
884         unsigned short *free_nid_count; /* free nid count of NAT block */
885 
886         /* for checkpoint */
887         char *nat_bitmap;               /* NAT bitmap pointer */
888 
889         unsigned int nat_bits_blocks;   /* # of nat bits blocks */
890         unsigned char *nat_bits;        /* NAT bits blocks */
891         unsigned char *full_nat_bits;   /* full NAT pages */
892         unsigned char *empty_nat_bits;  /* empty NAT pages */
893 #ifdef CONFIG_F2FS_CHECK_FS
894         char *nat_bitmap_mir;           /* NAT bitmap mirror */
895 #endif
896         int bitmap_size;                /* bitmap size */
897 };
898 
899 /*
900  * this structure is used as one of function parameters.
901  * all the information are dedicated to a given direct node block determined
902  * by the data offset in a file.
903  */
904 struct dnode_of_data {
905         struct inode *inode;            /* vfs inode pointer */
906         struct page *inode_page;        /* its inode page, NULL is possible */
907         struct page *node_page;         /* cached direct node page */
908         nid_t nid;                      /* node id of the direct node block */
909         unsigned int ofs_in_node;       /* data offset in the node page */
910         bool inode_page_locked;         /* inode page is locked or not */
911         bool node_changed;              /* is node block changed */
912         char cur_level;                 /* level of hole node page */
913         char max_level;                 /* level of current page located */
914         block_t data_blkaddr;           /* block address of the node block */
915 };
916 
917 static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode,
918                 struct page *ipage, struct page *npage, nid_t nid)
919 {
920         memset(dn, 0, sizeof(*dn));
921         dn->inode = inode;
922         dn->inode_page = ipage;
923         dn->node_page = npage;
924         dn->nid = nid;
925 }
926 
927 /*
928  * For SIT manager
929  *
930  * By default, there are 6 active log areas across the whole main area.
931  * When considering hot and cold data separation to reduce cleaning overhead,
932  * we split 3 for data logs and 3 for node logs as hot, warm, and cold types,
933  * respectively.
934  * In the current design, you should not change the numbers intentionally.
935  * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6
936  * logs individually according to the underlying devices. (default: 6)
937  * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for
938  * data and 8 for node logs.
939  */
940 #define NR_CURSEG_DATA_TYPE     (3)
941 #define NR_CURSEG_NODE_TYPE     (3)
942 #define NR_CURSEG_TYPE  (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE)
943 
944 enum {
945         CURSEG_HOT_DATA = 0,    /* directory entry blocks */
946         CURSEG_WARM_DATA,       /* data blocks */
947         CURSEG_COLD_DATA,       /* multimedia or GCed data blocks */
948         CURSEG_HOT_NODE,        /* direct node blocks of directory files */
949         CURSEG_WARM_NODE,       /* direct node blocks of normal files */
950         CURSEG_COLD_NODE,       /* indirect node blocks */
951         NO_CHECK_TYPE,
952         CURSEG_COLD_DATA_PINNED,/* cold data for pinned file */
953 };
954 
955 struct flush_cmd {
956         struct completion wait;
957         struct llist_node llnode;
958         nid_t ino;
959         int ret;
960 };
961 
962 struct flush_cmd_control {
963         struct task_struct *f2fs_issue_flush;   /* flush thread */
964         wait_queue_head_t flush_wait_queue;     /* waiting queue for wake-up */
965         atomic_t issued_flush;                  /* # of issued flushes */
966         atomic_t queued_flush;                  /* # of queued flushes */
967         struct llist_head issue_list;           /* list for command issue */
968         struct llist_node *dispatch_list;       /* list for command dispatch */
969 };
970 
971 struct f2fs_sm_info {
972         struct sit_info *sit_info;              /* whole segment information */
973         struct free_segmap_info *free_info;     /* free segment information */
974         struct dirty_seglist_info *dirty_info;  /* dirty segment information */
975         struct curseg_info *curseg_array;       /* active segment information */
976 
977         struct rw_semaphore curseg_lock;        /* for preventing curseg change */
978 
979         block_t seg0_blkaddr;           /* block address of 0'th segment */
980         block_t main_blkaddr;           /* start block address of main area */
981         block_t ssa_blkaddr;            /* start block address of SSA area */
982 
983         unsigned int segment_count;     /* total # of segments */
984         unsigned int main_segments;     /* # of segments in main area */
985         unsigned int reserved_segments; /* # of reserved segments */
986         unsigned int ovp_segments;      /* # of overprovision segments */
987 
988         /* a threshold to reclaim prefree segments */
989         unsigned int rec_prefree_segments;
990 
991         /* for batched trimming */
992         unsigned int trim_sections;             /* # of sections to trim */
993 
994         struct list_head sit_entry_set; /* sit entry set list */
995 
996         unsigned int ipu_policy;        /* in-place-update policy */
997         unsigned int min_ipu_util;      /* in-place-update threshold */
998         unsigned int min_fsync_blocks;  /* threshold for fsync */
999         unsigned int min_seq_blocks;    /* threshold for sequential blocks */
1000         unsigned int min_hot_blocks;    /* threshold for hot block allocation */
1001         unsigned int min_ssr_sections;  /* threshold to trigger SSR allocation */
1002 
1003         /* for flush command control */
1004         struct flush_cmd_control *fcc_info;
1005 
1006         /* for discard command control */
1007         struct discard_cmd_control *dcc_info;
1008 };
1009 
1010 /*
1011  * For superblock
1012  */
1013 /*
1014  * COUNT_TYPE for monitoring
1015  *
1016  * f2fs monitors the number of several block types such as on-writeback,
1017  * dirty dentry blocks, dirty node blocks, and dirty meta blocks.
1018  */
1019 #define WB_DATA_TYPE(p) (__is_cp_guaranteed(p) ? F2FS_WB_CP_DATA : F2FS_WB_DATA)
1020 enum count_type {
1021         F2FS_DIRTY_DENTS,
1022         F2FS_DIRTY_DATA,
1023         F2FS_DIRTY_QDATA,
1024         F2FS_DIRTY_NODES,
1025         F2FS_DIRTY_META,
1026         F2FS_INMEM_PAGES,
1027         F2FS_DIRTY_IMETA,
1028         F2FS_WB_CP_DATA,
1029         F2FS_WB_DATA,
1030         F2FS_RD_DATA,
1031         F2FS_RD_NODE,
1032         F2FS_RD_META,
1033         F2FS_DIO_WRITE,
1034         F2FS_DIO_READ,
1035         NR_COUNT_TYPE,
1036 };
1037 
1038 /*
1039  * The below are the page types of bios used in submit_bio().
1040  * The available types are:
1041  * DATA                 User data pages. It operates as async mode.
1042  * NODE                 Node pages. It operates as async mode.
1043  * META                 FS metadata pages such as SIT, NAT, CP.
1044  * NR_PAGE_TYPE         The number of page types.
1045  * META_FLUSH           Make sure the previous pages are written
1046  *                      with waiting the bio's completion
1047  * ...                  Only can be used with META.
1048  */
1049 #define PAGE_TYPE_OF_BIO(type)  ((type) > META ? META : (type))
1050 enum page_type {
1051         DATA,
1052         NODE,
1053         META,
1054         NR_PAGE_TYPE,
1055         META_FLUSH,
1056         INMEM,          /* the below types are used by tracepoints only. */
1057         INMEM_DROP,
1058         INMEM_INVALIDATE,
1059         INMEM_REVOKE,
1060         IPU,
1061         OPU,
1062 };
1063 
1064 enum temp_type {
1065         HOT = 0,        /* must be zero for meta bio */
1066         WARM,
1067         COLD,
1068         NR_TEMP_TYPE,
1069 };
1070 
1071 enum need_lock_type {
1072         LOCK_REQ = 0,
1073         LOCK_DONE,
1074         LOCK_RETRY,
1075 };
1076 
1077 enum cp_reason_type {
1078         CP_NO_NEEDED,
1079         CP_NON_REGULAR,
1080         CP_COMPRESSED,
1081         CP_HARDLINK,
1082         CP_SB_NEED_CP,
1083         CP_WRONG_PINO,
1084         CP_NO_SPC_ROLL,
1085         CP_NODE_NEED_CP,
1086         CP_FASTBOOT_MODE,
1087         CP_SPEC_LOG_NUM,
1088         CP_RECOVER_DIR,
1089 };
1090 
1091 enum iostat_type {
1092         APP_DIRECT_IO,                  /* app direct IOs */
1093         APP_BUFFERED_IO,                /* app buffered IOs */
1094         APP_WRITE_IO,                   /* app write IOs */
1095         APP_MAPPED_IO,                  /* app mapped IOs */
1096         FS_DATA_IO,                     /* data IOs from kworker/fsync/reclaimer */
1097         FS_NODE_IO,                     /* node IOs from kworker/fsync/reclaimer */
1098         FS_META_IO,                     /* meta IOs from kworker/reclaimer */
1099         FS_GC_DATA_IO,                  /* data IOs from forground gc */
1100         FS_GC_NODE_IO,                  /* node IOs from forground gc */
1101         FS_CP_DATA_IO,                  /* data IOs from checkpoint */
1102         FS_CP_NODE_IO,                  /* node IOs from checkpoint */
1103         FS_CP_META_IO,                  /* meta IOs from checkpoint */
1104         FS_DISCARD,                     /* discard */
1105         NR_IO_TYPE,
1106 };
1107 
1108 struct f2fs_io_info {
1109         struct f2fs_sb_info *sbi;       /* f2fs_sb_info pointer */
1110         nid_t ino;              /* inode number */
1111         enum page_type type;    /* contains DATA/NODE/META/META_FLUSH */
1112         enum temp_type temp;    /* contains HOT/WARM/COLD */
1113         int op;                 /* contains REQ_OP_ */
1114         int op_flags;           /* req_flag_bits */
1115         block_t new_blkaddr;    /* new block address to be written */
1116         block_t old_blkaddr;    /* old block address before Cow */
1117         struct page *page;      /* page to be written */
1118         struct page *encrypted_page;    /* encrypted page */
1119         struct page *compressed_page;   /* compressed page */
1120         struct list_head list;          /* serialize IOs */
1121         bool submitted;         /* indicate IO submission */
1122         int need_lock;          /* indicate we need to lock cp_rwsem */
1123         bool in_list;           /* indicate fio is in io_list */
1124         bool is_por;            /* indicate IO is from recovery or not */
1125         bool retry;             /* need to reallocate block address */
1126         int compr_blocks;       /* # of compressed block addresses */
1127         bool encrypted;         /* indicate file is encrypted */
1128         enum iostat_type io_type;       /* io type */
1129         struct writeback_control *io_wbc; /* writeback control */
1130         struct bio **bio;               /* bio for ipu */
1131         sector_t *last_block;           /* last block number in bio */
1132         unsigned char version;          /* version of the node */
1133 };
1134 
1135 struct bio_entry {
1136         struct bio *bio;
1137         struct list_head list;
1138 };
1139 
1140 #define is_read_io(rw) ((rw) == READ)
1141 struct f2fs_bio_info {
1142         struct f2fs_sb_info *sbi;       /* f2fs superblock */
1143         struct bio *bio;                /* bios to merge */
1144         sector_t last_block_in_bio;     /* last block number */
1145         struct f2fs_io_info fio;        /* store buffered io info. */
1146         struct rw_semaphore io_rwsem;   /* blocking op for bio */
1147         spinlock_t io_lock;             /* serialize DATA/NODE IOs */
1148         struct list_head io_list;       /* track fios */
1149         struct list_head bio_list;      /* bio entry list head */
1150         struct rw_semaphore bio_list_lock;      /* lock to protect bio entry list */
1151 };
1152 
1153 #define FDEV(i)                         (sbi->devs[i])
1154 #define RDEV(i)                         (raw_super->devs[i])
1155 struct f2fs_dev_info {
1156         struct block_device *bdev;
1157         char path[MAX_PATH_LEN];
1158         unsigned int total_segments;
1159         block_t start_blk;
1160         block_t end_blk;
1161 #ifdef CONFIG_BLK_DEV_ZONED
1162         unsigned int nr_blkz;           /* Total number of zones */
1163         unsigned long *blkz_seq;        /* Bitmap indicating sequential zones */
1164 #endif
1165 };
1166 
1167 enum inode_type {
1168         DIR_INODE,                      /* for dirty dir inode */
1169         FILE_INODE,                     /* for dirty regular/symlink inode */
1170         DIRTY_META,                     /* for all dirtied inode metadata */
1171         ATOMIC_FILE,                    /* for all atomic files */
1172         NR_INODE_TYPE,
1173 };
1174 
1175 /* for inner inode cache management */
1176 struct inode_management {
1177         struct radix_tree_root ino_root;        /* ino entry array */
1178         spinlock_t ino_lock;                    /* for ino entry lock */
1179         struct list_head ino_list;              /* inode list head */
1180         unsigned long ino_num;                  /* number of entries */
1181 };
1182 
1183 /* For s_flag in struct f2fs_sb_info */
1184 enum {
1185         SBI_IS_DIRTY,                           /* dirty flag for checkpoint */
1186         SBI_IS_CLOSE,                           /* specify unmounting */
1187         SBI_NEED_FSCK,                          /* need fsck.f2fs to fix */
1188         SBI_POR_DOING,                          /* recovery is doing or not */
1189         SBI_NEED_SB_WRITE,                      /* need to recover superblock */
1190         SBI_NEED_CP,                            /* need to checkpoint */
1191         SBI_IS_SHUTDOWN,                        /* shutdown by ioctl */
1192         SBI_IS_RECOVERED,                       /* recovered orphan/data */
1193         SBI_CP_DISABLED,                        /* CP was disabled last mount */
1194         SBI_CP_DISABLED_QUICK,                  /* CP was disabled quickly */
1195         SBI_QUOTA_NEED_FLUSH,                   /* need to flush quota info in CP */
1196         SBI_QUOTA_SKIP_FLUSH,                   /* skip flushing quota in current CP */
1197         SBI_QUOTA_NEED_REPAIR,                  /* quota file may be corrupted */
1198         SBI_IS_RESIZEFS,                        /* resizefs is in process */
1199 };
1200 
1201 enum {
1202         CP_TIME,
1203         REQ_TIME,
1204         DISCARD_TIME,
1205         GC_TIME,
1206         DISABLE_TIME,
1207         UMOUNT_DISCARD_TIMEOUT,
1208         MAX_TIME,
1209 };
1210 
1211 enum {
1212         GC_NORMAL,
1213         GC_IDLE_CB,
1214         GC_IDLE_GREEDY,
1215         GC_URGENT,
1216 };
1217 
1218 enum {
1219         BGGC_MODE_ON,           /* background gc is on */
1220         BGGC_MODE_OFF,          /* background gc is off */
1221         BGGC_MODE_SYNC,         /*
1222                                  * background gc is on, migrating blocks
1223                                  * like foreground gc
1224                                  */
1225 };
1226 
1227 enum {
1228         FS_MODE_ADAPTIVE,       /* use both lfs/ssr allocation */
1229         FS_MODE_LFS,            /* use lfs allocation only */
1230 };
1231 
1232 enum {
1233         WHINT_MODE_OFF,         /* not pass down write hints */
1234         WHINT_MODE_USER,        /* try to pass down hints given by users */
1235         WHINT_MODE_FS,          /* pass down hints with F2FS policy */
1236 };
1237 
1238 enum {
1239         ALLOC_MODE_DEFAULT,     /* stay default */
1240         ALLOC_MODE_REUSE,       /* reuse segments as much as possible */
1241 };
1242 
1243 enum fsync_mode {
1244         FSYNC_MODE_POSIX,       /* fsync follows posix semantics */
1245         FSYNC_MODE_STRICT,      /* fsync behaves in line with ext4 */
1246         FSYNC_MODE_NOBARRIER,   /* fsync behaves nobarrier based on posix */
1247 };
1248 
1249 /*
1250  * this value is set in page as a private data which indicate that
1251  * the page is atomically written, and it is in inmem_pages list.
1252  */
1253 #define ATOMIC_WRITTEN_PAGE             ((unsigned long)-1)
1254 #define DUMMY_WRITTEN_PAGE              ((unsigned long)-2)
1255 
1256 #define IS_ATOMIC_WRITTEN_PAGE(page)                    \
1257                 (page_private(page) == (unsigned long)ATOMIC_WRITTEN_PAGE)
1258 #define IS_DUMMY_WRITTEN_PAGE(page)                     \
1259                 (page_private(page) == (unsigned long)DUMMY_WRITTEN_PAGE)
1260 
1261 #ifdef CONFIG_FS_ENCRYPTION
1262 #define DUMMY_ENCRYPTION_ENABLED(sbi) \
1263                         (unlikely(F2FS_OPTION(sbi).test_dummy_encryption))
1264 #else
1265 #define DUMMY_ENCRYPTION_ENABLED(sbi) (0)
1266 #endif
1267 
1268 /* For compression */
1269 enum compress_algorithm_type {
1270         COMPRESS_LZO,
1271         COMPRESS_LZ4,
1272         COMPRESS_ZSTD,
1273         COMPRESS_MAX,
1274 };
1275 
1276 #define COMPRESS_DATA_RESERVED_SIZE             5
1277 struct compress_data {
1278         __le32 clen;                    /* compressed data size */
1279         __le32 reserved[COMPRESS_DATA_RESERVED_SIZE];   /* reserved */
1280         u8 cdata[];                     /* compressed data */
1281 };
1282 
1283 #define COMPRESS_HEADER_SIZE    (sizeof(struct compress_data))
1284 
1285 #define F2FS_COMPRESSED_PAGE_MAGIC      0xF5F2C000
1286 
1287 /* compress context */
1288 struct compress_ctx {
1289         struct inode *inode;            /* inode the context belong to */
1290         pgoff_t cluster_idx;            /* cluster index number */
1291         unsigned int cluster_size;      /* page count in cluster */
1292         unsigned int log_cluster_size;  /* log of cluster size */
1293         struct page **rpages;           /* pages store raw data in cluster */
1294         unsigned int nr_rpages;         /* total page number in rpages */
1295         struct page **cpages;           /* pages store compressed data in cluster */
1296         unsigned int nr_cpages;         /* total page number in cpages */
1297         void *rbuf;                     /* virtual mapped address on rpages */
1298         struct compress_data *cbuf;     /* virtual mapped address on cpages */
1299         size_t rlen;                    /* valid data length in rbuf */
1300         size_t clen;                    /* valid data length in cbuf */
1301         void *private;                  /* payload buffer for specified compression algorithm */
1302         void *private2;                 /* extra payload buffer */
1303 };
1304 
1305 /* compress context for write IO path */
1306 struct compress_io_ctx {
1307         u32 magic;                      /* magic number to indicate page is compressed */
1308         struct inode *inode;            /* inode the context belong to */
1309         struct page **rpages;           /* pages store raw data in cluster */
1310         unsigned int nr_rpages;         /* total page number in rpages */
1311         refcount_t ref;                 /* referrence count of raw page */
1312 };
1313 
1314 /* decompress io context for read IO path */
1315 struct decompress_io_ctx {
1316         u32 magic;                      /* magic number to indicate page is compressed */
1317         struct inode *inode;            /* inode the context belong to */
1318         pgoff_t cluster_idx;            /* cluster index number */
1319         unsigned int cluster_size;      /* page count in cluster */
1320         unsigned int log_cluster_size;  /* log of cluster size */
1321         struct page **rpages;           /* pages store raw data in cluster */
1322         unsigned int nr_rpages;         /* total page number in rpages */
1323         struct page **cpages;           /* pages store compressed data in cluster */
1324         unsigned int nr_cpages;         /* total page number in cpages */
1325         struct page **tpages;           /* temp pages to pad holes in cluster */
1326         void *rbuf;                     /* virtual mapped address on rpages */
1327         struct compress_data *cbuf;     /* virtual mapped address on cpages */
1328         size_t rlen;                    /* valid data length in rbuf */
1329         size_t clen;                    /* valid data length in cbuf */
1330         refcount_t ref;                 /* referrence count of compressed page */
1331         bool failed;                    /* indicate IO error during decompression */
1332         void *private;                  /* payload buffer for specified decompression algorithm */
1333         void *private2;                 /* extra payload buffer */
1334 };
1335 
1336 #define NULL_CLUSTER                    ((unsigned int)(~0))
1337 #define MIN_COMPRESS_LOG_SIZE           2
1338 #define MAX_COMPRESS_LOG_SIZE           8
1339 #define MAX_COMPRESS_WINDOW_SIZE        ((PAGE_SIZE) << MAX_COMPRESS_LOG_SIZE)
1340 
1341 struct f2fs_sb_info {
1342         struct super_block *sb;                 /* pointer to VFS super block */
1343         struct proc_dir_entry *s_proc;          /* proc entry */
1344         struct f2fs_super_block *raw_super;     /* raw super block pointer */
1345         struct rw_semaphore sb_lock;            /* lock for raw super block */
1346         int valid_super_block;                  /* valid super block no */
1347         unsigned long s_flag;                           /* flags for sbi */
1348         struct mutex writepages;                /* mutex for writepages() */
1349 #ifdef CONFIG_UNICODE
1350         struct unicode_map *s_encoding;
1351         __u16 s_encoding_flags;
1352 #endif
1353 
1354 #ifdef CONFIG_BLK_DEV_ZONED
1355         unsigned int blocks_per_blkz;           /* F2FS blocks per zone */
1356         unsigned int log_blocks_per_blkz;       /* log2 F2FS blocks per zone */
1357 #endif
1358 
1359         /* for node-related operations */
1360         struct f2fs_nm_info *nm_info;           /* node manager */
1361         struct inode *node_inode;               /* cache node blocks */
1362 
1363         /* for segment-related operations */
1364         struct f2fs_sm_info *sm_info;           /* segment manager */
1365 
1366         /* for bio operations */
1367         struct f2fs_bio_info *write_io[NR_PAGE_TYPE];   /* for write bios */
1368         /* keep migration IO order for LFS mode */
1369         struct rw_semaphore io_order_lock;
1370         mempool_t *write_io_dummy;              /* Dummy pages */
1371 
1372         /* for checkpoint */
1373         struct f2fs_checkpoint *ckpt;           /* raw checkpoint pointer */
1374         int cur_cp_pack;                        /* remain current cp pack */
1375         spinlock_t cp_lock;                     /* for flag in ckpt */
1376         struct inode *meta_inode;               /* cache meta blocks */
1377         struct mutex cp_mutex;                  /* checkpoint procedure lock */
1378         struct rw_semaphore cp_rwsem;           /* blocking FS operations */
1379         struct rw_semaphore node_write;         /* locking node writes */
1380         struct rw_semaphore node_change;        /* locking node change */
1381         wait_queue_head_t cp_wait;
1382         unsigned long last_time[MAX_TIME];      /* to store time in jiffies */
1383         long interval_time[MAX_TIME];           /* to store thresholds */
1384 
1385         struct inode_management im[MAX_INO_ENTRY];      /* manage inode cache */
1386 
1387         spinlock_t fsync_node_lock;             /* for node entry lock */
1388         struct list_head fsync_node_list;       /* node list head */
1389         unsigned int fsync_seg_id;              /* sequence id */
1390         unsigned int fsync_node_num;            /* number of node entries */
1391 
1392         /* for orphan inode, use 0'th array */
1393         unsigned int max_orphans;               /* max orphan inodes */
1394 
1395         /* for inode management */
1396         struct list_head inode_list[NR_INODE_TYPE];     /* dirty inode list */
1397         spinlock_t inode_lock[NR_INODE_TYPE];   /* for dirty inode list lock */
1398         struct mutex flush_lock;                /* for flush exclusion */
1399 
1400         /* for extent tree cache */
1401         struct radix_tree_root extent_tree_root;/* cache extent cache entries */
1402         struct mutex extent_tree_lock;  /* locking extent radix tree */
1403         struct list_head extent_list;           /* lru list for shrinker */
1404         spinlock_t extent_lock;                 /* locking extent lru list */
1405         atomic_t total_ext_tree;                /* extent tree count */
1406         struct list_head zombie_list;           /* extent zombie tree list */
1407         atomic_t total_zombie_tree;             /* extent zombie tree count */
1408         atomic_t total_ext_node;                /* extent info count */
1409 
1410         /* basic filesystem units */
1411         unsigned int log_sectors_per_block;     /* log2 sectors per block */
1412         unsigned int log_blocksize;             /* log2 block size */
1413         unsigned int blocksize;                 /* block size */
1414         unsigned int root_ino_num;              /* root inode number*/
1415         unsigned int node_ino_num;              /* node inode number*/
1416         unsigned int meta_ino_num;              /* meta inode number*/
1417         unsigned int log_blocks_per_seg;        /* log2 blocks per segment */
1418         unsigned int blocks_per_seg;            /* blocks per segment */
1419         unsigned int segs_per_sec;              /* segments per section */
1420         unsigned int secs_per_zone;             /* sections per zone */
1421         unsigned int total_sections;            /* total section count */
1422         struct mutex resize_mutex;              /* for resize exclusion */
1423         unsigned int total_node_count;          /* total node block count */
1424         unsigned int total_valid_node_count;    /* valid node block count */
1425         loff_t max_file_blocks;                 /* max block index of file */
1426         int dir_level;                          /* directory level */
1427         int readdir_ra;                         /* readahead inode in readdir */
1428 
1429         block_t user_block_count;               /* # of user blocks */
1430         block_t total_valid_block_count;        /* # of valid blocks */
1431         block_t discard_blks;                   /* discard command candidats */
1432         block_t last_valid_block_count;         /* for recovery */
1433         block_t reserved_blocks;                /* configurable reserved blocks */
1434         block_t current_reserved_blocks;        /* current reserved blocks */
1435 
1436         /* Additional tracking for no checkpoint mode */
1437         block_t unusable_block_count;           /* # of blocks saved by last cp */
1438 
1439         unsigned int nquota_files;              /* # of quota sysfile */
1440         struct rw_semaphore quota_sem;          /* blocking cp for flags */
1441 
1442         /* # of pages, see count_type */
1443         atomic_t nr_pages[NR_COUNT_TYPE];
1444         /* # of allocated blocks */
1445         struct percpu_counter alloc_valid_block_count;
1446 
1447         /* writeback control */
1448         atomic_t wb_sync_req[META];     /* count # of WB_SYNC threads */
1449 
1450         /* valid inode count */
1451         struct percpu_counter total_valid_inode_count;
1452 
1453         struct f2fs_mount_info mount_opt;       /* mount options */
1454 
1455         /* for cleaning operations */
1456         struct rw_semaphore gc_lock;            /*
1457                                                  * semaphore for GC, avoid
1458                                                  * race between GC and GC or CP
1459                                                  */
1460         struct f2fs_gc_kthread  *gc_thread;     /* GC thread */
1461         unsigned int cur_victim_sec;            /* current victim section num */
1462         unsigned int gc_mode;                   /* current GC state */
1463         unsigned int next_victim_seg[2];        /* next segment in victim section */
1464         /* for skip statistic */
1465         unsigned int atomic_files;              /* # of opened atomic file */
1466         unsigned long long skipped_atomic_files[2];     /* FG_GC and BG_GC */
1467         unsigned long long skipped_gc_rwsem;            /* FG_GC only */
1468 
1469         /* threshold for gc trials on pinned files */
1470         u64 gc_pin_file_threshold;
1471         struct rw_semaphore pin_sem;
1472 
1473         /* maximum # of trials to find a victim segment for SSR and GC */
1474         unsigned int max_victim_search;
1475         /* migration granularity of garbage collection, unit: segment */
1476         unsigned int migration_granularity;
1477 
1478         /*
1479          * for stat information.
1480          * one is for the LFS mode, and the other is for the SSR mode.
1481          */
1482 #ifdef CONFIG_F2FS_STAT_FS
1483         struct f2fs_stat_info *stat_info;       /* FS status information */
1484         atomic_t meta_count[META_MAX];          /* # of meta blocks */
1485         unsigned int segment_count[2];          /* # of allocated segments */
1486         unsigned int block_count[2];            /* # of allocated blocks */
1487         atomic_t inplace_count;         /* # of inplace update */
1488         atomic64_t total_hit_ext;               /* # of lookup extent cache */
1489         atomic64_t read_hit_rbtree;             /* # of hit rbtree extent node */
1490         atomic64_t read_hit_largest;            /* # of hit largest extent node */
1491         atomic64_t read_hit_cached;             /* # of hit cached extent node */
1492         atomic_t inline_xattr;                  /* # of inline_xattr inodes */
1493         atomic_t inline_inode;                  /* # of inline_data inodes */
1494         atomic_t inline_dir;                    /* # of inline_dentry inodes */
1495         atomic_t compr_inode;                   /* # of compressed inodes */
1496         atomic_t compr_blocks;                  /* # of compressed blocks */
1497         atomic_t vw_cnt;                        /* # of volatile writes */
1498         atomic_t max_aw_cnt;                    /* max # of atomic writes */
1499         atomic_t max_vw_cnt;                    /* max # of volatile writes */
1500         unsigned int io_skip_bggc;              /* skip background gc for in-flight IO */
1501         unsigned int other_skip_bggc;           /* skip background gc for other reasons */
1502         unsigned int ndirty_inode[NR_INODE_TYPE];       /* # of dirty inodes */
1503 #endif
1504         spinlock_t stat_lock;                   /* lock for stat operations */
1505 
1506         /* For app/fs IO statistics */
1507         spinlock_t iostat_lock;
1508         unsigned long long write_iostat[NR_IO_TYPE];
1509         bool iostat_enable;
1510 
1511         /* For sysfs suppport */
1512         struct kobject s_kobj;
1513         struct completion s_kobj_unregister;
1514 
1515         /* For shrinker support */
1516         struct list_head s_list;
1517         int s_ndevs;                            /* number of devices */
1518         struct f2fs_dev_info *devs;             /* for device list */
1519         unsigned int dirty_device;              /* for checkpoint data flush */
1520         spinlock_t dev_lock;                    /* protect dirty_device */
1521         struct mutex umount_mutex;
1522         unsigned int shrinker_run_no;
1523 
1524         /* For write statistics */
1525         u64 sectors_written_start;
1526         u64 kbytes_written;
1527 
1528         /* Reference to checksum algorithm driver via cryptoapi */
1529         struct crypto_shash *s_chksum_driver;
1530 
1531         /* Precomputed FS UUID checksum for seeding other checksums */
1532         __u32 s_chksum_seed;
1533 
1534         struct workqueue_struct *post_read_wq;  /* post read workqueue */
1535 
1536         struct kmem_cache *inline_xattr_slab;   /* inline xattr entry */
1537         unsigned int inline_xattr_slab_size;    /* default inline xattr slab size */
1538 };
1539 
1540 struct f2fs_private_dio {
1541         struct inode *inode;
1542         void *orig_private;
1543         bio_end_io_t *orig_end_io;
1544         bool write;
1545 };
1546 
1547 #ifdef CONFIG_F2FS_FAULT_INJECTION
1548 #define f2fs_show_injection_info(sbi, type)                                     \
1549         printk_ratelimited("%sF2FS-fs (%s) : inject %s in %s of %pS\n", \
1550                 KERN_INFO, sbi->sb->s_id,                               \
1551                 f2fs_fault_name[type],                                  \
1552                 __func__, __builtin_return_address(0))
1553 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1554 {
1555         struct f2fs_fault_info *ffi = &F2FS_OPTION(sbi).fault_info;
1556 
1557         if (!ffi->inject_rate)
1558                 return false;
1559 
1560         if (!IS_FAULT_SET(ffi, type))
1561                 return false;
1562 
1563         atomic_inc(&ffi->inject_ops);
1564         if (atomic_read(&ffi->inject_ops) >= ffi->inject_rate) {
1565                 atomic_set(&ffi->inject_ops, 0);
1566                 return true;
1567         }
1568         return false;
1569 }
1570 #else
1571 #define f2fs_show_injection_info(sbi, type) do { } while (0)
1572 static inline bool time_to_inject(struct f2fs_sb_info *sbi, int type)
1573 {
1574         return false;
1575 }
1576 #endif
1577 
1578 /*
1579  * Test if the mounted volume is a multi-device volume.
1580  *   - For a single regular disk volume, sbi->s_ndevs is 0.
1581  *   - For a single zoned disk volume, sbi->s_ndevs is 1.
1582  *   - For a multi-device volume, sbi->s_ndevs is always 2 or more.
1583  */
1584 static inline bool f2fs_is_multi_device(struct f2fs_sb_info *sbi)
1585 {
1586         return sbi->s_ndevs > 1;
1587 }
1588 
1589 /* For write statistics. Suppose sector size is 512 bytes,
1590  * and the return value is in kbytes. s is of struct f2fs_sb_info.
1591  */
1592 #define BD_PART_WRITTEN(s)                                               \
1593 (((u64)part_stat_read((s)->sb->s_bdev->bd_part, sectors[STAT_WRITE]) -   \
1594                 (s)->sectors_written_start) >> 1)
1595 
1596 static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type)
1597 {
1598         unsigned long now = jiffies;
1599 
1600         sbi->last_time[type] = now;
1601 
1602         /* DISCARD_TIME and GC_TIME are based on REQ_TIME */
1603         if (type == REQ_TIME) {
1604                 sbi->last_time[DISCARD_TIME] = now;
1605                 sbi->last_time[GC_TIME] = now;
1606         }
1607 }
1608 
1609 static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type)
1610 {
1611         unsigned long interval = sbi->interval_time[type] * HZ;
1612 
1613         return time_after(jiffies, sbi->last_time[type] + interval);
1614 }
1615 
1616 static inline unsigned int f2fs_time_to_wait(struct f2fs_sb_info *sbi,
1617                                                 int type)
1618 {
1619         unsigned long interval = sbi->interval_time[type] * HZ;
1620         unsigned int wait_ms = 0;
1621         long delta;
1622 
1623         delta = (sbi->last_time[type] + interval) - jiffies;
1624         if (delta > 0)
1625                 wait_ms = jiffies_to_msecs(delta);
1626 
1627         return wait_ms;
1628 }
1629 
1630 /*
1631  * Inline functions
1632  */
1633 static inline u32 __f2fs_crc32(struct f2fs_sb_info *sbi, u32 crc,
1634                               const void *address, unsigned int length)
1635 {
1636         struct {
1637                 struct shash_desc shash;
1638                 char ctx[4];
1639         } desc;
1640         int err;
1641 
1642         BUG_ON(crypto_shash_descsize(sbi->s_chksum_driver) != sizeof(desc.ctx));
1643 
1644         desc.shash.tfm = sbi->s_chksum_driver;
1645         *(u32 *)desc.ctx = crc;
1646 
1647         err = crypto_shash_update(&desc.shash, address, length);
1648         BUG_ON(err);
1649 
1650         return *(u32 *)desc.ctx;
1651 }
1652 
1653 static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address,
1654                            unsigned int length)
1655 {
1656         return __f2fs_crc32(sbi, F2FS_SUPER_MAGIC, address, length);
1657 }
1658 
1659 static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc,
1660                                   void *buf, size_t buf_size)
1661 {
1662         return f2fs_crc32(sbi, buf, buf_size) == blk_crc;
1663 }
1664 
1665 static inline u32 f2fs_chksum(struct f2fs_sb_info *sbi, u32 crc,
1666                               const void *address, unsigned int length)
1667 {
1668         return __f2fs_crc32(sbi, crc, address, length);
1669 }
1670 
1671 static inline struct f2fs_inode_info *F2FS_I(struct inode *inode)
1672 {
1673         return container_of(inode, struct f2fs_inode_info, vfs_inode);
1674 }
1675 
1676 static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb)
1677 {
1678         return sb->s_fs_info;
1679 }
1680 
1681 static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode)
1682 {
1683         return F2FS_SB(inode->i_sb);
1684 }
1685 
1686 static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping)
1687 {
1688         return F2FS_I_SB(mapping->host);
1689 }
1690 
1691 static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page)
1692 {
1693         return F2FS_M_SB(page_file_mapping(page));
1694 }
1695 
1696 static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi)
1697 {
1698         return (struct f2fs_super_block *)(sbi->raw_super);
1699 }
1700 
1701 static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi)
1702 {
1703         return (struct f2fs_checkpoint *)(sbi->ckpt);
1704 }
1705 
1706 static inline struct f2fs_node *F2FS_NODE(struct page *page)
1707 {
1708         return (struct f2fs_node *)page_address(page);
1709 }
1710 
1711 static inline struct f2fs_inode *F2FS_INODE(struct page *page)
1712 {
1713         return &((struct f2fs_node *)page_address(page))->i;
1714 }
1715 
1716 static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi)
1717 {
1718         return (struct f2fs_nm_info *)(sbi->nm_info);
1719 }
1720 
1721 static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi)
1722 {
1723         return (struct f2fs_sm_info *)(sbi->sm_info);
1724 }
1725 
1726 static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi)
1727 {
1728         return (struct sit_info *)(SM_I(sbi)->sit_info);
1729 }
1730 
1731 static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi)
1732 {
1733         return (struct free_segmap_info *)(SM_I(sbi)->free_info);
1734 }
1735 
1736 static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi)
1737 {
1738         return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info);
1739 }
1740 
1741 static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi)
1742 {
1743         return sbi->meta_inode->i_mapping;
1744 }
1745 
1746 static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi)
1747 {
1748         return sbi->node_inode->i_mapping;
1749 }
1750 
1751 static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type)
1752 {
1753         return test_bit(type, &sbi->s_flag);
1754 }
1755 
1756 static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1757 {
1758         set_bit(type, &sbi->s_flag);
1759 }
1760 
1761 static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type)
1762 {
1763         clear_bit(type, &sbi->s_flag);
1764 }
1765 
1766 static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp)
1767 {
1768         return le64_to_cpu(cp->checkpoint_ver);
1769 }
1770 
1771 static inline unsigned long f2fs_qf_ino(struct super_block *sb, int type)
1772 {
1773         if (type < F2FS_MAX_QUOTAS)
1774                 return le32_to_cpu(F2FS_SB(sb)->raw_super->qf_ino[type]);
1775         return 0;
1776 }
1777 
1778 static inline __u64 cur_cp_crc(struct f2fs_checkpoint *cp)
1779 {
1780         size_t crc_offset = le32_to_cpu(cp->checksum_offset);
1781         return le32_to_cpu(*((__le32 *)((unsigned char *)cp + crc_offset)));
1782 }
1783 
1784 static inline bool __is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1785 {
1786         unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1787 
1788         return ckpt_flags & f;
1789 }
1790 
1791 static inline bool is_set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1792 {
1793         return __is_set_ckpt_flags(F2FS_CKPT(sbi), f);
1794 }
1795 
1796 static inline void __set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1797 {
1798         unsigned int ckpt_flags;
1799 
1800         ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1801         ckpt_flags |= f;
1802         cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1803 }
1804 
1805 static inline void set_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1806 {
1807         unsigned long flags;
1808 
1809         spin_lock_irqsave(&sbi->cp_lock, flags);
1810         __set_ckpt_flags(F2FS_CKPT(sbi), f);
1811         spin_unlock_irqrestore(&sbi->cp_lock, flags);
1812 }
1813 
1814 static inline void __clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f)
1815 {
1816         unsigned int ckpt_flags;
1817 
1818         ckpt_flags = le32_to_cpu(cp->ckpt_flags);
1819         ckpt_flags &= (~f);
1820         cp->ckpt_flags = cpu_to_le32(ckpt_flags);
1821 }
1822 
1823 static inline void clear_ckpt_flags(struct f2fs_sb_info *sbi, unsigned int f)
1824 {
1825         unsigned long flags;
1826 
1827         spin_lock_irqsave(&sbi->cp_lock, flags);
1828         __clear_ckpt_flags(F2FS_CKPT(sbi), f);
1829         spin_unlock_irqrestore(&sbi->cp_lock, flags);
1830 }
1831 
1832 static inline void disable_nat_bits(struct f2fs_sb_info *sbi, bool lock)
1833 {
1834         unsigned long flags;
1835         unsigned char *nat_bits;
1836 
1837         /*
1838          * In order to re-enable nat_bits we need to call fsck.f2fs by
1839          * set_sbi_flag(sbi, SBI_NEED_FSCK). But it may give huge cost,
1840          * so let's rely on regular fsck or unclean shutdown.
1841          */
1842 
1843         if (lock)
1844                 spin_lock_irqsave(&sbi->cp_lock, flags);
1845         __clear_ckpt_flags(F2FS_CKPT(sbi), CP_NAT_BITS_FLAG);
1846         nat_bits = NM_I(sbi)->nat_bits;
1847         NM_I(sbi)->nat_bits = NULL;
1848         if (lock)
1849                 spin_unlock_irqrestore(&sbi->cp_lock, flags);
1850 
1851         kvfree(nat_bits);
1852 }
1853 
1854 static inline bool enabled_nat_bits(struct f2fs_sb_info *sbi,
1855                                         struct cp_control *cpc)
1856 {
1857         bool set = is_set_ckpt_flags(sbi, CP_NAT_BITS_FLAG);
1858 
1859         return (cpc) ? (cpc->reason & CP_UMOUNT) && set : set;
1860 }
1861 
1862 static inline void f2fs_lock_op(struct f2fs_sb_info *sbi)
1863 {
1864         down_read(&sbi->cp_rwsem);
1865 }
1866 
1867 static inline int f2fs_trylock_op(struct f2fs_sb_info *sbi)
1868 {
1869         return down_read_trylock(&sbi->cp_rwsem);
1870 }
1871 
1872 static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi)
1873 {
1874         up_read(&sbi->cp_rwsem);
1875 }
1876 
1877 static inline void f2fs_lock_all(struct f2fs_sb_info *sbi)
1878 {
1879         down_write(&sbi->cp_rwsem);
1880 }
1881 
1882 static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi)
1883 {
1884         up_write(&sbi->cp_rwsem);
1885 }
1886 
1887 static inline int __get_cp_reason(struct f2fs_sb_info *sbi)
1888 {
1889         int reason = CP_SYNC;
1890 
1891         if (test_opt(sbi, FASTBOOT))
1892                 reason = CP_FASTBOOT;
1893         if (is_sbi_flag_set(sbi, SBI_IS_CLOSE))
1894                 reason = CP_UMOUNT;
1895         return reason;
1896 }
1897 
1898 static inline bool __remain_node_summaries(int reason)
1899 {
1900         return (reason & (CP_UMOUNT | CP_FASTBOOT));
1901 }
1902 
1903 static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi)
1904 {
1905         return (is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG) ||
1906                         is_set_ckpt_flags(sbi, CP_FASTBOOT_FLAG));
1907 }
1908 
1909 /*
1910  * Check whether the inode has blocks or not
1911  */
1912 static inline int F2FS_HAS_BLOCKS(struct inode *inode)
1913 {
1914         block_t xattr_block = F2FS_I(inode)->i_xattr_nid ? 1 : 0;
1915 
1916         return (inode->i_blocks >> F2FS_LOG_SECTORS_PER_BLOCK) > xattr_block;
1917 }
1918 
1919 static inline bool f2fs_has_xattr_block(unsigned int ofs)
1920 {
1921         return ofs == XATTR_NODE_OFFSET;
1922 }
1923 
1924 static inline bool __allow_reserved_blocks(struct f2fs_sb_info *sbi,
1925                                         struct inode *inode, bool cap)
1926 {
1927         if (!inode)
1928                 return true;
1929         if (!test_opt(sbi, RESERVE_ROOT))
1930                 return false;
1931         if (IS_NOQUOTA(inode))
1932                 return true;
1933         if (uid_eq(F2FS_OPTION(sbi).s_resuid, current_fsuid()))
1934                 return true;
1935         if (!gid_eq(F2FS_OPTION(sbi).s_resgid, GLOBAL_ROOT_GID) &&
1936                                         in_group_p(F2FS_OPTION(sbi).s_resgid))
1937                 return true;
1938         if (cap && capable(CAP_SYS_RESOURCE))
1939                 return true;
1940         return false;
1941 }
1942 
1943 static inline void f2fs_i_blocks_write(struct inode *, block_t, bool, bool);
1944 static inline int inc_valid_block_count(struct f2fs_sb_info *sbi,
1945                                  struct inode *inode, blkcnt_t *count)
1946 {
1947         blkcnt_t diff = 0, release = 0;
1948         block_t avail_user_block_count;
1949         int ret;
1950 
1951         ret = dquot_reserve_block(inode, *count);
1952         if (ret)
1953                 return ret;
1954 
1955         if (time_to_inject(sbi, FAULT_BLOCK)) {
1956                 f2fs_show_injection_info(sbi, FAULT_BLOCK);
1957                 release = *count;
1958                 goto release_quota;
1959         }
1960 
1961         /*
1962          * let's increase this in prior to actual block count change in order
1963          * for f2fs_sync_file to avoid data races when deciding checkpoint.
1964          */
1965         percpu_counter_add(&sbi->alloc_valid_block_count, (*count));
1966 
1967         spin_lock(&sbi->stat_lock);
1968         sbi->total_valid_block_count += (block_t)(*count);
1969         avail_user_block_count = sbi->user_block_count -
1970                                         sbi->current_reserved_blocks;
1971 
1972         if (!__allow_reserved_blocks(sbi, inode, true))
1973                 avail_user_block_count -= F2FS_OPTION(sbi).root_reserved_blocks;
1974         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED))) {
1975                 if (avail_user_block_count > sbi->unusable_block_count)
1976                         avail_user_block_count -= sbi->unusable_block_count;
1977                 else
1978                         avail_user_block_count = 0;
1979         }
1980         if (unlikely(sbi->total_valid_block_count > avail_user_block_count)) {
1981                 diff = sbi->total_valid_block_count - avail_user_block_count;
1982                 if (diff > *count)
1983                         diff = *count;
1984                 *count -= diff;
1985                 release = diff;
1986                 sbi->total_valid_block_count -= diff;
1987                 if (!*count) {
1988                         spin_unlock(&sbi->stat_lock);
1989                         goto enospc;
1990                 }
1991         }
1992         spin_unlock(&sbi->stat_lock);
1993 
1994         if (unlikely(release)) {
1995                 percpu_counter_sub(&sbi->alloc_valid_block_count, release);
1996                 dquot_release_reservation_block(inode, release);
1997         }
1998         f2fs_i_blocks_write(inode, *count, true, true);
1999         return 0;
2000 
2001 enospc:
2002         percpu_counter_sub(&sbi->alloc_valid_block_count, release);
2003 release_quota:
2004         dquot_release_reservation_block(inode, release);
2005         return -ENOSPC;
2006 }
2007 
2008 __printf(2, 3)
2009 void f2fs_printk(struct f2fs_sb_info *sbi, const char *fmt, ...);
2010 
2011 #define f2fs_err(sbi, fmt, ...)                                         \
2012         f2fs_printk(sbi, KERN_ERR fmt, ##__VA_ARGS__)
2013 #define f2fs_warn(sbi, fmt, ...)                                        \
2014         f2fs_printk(sbi, KERN_WARNING fmt, ##__VA_ARGS__)
2015 #define f2fs_notice(sbi, fmt, ...)                                      \
2016         f2fs_printk(sbi, KERN_NOTICE fmt, ##__VA_ARGS__)
2017 #define f2fs_info(sbi, fmt, ...)                                        \
2018         f2fs_printk(sbi, KERN_INFO fmt, ##__VA_ARGS__)
2019 #define f2fs_debug(sbi, fmt, ...)                                       \
2020         f2fs_printk(sbi, KERN_DEBUG fmt, ##__VA_ARGS__)
2021 
2022 static inline void dec_valid_block_count(struct f2fs_sb_info *sbi,
2023                                                 struct inode *inode,
2024                                                 block_t count)
2025 {
2026         blkcnt_t sectors = count << F2FS_LOG_SECTORS_PER_BLOCK;
2027 
2028         spin_lock(&sbi->stat_lock);
2029         f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count);
2030         sbi->total_valid_block_count -= (block_t)count;
2031         if (sbi->reserved_blocks &&
2032                 sbi->current_reserved_blocks < sbi->reserved_blocks)
2033                 sbi->current_reserved_blocks = min(sbi->reserved_blocks,
2034                                         sbi->current_reserved_blocks + count);
2035         spin_unlock(&sbi->stat_lock);
2036         if (unlikely(inode->i_blocks < sectors)) {
2037                 f2fs_warn(sbi, "Inconsistent i_blocks, ino:%lu, iblocks:%llu, sectors:%llu",
2038                           inode->i_ino,
2039                           (unsigned long long)inode->i_blocks,
2040                           (unsigned long long)sectors);
2041                 set_sbi_flag(sbi, SBI_NEED_FSCK);
2042                 return;
2043         }
2044         f2fs_i_blocks_write(inode, count, false, true);
2045 }
2046 
2047 static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type)
2048 {
2049         atomic_inc(&sbi->nr_pages[count_type]);
2050 
2051         if (count_type == F2FS_DIRTY_DENTS ||
2052                         count_type == F2FS_DIRTY_NODES ||
2053                         count_type == F2FS_DIRTY_META ||
2054                         count_type == F2FS_DIRTY_QDATA ||
2055                         count_type == F2FS_DIRTY_IMETA)
2056                 set_sbi_flag(sbi, SBI_IS_DIRTY);
2057 }
2058 
2059 static inline void inode_inc_dirty_pages(struct inode *inode)
2060 {
2061         atomic_inc(&F2FS_I(inode)->dirty_pages);
2062         inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2063                                 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2064         if (IS_NOQUOTA(inode))
2065                 inc_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2066 }
2067 
2068 static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type)
2069 {
2070         atomic_dec(&sbi->nr_pages[count_type]);
2071 }
2072 
2073 static inline void inode_dec_dirty_pages(struct inode *inode)
2074 {
2075         if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) &&
2076                         !S_ISLNK(inode->i_mode))
2077                 return;
2078 
2079         atomic_dec(&F2FS_I(inode)->dirty_pages);
2080         dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ?
2081                                 F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA);
2082         if (IS_NOQUOTA(inode))
2083                 dec_page_count(F2FS_I_SB(inode), F2FS_DIRTY_QDATA);
2084 }
2085 
2086 static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type)
2087 {
2088         return atomic_read(&sbi->nr_pages[count_type]);
2089 }
2090 
2091 static inline int get_dirty_pages(struct inode *inode)
2092 {
2093         return atomic_read(&F2FS_I(inode)->dirty_pages);
2094 }
2095 
2096 static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type)
2097 {
2098         unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg;
2099         unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >>
2100                                                 sbi->log_blocks_per_seg;
2101 
2102         return segs / sbi->segs_per_sec;
2103 }
2104 
2105 static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi)
2106 {
2107         return sbi->total_valid_block_count;
2108 }
2109 
2110 static inline block_t discard_blocks(struct f2fs_sb_info *sbi)
2111 {
2112         return sbi->discard_blks;
2113 }
2114 
2115 static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag)
2116 {
2117         struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2118 
2119         /* return NAT or SIT bitmap */
2120         if (flag == NAT_BITMAP)
2121                 return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize);
2122         else if (flag == SIT_BITMAP)
2123                 return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize);
2124 
2125         return 0;
2126 }
2127 
2128 static inline block_t __cp_payload(struct f2fs_sb_info *sbi)
2129 {
2130         return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload);
2131 }
2132 
2133 static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag)
2134 {
2135         struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi);
2136         int offset;
2137 
2138         if (is_set_ckpt_flags(sbi, CP_LARGE_NAT_BITMAP_FLAG)) {
2139                 offset = (flag == SIT_BITMAP) ?
2140                         le32_to_cpu(ckpt->nat_ver_bitmap_bytesize) : 0;
2141                 /*
2142                  * if large_nat_bitmap feature is enabled, leave checksum
2143                  * protection for all nat/sit bitmaps.
2144                  */
2145                 return &ckpt->sit_nat_version_bitmap + offset + sizeof(__le32);
2146         }
2147 
2148         if (__cp_payload(sbi) > 0) {
2149                 if (flag == NAT_BITMAP)
2150                         return &ckpt->sit_nat_version_bitmap;
2151                 else
2152                         return (unsigned char *)ckpt + F2FS_BLKSIZE;
2153         } else {
2154                 offset = (flag == NAT_BITMAP) ?
2155                         le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0;
2156                 return &ckpt->sit_nat_version_bitmap + offset;
2157         }
2158 }
2159 
2160 static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi)
2161 {
2162         block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2163 
2164         if (sbi->cur_cp_pack == 2)
2165                 start_addr += sbi->blocks_per_seg;
2166         return start_addr;
2167 }
2168 
2169 static inline block_t __start_cp_next_addr(struct f2fs_sb_info *sbi)
2170 {
2171         block_t start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr);
2172 
2173         if (sbi->cur_cp_pack == 1)
2174                 start_addr += sbi->blocks_per_seg;
2175         return start_addr;
2176 }
2177 
2178 static inline void __set_cp_next_pack(struct f2fs_sb_info *sbi)
2179 {
2180         sbi->cur_cp_pack = (sbi->cur_cp_pack == 1) ? 2 : 1;
2181 }
2182 
2183 static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi)
2184 {
2185         return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum);
2186 }
2187 
2188 static inline int inc_valid_node_count(struct f2fs_sb_info *sbi,
2189                                         struct inode *inode, bool is_inode)
2190 {
2191         block_t valid_block_count;
2192         unsigned int valid_node_count, user_block_count;
2193         int err;
2194 
2195         if (is_inode) {
2196                 if (inode) {
2197                         err = dquot_alloc_inode(inode);
2198                         if (err)
2199                                 return err;
2200                 }
2201         } else {
2202                 err = dquot_reserve_block(inode, 1);
2203                 if (err)
2204                         return err;
2205         }
2206 
2207         if (time_to_inject(sbi, FAULT_BLOCK)) {
2208                 f2fs_show_injection_info(sbi, FAULT_BLOCK);
2209                 goto enospc;
2210         }
2211 
2212         spin_lock(&sbi->stat_lock);
2213 
2214         valid_block_count = sbi->total_valid_block_count +
2215                                         sbi->current_reserved_blocks + 1;
2216 
2217         if (!__allow_reserved_blocks(sbi, inode, false))
2218                 valid_block_count += F2FS_OPTION(sbi).root_reserved_blocks;
2219         user_block_count = sbi->user_block_count;
2220         if (unlikely(is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
2221                 user_block_count -= sbi->unusable_block_count;
2222 
2223         if (unlikely(valid_block_count > user_block_count)) {
2224                 spin_unlock(&sbi->stat_lock);
2225                 goto enospc;
2226         }
2227 
2228         valid_node_count = sbi->total_valid_node_count + 1;
2229         if (unlikely(valid_node_count > sbi->total_node_count)) {
2230                 spin_unlock(&sbi->stat_lock);
2231                 goto enospc;
2232         }
2233 
2234         sbi->total_valid_node_count++;
2235         sbi->total_valid_block_count++;
2236         spin_unlock(&sbi->stat_lock);
2237 
2238         if (inode) {
2239                 if (is_inode)
2240                         f2fs_mark_inode_dirty_sync(inode, true);
2241                 else
2242                         f2fs_i_blocks_write(inode, 1, true, true);
2243         }
2244 
2245         percpu_counter_inc(&sbi->alloc_valid_block_count);
2246         return 0;
2247 
2248 enospc:
2249         if (is_inode) {
2250                 if (inode)
2251                         dquot_free_inode(inode);
2252         } else {
2253                 dquot_release_reservation_block(inode, 1);
2254         }
2255         return -ENOSPC;
2256 }
2257 
2258 static inline void dec_valid_node_count(struct f2fs_sb_info *sbi,
2259                                         struct inode *inode, bool is_inode)
2260 {
2261         spin_lock(&sbi->stat_lock);
2262 
2263         f2fs_bug_on(sbi, !sbi->total_valid_block_count);
2264         f2fs_bug_on(sbi, !sbi->total_valid_node_count);
2265 
2266         sbi->total_valid_node_count--;
2267         sbi->total_valid_block_count--;
2268         if (sbi->reserved_blocks &&
2269                 sbi->current_reserved_blocks < sbi->reserved_blocks)
2270                 sbi->current_reserved_blocks++;
2271 
2272         spin_unlock(&sbi->stat_lock);
2273 
2274         if (is_inode) {
2275                 dquot_free_inode(inode);
2276         } else {
2277                 if (unlikely(inode->i_blocks == 0)) {
2278                         f2fs_warn(sbi, "dec_valid_node_count: inconsistent i_blocks, ino:%lu, iblocks:%llu",
2279                                   inode->i_ino,
2280                                   (unsigned long long)inode->i_blocks);
2281                         set_sbi_flag(sbi, SBI_NEED_FSCK);
2282                         return;
2283                 }
2284                 f2fs_i_blocks_write(inode, 1, false, true);
2285         }
2286 }
2287 
2288 static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi)
2289 {
2290         return sbi->total_valid_node_count;
2291 }
2292 
2293 static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi)
2294 {
2295         percpu_counter_inc(&sbi->total_valid_inode_count);
2296 }
2297 
2298 static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi)
2299 {
2300         percpu_counter_dec(&sbi->total_valid_inode_count);
2301 }
2302 
2303 static inline s64 valid_inode_count(struct f2fs_sb_info *sbi)
2304 {
2305         return percpu_counter_sum_positive(&sbi->total_valid_inode_count);
2306 }
2307 
2308 static inline struct page *f2fs_grab_cache_page(struct address_space *mapping,
2309                                                 pgoff_t index, bool for_write)
2310 {
2311         struct page *page;
2312 
2313         if (IS_ENABLED(CONFIG_F2FS_FAULT_INJECTION)) {
2314                 if (!for_write)
2315                         page = find_get_page_flags(mapping, index,
2316                                                         FGP_LOCK | FGP_ACCESSED);
2317                 else
2318                         page = find_lock_page(mapping, index);
2319                 if (page)
2320                         return page;
2321 
2322                 if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_ALLOC)) {
2323                         f2fs_show_injection_info(F2FS_M_SB(mapping),
2324                                                         FAULT_PAGE_ALLOC);
2325                         return NULL;
2326                 }
2327         }
2328 
2329         if (!for_write)
2330                 return grab_cache_page(mapping, index);
2331         return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS);
2332 }
2333 
2334 static inline struct page *f2fs_pagecache_get_page(
2335                                 struct address_space *mapping, pgoff_t index,
2336                                 int fgp_flags, gfp_t gfp_mask)
2337 {
2338         if (time_to_inject(F2FS_M_SB(mapping), FAULT_PAGE_GET)) {
2339                 f2fs_show_injection_info(F2FS_M_SB(mapping), FAULT_PAGE_GET);
2340                 return NULL;
2341         }
2342 
2343         return pagecache_get_page(mapping, index, fgp_flags, gfp_mask);
2344 }
2345 
2346 static inline void f2fs_copy_page(struct page *src, struct page *dst)
2347 {
2348         char *src_kaddr = kmap(src);
2349         char *dst_kaddr = kmap(dst);
2350 
2351         memcpy(dst_kaddr, src_kaddr, PAGE_SIZE);
2352         kunmap(dst);
2353         kunmap(src);
2354 }
2355 
2356 static inline void f2fs_put_page(struct page *page, int unlock)
2357 {
2358         if (!page)
2359                 return;
2360 
2361         if (unlock) {
2362                 f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page));
2363                 unlock_page(page);
2364         }
2365         put_page(page);
2366 }
2367 
2368 static inline void f2fs_put_dnode(struct dnode_of_data *dn)
2369 {
2370         if (dn->node_page)
2371                 f2fs_put_page(dn->node_page, 1);
2372         if (dn->inode_page && dn->node_page != dn->inode_page)
2373                 f2fs_put_page(dn->inode_page, 0);
2374         dn->node_page = NULL;
2375         dn->inode_page = NULL;
2376 }
2377 
2378 static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name,
2379                                         size_t size)
2380 {
2381         return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL);
2382 }
2383 
2384 static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep,
2385                                                 gfp_t flags)
2386 {
2387         void *entry;
2388 
2389         entry = kmem_cache_alloc(cachep, flags);
2390         if (!entry)
2391                 entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL);
2392         return entry;
2393 }
2394 
2395 static inline bool is_idle(struct f2fs_sb_info *sbi, int type)
2396 {
2397         if (sbi->gc_mode == GC_URGENT)
2398                 return true;
2399 
2400         if (get_pages(sbi, F2FS_RD_DATA) || get_pages(sbi, F2FS_RD_NODE) ||
2401                 get_pages(sbi, F2FS_RD_META) || get_pages(sbi, F2FS_WB_DATA) ||
2402                 get_pages(sbi, F2FS_WB_CP_DATA) ||
2403                 get_pages(sbi, F2FS_DIO_READ) ||
2404                 get_pages(sbi, F2FS_DIO_WRITE))
2405                 return false;
2406 
2407         if (type != DISCARD_TIME && SM_I(sbi) && SM_I(sbi)->dcc_info &&
2408                         atomic_read(&SM_I(sbi)->dcc_info->queued_discard))
2409                 return false;
2410 
2411         if (SM_I(sbi) && SM_I(sbi)->fcc_info &&
2412                         atomic_read(&SM_I(sbi)->fcc_info->queued_flush))
2413                 return false;
2414 
2415         return f2fs_time_over(sbi, type);
2416 }
2417 
2418 static inline void f2fs_radix_tree_insert(struct radix_tree_root *root,
2419                                 unsigned long index, void *item)
2420 {
2421         while (radix_tree_insert(root, index, item))
2422                 cond_resched();
2423 }
2424 
2425 #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino)
2426 
2427 static inline bool IS_INODE(struct page *page)
2428 {
2429         struct f2fs_node *p = F2FS_NODE(page);
2430 
2431         return RAW_IS_INODE(p);
2432 }
2433 
2434 static inline int offset_in_addr(struct f2fs_inode *i)
2435 {
2436         return (i->i_inline & F2FS_EXTRA_ATTR) ?
2437                         (le16_to_cpu(i->i_extra_isize) / sizeof(__le32)) : 0;
2438 }
2439 
2440 static inline __le32 *blkaddr_in_node(struct f2fs_node *node)
2441 {
2442         return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr;
2443 }
2444 
2445 static inline int f2fs_has_extra_attr(struct inode *inode);
2446 static inline block_t data_blkaddr(struct inode *inode,
2447                         struct page *node_page, unsigned int offset)
2448 {
2449         struct f2fs_node *raw_node;
2450         __le32 *addr_array;
2451         int base = 0;
2452         bool is_inode = IS_INODE(node_page);
2453 
2454         raw_node = F2FS_NODE(node_page);
2455 
2456         if (is_inode) {
2457                 if (!inode)
2458                         /* from GC path only */
2459                         base = offset_in_addr(&raw_node->i);
2460                 else if (f2fs_has_extra_attr(inode))
2461                         base = get_extra_isize(inode);
2462         }
2463 
2464         addr_array = blkaddr_in_node(raw_node);
2465         return le32_to_cpu(addr_array[base + offset]);
2466 }
2467 
2468 static inline block_t f2fs_data_blkaddr(struct dnode_of_data *dn)
2469 {
2470         return data_blkaddr(dn->inode, dn->node_page, dn->ofs_in_node);
2471 }
2472 
2473 static inline int f2fs_test_bit(unsigned int nr, char *addr)
2474 {
2475         int mask;
2476 
2477         addr += (nr >> 3);
2478         mask = 1 << (7 - (nr & 0x07));
2479         return mask & *addr;
2480 }
2481 
2482 static inline void f2fs_set_bit(unsigned int nr, char *addr)
2483 {
2484         int mask;
2485 
2486         addr += (nr >> 3);
2487         mask = 1 << (7 - (nr & 0x07));
2488         *addr |= mask;
2489 }
2490 
2491 static inline void f2fs_clear_bit(unsigned int nr, char *addr)
2492 {
2493         int mask;
2494 
2495         addr += (nr >> 3);
2496         mask = 1 << (7 - (nr & 0x07));
2497         *addr &= ~mask;
2498 }
2499 
2500 static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr)
2501 {
2502         int mask;
2503         int ret;
2504 
2505         addr += (nr >> 3);
2506         mask = 1 << (7 - (nr & 0x07));
2507         ret = mask & *addr;
2508         *addr |= mask;
2509         return ret;
2510 }
2511 
2512 static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr)
2513 {
2514         int mask;
2515         int ret;
2516 
2517         addr += (nr >> 3);
2518         mask = 1 << (7 - (nr & 0x07));
2519         ret = mask & *addr;
2520         *addr &= ~mask;
2521         return ret;
2522 }
2523 
2524 static inline void f2fs_change_bit(unsigned int nr, char *addr)
2525 {
2526         int mask;
2527 
2528         addr += (nr >> 3);
2529         mask = 1 << (7 - (nr & 0x07));
2530         *addr ^= mask;
2531 }
2532 
2533 /*
2534  * On-disk inode flags (f2fs_inode::i_flags)
2535  */
2536 #define F2FS_COMPR_FL                   0x00000004 /* Compress file */
2537 #define F2FS_SYNC_FL                    0x00000008 /* Synchronous updates */
2538 #define F2FS_IMMUTABLE_FL               0x00000010 /* Immutable file */
2539 #define F2FS_APPEND_FL                  0x00000020 /* writes to file may only append */
2540 #define F2FS_NODUMP_FL                  0x00000040 /* do not dump file */
2541 #define F2FS_NOATIME_FL                 0x00000080 /* do not update atime */
2542 #define F2FS_NOCOMP_FL                  0x00000400 /* Don't compress */
2543 #define F2FS_INDEX_FL                   0x00001000 /* hash-indexed directory */
2544 #define F2FS_DIRSYNC_FL                 0x00010000 /* dirsync behaviour (directories only) */
2545 #define F2FS_PROJINHERIT_FL             0x20000000 /* Create with parents projid */
2546 #define F2FS_CASEFOLD_FL                0x40000000 /* Casefolded file */
2547 
2548 /* Flags that should be inherited by new inodes from their parent. */
2549 #define F2FS_FL_INHERITED (F2FS_SYNC_FL | F2FS_NODUMP_FL | F2FS_NOATIME_FL | \
2550                            F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2551                            F2FS_CASEFOLD_FL | F2FS_COMPR_FL | F2FS_NOCOMP_FL)
2552 
2553 /* Flags that are appropriate for regular files (all but dir-specific ones). */
2554 #define F2FS_REG_FLMASK         (~(F2FS_DIRSYNC_FL | F2FS_PROJINHERIT_FL | \
2555                                 F2FS_CASEFOLD_FL))
2556 
2557 /* Flags that are appropriate for non-directories/regular files. */
2558 #define F2FS_OTHER_FLMASK       (F2FS_NODUMP_FL | F2FS_NOATIME_FL)
2559 
2560 static inline __u32 f2fs_mask_flags(umode_t mode, __u32 flags)
2561 {
2562         if (S_ISDIR(mode))
2563                 return flags;
2564         else if (S_ISREG(mode))
2565                 return flags & F2FS_REG_FLMASK;
2566         else
2567                 return flags & F2FS_OTHER_FLMASK;
2568 }
2569 
2570 static inline void __mark_inode_dirty_flag(struct inode *inode,
2571                                                 int flag, bool set)
2572 {
2573         switch (flag) {
2574         case FI_INLINE_XATTR:
2575         case FI_INLINE_DATA:
2576         case FI_INLINE_DENTRY:
2577         case FI_NEW_INODE:
2578                 if (set)
2579                         return;
2580                 /* fall through */
2581         case FI_DATA_EXIST:
2582         case FI_INLINE_DOTS:
2583         case FI_PIN_FILE:
2584                 f2fs_mark_inode_dirty_sync(inode, true);
2585         }
2586 }
2587 
2588 static inline void set_inode_flag(struct inode *inode, int flag)
2589 {
2590         test_and_set_bit(flag, F2FS_I(inode)->flags);
2591         __mark_inode_dirty_flag(inode, flag, true);
2592 }
2593 
2594 static inline int is_inode_flag_set(struct inode *inode, int flag)
2595 {
2596         return test_bit(flag, F2FS_I(inode)->flags);
2597 }
2598 
2599 static inline void clear_inode_flag(struct inode *inode, int flag)
2600 {
2601         test_and_clear_bit(flag, F2FS_I(inode)->flags);
2602         __mark_inode_dirty_flag(inode, flag, false);
2603 }
2604 
2605 static inline bool f2fs_verity_in_progress(struct inode *inode)
2606 {
2607         return IS_ENABLED(CONFIG_FS_VERITY) &&
2608                is_inode_flag_set(inode, FI_VERITY_IN_PROGRESS);
2609 }
2610 
2611 static inline void set_acl_inode(struct inode *inode, umode_t mode)
2612 {
2613         F2FS_I(inode)->i_acl_mode = mode;
2614         set_inode_flag(inode, FI_ACL_MODE);
2615         f2fs_mark_inode_dirty_sync(inode, false);
2616 }
2617 
2618 static inline void f2fs_i_links_write(struct inode *inode, bool inc)
2619 {
2620         if (inc)
2621                 inc_nlink(inode);
2622         else
2623                 drop_nlink(inode);
2624         f2fs_mark_inode_dirty_sync(inode, true);
2625 }
2626 
2627 static inline void f2fs_i_blocks_write(struct inode *inode,
2628                                         block_t diff, bool add, bool claim)
2629 {
2630         bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2631         bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2632 
2633         /* add = 1, claim = 1 should be dquot_reserve_block in pair */
2634         if (add) {
2635                 if (claim)
2636                         dquot_claim_block(inode, diff);
2637                 else
2638                         dquot_alloc_block_nofail(inode, diff);
2639         } else {
2640                 dquot_free_block(inode, diff);
2641         }
2642 
2643         f2fs_mark_inode_dirty_sync(inode, true);
2644         if (clean || recover)
2645                 set_inode_flag(inode, FI_AUTO_RECOVER);
2646 }
2647 
2648 static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size)
2649 {
2650         bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE);
2651         bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER);
2652 
2653         if (i_size_read(inode) == i_size)
2654                 return;
2655 
2656         i_size_write(inode, i_size);
2657         f2fs_mark_inode_dirty_sync(inode, true);
2658         if (clean || recover)
2659                 set_inode_flag(inode, FI_AUTO_RECOVER);
2660 }
2661 
2662 static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth)
2663 {
2664         F2FS_I(inode)->i_current_depth = depth;
2665         f2fs_mark_inode_dirty_sync(inode, true);
2666 }
2667 
2668 static inline void f2fs_i_gc_failures_write(struct inode *inode,
2669                                         unsigned int count)
2670 {
2671         F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN] = count;
2672         f2fs_mark_inode_dirty_sync(inode, true);
2673 }
2674 
2675 static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid)
2676 {
2677         F2FS_I(inode)->i_xattr_nid = xnid;
2678         f2fs_mark_inode_dirty_sync(inode, true);
2679 }
2680 
2681 static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino)
2682 {
2683         F2FS_I(inode)->i_pino = pino;
2684         f2fs_mark_inode_dirty_sync(inode, true);
2685 }
2686 
2687 static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri)
2688 {
2689         struct f2fs_inode_info *fi = F2FS_I(inode);
2690 
2691         if (ri->i_inline & F2FS_INLINE_XATTR)
2692                 set_bit(FI_INLINE_XATTR, fi->flags);
2693         if (ri->i_inline & F2FS_INLINE_DATA)
2694                 set_bit(FI_INLINE_DATA, fi->flags);
2695         if (ri->i_inline & F2FS_INLINE_DENTRY)
2696                 set_bit(FI_INLINE_DENTRY, fi->flags);
2697         if (ri->i_inline & F2FS_DATA_EXIST)
2698                 set_bit(FI_DATA_EXIST, fi->flags);
2699         if (ri->i_inline & F2FS_INLINE_DOTS)
2700                 set_bit(FI_INLINE_DOTS, fi->flags);
2701         if (ri->i_inline & F2FS_EXTRA_ATTR)
2702                 set_bit(FI_EXTRA_ATTR, fi->flags);
2703         if (ri->i_inline & F2FS_PIN_FILE)
2704                 set_bit(FI_PIN_FILE, fi->flags);
2705 }
2706 
2707 static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri)
2708 {
2709         ri->i_inline = 0;
2710 
2711         if (is_inode_flag_set(inode, FI_INLINE_XATTR))
2712                 ri->i_inline |= F2FS_INLINE_XATTR;
2713         if (is_inode_flag_set(inode, FI_INLINE_DATA))
2714                 ri->i_inline |= F2FS_INLINE_DATA;
2715         if (is_inode_flag_set(inode, FI_INLINE_DENTRY))
2716                 ri->i_inline |= F2FS_INLINE_DENTRY;
2717         if (is_inode_flag_set(inode, FI_DATA_EXIST))
2718                 ri->i_inline |= F2FS_DATA_EXIST;
2719         if (is_inode_flag_set(inode, FI_INLINE_DOTS))
2720                 ri->i_inline |= F2FS_INLINE_DOTS;
2721         if (is_inode_flag_set(inode, FI_EXTRA_ATTR))
2722                 ri->i_inline |= F2FS_EXTRA_ATTR;
2723         if (is_inode_flag_set(inode, FI_PIN_FILE))
2724                 ri->i_inline |= F2FS_PIN_FILE;
2725 }
2726 
2727 static inline int f2fs_has_extra_attr(struct inode *inode)
2728 {
2729         return is_inode_flag_set(inode, FI_EXTRA_ATTR);
2730 }
2731 
2732 static inline int f2fs_has_inline_xattr(struct inode *inode)
2733 {
2734         return is_inode_flag_set(inode, FI_INLINE_XATTR);
2735 }
2736 
2737 static inline int f2fs_compressed_file(struct inode *inode)
2738 {
2739         return S_ISREG(inode->i_mode) &&
2740                 is_inode_flag_set(inode, FI_COMPRESSED_FILE);
2741 }
2742 
2743 static inline unsigned int addrs_per_inode(struct inode *inode)
2744 {
2745         unsigned int addrs = CUR_ADDRS_PER_INODE(inode) -
2746                                 get_inline_xattr_addrs(inode);
2747 
2748         if (!f2fs_compressed_file(inode))
2749                 return addrs;
2750         return ALIGN_DOWN(addrs, F2FS_I(inode)->i_cluster_size);
2751 }
2752 
2753 static inline unsigned int addrs_per_block(struct inode *inode)
2754 {
2755         if (!f2fs_compressed_file(inode))
2756                 return DEF_ADDRS_PER_BLOCK;
2757         return ALIGN_DOWN(DEF_ADDRS_PER_BLOCK, F2FS_I(inode)->i_cluster_size);
2758 }
2759 
2760 static inline void *inline_xattr_addr(struct inode *inode, struct page *page)
2761 {
2762         struct f2fs_inode *ri = F2FS_INODE(page);
2763 
2764         return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE -
2765                                         get_inline_xattr_addrs(inode)]);
2766 }
2767 
2768 static inline int inline_xattr_size(struct inode *inode)
2769 {
2770         if (f2fs_has_inline_xattr(inode))
2771                 return get_inline_xattr_addrs(inode) * sizeof(__le32);
2772         return 0;
2773 }
2774 
2775 static inline int f2fs_has_inline_data(struct inode *inode)
2776 {
2777         return is_inode_flag_set(inode, FI_INLINE_DATA);
2778 }
2779 
2780 static inline int f2fs_exist_data(struct inode *inode)
2781 {
2782         return is_inode_flag_set(inode, FI_DATA_EXIST);
2783 }
2784 
2785 static inline int f2fs_has_inline_dots(struct inode *inode)
2786 {
2787         return is_inode_flag_set(inode, FI_INLINE_DOTS);
2788 }
2789 
2790 static inline int f2fs_is_mmap_file(struct inode *inode)
2791 {
2792         return is_inode_flag_set(inode, FI_MMAP_FILE);
2793 }
2794 
2795 static inline bool f2fs_is_pinned_file(struct inode *inode)
2796 {
2797         return is_inode_flag_set(inode, FI_PIN_FILE);
2798 }
2799 
2800 static inline bool f2fs_is_atomic_file(struct inode *inode)
2801 {
2802         return is_inode_flag_set(inode, FI_ATOMIC_FILE);
2803 }
2804 
2805 static inline bool f2fs_is_commit_atomic_write(struct inode *inode)
2806 {
2807         return is_inode_flag_set(inode, FI_ATOMIC_COMMIT);
2808 }
2809 
2810 static inline bool f2fs_is_volatile_file(struct inode *inode)
2811 {
2812         return is_inode_flag_set(inode, FI_VOLATILE_FILE);
2813 }
2814 
2815 static inline bool f2fs_is_first_block_written(struct inode *inode)
2816 {
2817         return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN);
2818 }
2819 
2820 static inline bool f2fs_is_drop_cache(struct inode *inode)
2821 {
2822         return is_inode_flag_set(inode, FI_DROP_CACHE);
2823 }
2824 
2825 static inline void *inline_data_addr(struct inode *inode, struct page *page)
2826 {
2827         struct f2fs_inode *ri = F2FS_INODE(page);
2828         int extra_size = get_extra_isize(inode);
2829 
2830         return (void *)&(ri->i_addr[extra_size + DEF_INLINE_RESERVED_SIZE]);
2831 }
2832 
2833 static inline int f2fs_has_inline_dentry(struct inode *inode)
2834 {
2835         return is_inode_flag_set(inode, FI_INLINE_DENTRY);
2836 }
2837 
2838 static inline int is_file(struct inode *inode, int type)
2839 {
2840         return F2FS_I(inode)->i_advise & type;
2841 }
2842 
2843 static inline void set_file(struct inode *inode, int type)
2844 {
2845         F2FS_I(inode)->i_advise |= type;
2846         f2fs_mark_inode_dirty_sync(inode, true);
2847 }
2848 
2849 static inline void clear_file(struct inode *inode, int type)
2850 {
2851         F2FS_I(inode)->i_advise &= ~type;
2852         f2fs_mark_inode_dirty_sync(inode, true);
2853 }
2854 
2855 static inline bool f2fs_is_time_consistent(struct inode *inode)
2856 {
2857         if (!timespec64_equal(F2FS_I(inode)->i_disk_time, &inode->i_atime))
2858                 return false;
2859         if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 1, &inode->i_ctime))
2860                 return false;
2861         if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 2, &inode->i_mtime))
2862                 return false;
2863         if (!timespec64_equal(F2FS_I(inode)->i_disk_time + 3,
2864                                                 &F2FS_I(inode)->i_crtime))
2865                 return false;
2866         return true;
2867 }
2868 
2869 static inline bool f2fs_skip_inode_update(struct inode *inode, int dsync)
2870 {
2871         bool ret;
2872 
2873         if (dsync) {
2874                 struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2875 
2876                 spin_lock(&sbi->inode_lock[DIRTY_META]);
2877                 ret = list_empty(&F2FS_I(inode)->gdirty_list);
2878                 spin_unlock(&sbi->inode_lock[DIRTY_META]);
2879                 return ret;
2880         }
2881         if (!is_inode_flag_set(inode, FI_AUTO_RECOVER) ||
2882                         file_keep_isize(inode) ||
2883                         i_size_read(inode) & ~PAGE_MASK)
2884                 return false;
2885 
2886         if (!f2fs_is_time_consistent(inode))
2887                 return false;
2888 
2889         spin_lock(&F2FS_I(inode)->i_size_lock);
2890         ret = F2FS_I(inode)->last_disk_size == i_size_read(inode);
2891         spin_unlock(&F2FS_I(inode)->i_size_lock);
2892 
2893         return ret;
2894 }
2895 
2896 static inline bool f2fs_readonly(struct super_block *sb)
2897 {
2898         return sb_rdonly(sb);
2899 }
2900 
2901 static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi)
2902 {
2903         return is_set_ckpt_flags(sbi, CP_ERROR_FLAG);
2904 }
2905 
2906 static inline bool is_dot_dotdot(const struct qstr *str)
2907 {
2908         if (str->len == 1 && str->name[0] == '.')
2909                 return true;
2910 
2911         if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.')
2912                 return true;
2913 
2914         return false;
2915 }
2916 
2917 static inline bool f2fs_may_extent_tree(struct inode *inode)
2918 {
2919         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
2920 
2921         if (!test_opt(sbi, EXTENT_CACHE) ||
2922                         is_inode_flag_set(inode, FI_NO_EXTENT) ||
2923                         is_inode_flag_set(inode, FI_COMPRESSED_FILE))
2924                 return false;
2925 
2926         /*
2927          * for recovered files during mount do not create extents
2928          * if shrinker is not registered.
2929          */
2930         if (list_empty(&sbi->s_list))
2931                 return false;
2932 
2933         return S_ISREG(inode->i_mode);
2934 }
2935 
2936 static inline void *f2fs_kmalloc(struct f2fs_sb_info *sbi,
2937                                         size_t size, gfp_t flags)
2938 {
2939         if (time_to_inject(sbi, FAULT_KMALLOC)) {
2940                 f2fs_show_injection_info(sbi, FAULT_KMALLOC);
2941                 return NULL;
2942         }
2943 
2944         return kmalloc(size, flags);
2945 }
2946 
2947 static inline void *f2fs_kzalloc(struct f2fs_sb_info *sbi,
2948                                         size_t size, gfp_t flags)
2949 {
2950         return f2fs_kmalloc(sbi, size, flags | __GFP_ZERO);
2951 }
2952 
2953 static inline void *f2fs_kvmalloc(struct f2fs_sb_info *sbi,
2954                                         size_t size, gfp_t flags)
2955 {
2956         if (time_to_inject(sbi, FAULT_KVMALLOC)) {
2957                 f2fs_show_injection_info(sbi, FAULT_KVMALLOC);
2958                 return NULL;
2959         }
2960 
2961         return kvmalloc(size, flags);
2962 }
2963 
2964 static inline void *f2fs_kvzalloc(struct f2fs_sb_info *sbi,
2965                                         size_t size, gfp_t flags)
2966 {
2967         return f2fs_kvmalloc(sbi, size, flags | __GFP_ZERO);
2968 }
2969 
2970 static inline int get_extra_isize(struct inode *inode)
2971 {
2972         return F2FS_I(inode)->i_extra_isize / sizeof(__le32);
2973 }
2974 
2975 static inline int get_inline_xattr_addrs(struct inode *inode)
2976 {
2977         return F2FS_I(inode)->i_inline_xattr_size;
2978 }
2979 
2980 #define f2fs_get_inode_mode(i) \
2981         ((is_inode_flag_set(i, FI_ACL_MODE)) ? \
2982          (F2FS_I(i)->i_acl_mode) : ((i)->i_mode))
2983 
2984 #define F2FS_TOTAL_EXTRA_ATTR_SIZE                      \
2985         (offsetof(struct f2fs_inode, i_extra_end) -     \
2986         offsetof(struct f2fs_inode, i_extra_isize))     \
2987 
2988 #define F2FS_OLD_ATTRIBUTE_SIZE (offsetof(struct f2fs_inode, i_addr))
2989 #define F2FS_FITS_IN_INODE(f2fs_inode, extra_isize, field)              \
2990                 ((offsetof(typeof(*(f2fs_inode)), field) +      \
2991                 sizeof((f2fs_inode)->field))                    \
2992                 <= (F2FS_OLD_ATTRIBUTE_SIZE + (extra_isize)))   \
2993 
2994 static inline void f2fs_reset_iostat(struct f2fs_sb_info *sbi)
2995 {
2996         int i;
2997 
2998         spin_lock(&sbi->iostat_lock);
2999         for (i = 0; i < NR_IO_TYPE; i++)
3000                 sbi->write_iostat[i] = 0;
3001         spin_unlock(&sbi->iostat_lock);
3002 }
3003 
3004 static inline void f2fs_update_iostat(struct f2fs_sb_info *sbi,
3005                         enum iostat_type type, unsigned long long io_bytes)
3006 {
3007         if (!sbi->iostat_enable)
3008                 return;
3009         spin_lock(&sbi->iostat_lock);
3010         sbi->write_iostat[type] += io_bytes;
3011 
3012         if (type == APP_WRITE_IO || type == APP_DIRECT_IO)
3013                 sbi->write_iostat[APP_BUFFERED_IO] =
3014                         sbi->write_iostat[APP_WRITE_IO] -
3015                         sbi->write_iostat[APP_DIRECT_IO];
3016         spin_unlock(&sbi->iostat_lock);
3017 }
3018 
3019 #define __is_large_section(sbi)         ((sbi)->segs_per_sec > 1)
3020 
3021 #define __is_meta_io(fio) (PAGE_TYPE_OF_BIO((fio)->type) == META)
3022 
3023 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3024                                         block_t blkaddr, int type);
3025 static inline void verify_blkaddr(struct f2fs_sb_info *sbi,
3026                                         block_t blkaddr, int type)
3027 {
3028         if (!f2fs_is_valid_blkaddr(sbi, blkaddr, type)) {
3029                 f2fs_err(sbi, "invalid blkaddr: %u, type: %d, run fsck to fix.",
3030                          blkaddr, type);
3031                 f2fs_bug_on(sbi, 1);
3032         }
3033 }
3034 
3035 static inline bool __is_valid_data_blkaddr(block_t blkaddr)
3036 {
3037         if (blkaddr == NEW_ADDR || blkaddr == NULL_ADDR ||
3038                         blkaddr == COMPRESS_ADDR)
3039                 return false;
3040         return true;
3041 }
3042 
3043 static inline void f2fs_set_page_private(struct page *page,
3044                                                 unsigned long data)
3045 {
3046         if (PagePrivate(page))
3047                 return;
3048 
3049         get_page(page);
3050         SetPagePrivate(page);
3051         set_page_private(page, data);
3052 }
3053 
3054 static inline void f2fs_clear_page_private(struct page *page)
3055 {
3056         if (!PagePrivate(page))
3057                 return;
3058 
3059         set_page_private(page, 0);
3060         ClearPagePrivate(page);
3061         f2fs_put_page(page, 0);
3062 }
3063 
3064 /*
3065  * file.c
3066  */
3067 int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync);
3068 void f2fs_truncate_data_blocks(struct dnode_of_data *dn);
3069 int f2fs_truncate_blocks(struct inode *inode, u64 from, bool lock);
3070 int f2fs_truncate(struct inode *inode);
3071 int f2fs_getattr(const struct path *path, struct kstat *stat,
3072                         u32 request_mask, unsigned int flags);
3073 int f2fs_setattr(struct dentry *dentry, struct iattr *attr);
3074 int f2fs_truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end);
3075 void f2fs_truncate_data_blocks_range(struct dnode_of_data *dn, int count);
3076 int f2fs_precache_extents(struct inode *inode);
3077 long f2fs_ioctl(struct file *filp, unsigned int cmd, unsigned long arg);
3078 long f2fs_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
3079 int f2fs_transfer_project_quota(struct inode *inode, kprojid_t kprojid);
3080 int f2fs_pin_file_control(struct inode *inode, bool inc);
3081 
3082 /*
3083  * inode.c
3084  */
3085 void f2fs_set_inode_flags(struct inode *inode);
3086 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page);
3087 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page);
3088 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino);
3089 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino);
3090 int f2fs_try_to_free_nats(struct f2fs_sb_info *sbi, int nr_shrink);
3091 void f2fs_update_inode(struct inode *inode, struct page *node_page);
3092 void f2fs_update_inode_page(struct inode *inode);
3093 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc);
3094 void f2fs_evict_inode(struct inode *inode);
3095 void f2fs_handle_failed_inode(struct inode *inode);
3096 
3097 /*
3098  * namei.c
3099  */
3100 int f2fs_update_extension_list(struct f2fs_sb_info *sbi, const char *name,
3101                                                         bool hot, bool set);
3102 struct dentry *f2fs_get_parent(struct dentry *child);
3103 
3104 /*
3105  * dir.c
3106  */
3107 unsigned char f2fs_get_de_type(struct f2fs_dir_entry *de);
3108 struct f2fs_dir_entry *f2fs_find_target_dentry(struct fscrypt_name *fname,
3109                         f2fs_hash_t namehash, int *max_slots,
3110                         struct f2fs_dentry_ptr *d);
3111 int f2fs_fill_dentries(struct dir_context *ctx, struct f2fs_dentry_ptr *d,
3112                         unsigned int start_pos, struct fscrypt_str *fstr);
3113 void f2fs_do_make_empty_dir(struct inode *inode, struct inode *parent,
3114                         struct f2fs_dentry_ptr *d);
3115 struct page *f2fs_init_inode_metadata(struct inode *inode, struct inode *dir,
3116                         const struct qstr *new_name,
3117                         const struct qstr *orig_name, struct page *dpage);
3118 void f2fs_update_parent_metadata(struct inode *dir, struct inode *inode,
3119                         unsigned int current_depth);
3120 int f2fs_room_for_filename(const void *bitmap, int slots, int max_slots);
3121 void f2fs_drop_nlink(struct inode *dir, struct inode *inode);
3122 struct f2fs_dir_entry *__f2fs_find_entry(struct inode *dir,
3123                         struct fscrypt_name *fname, struct page **res_page);
3124 struct f2fs_dir_entry *f2fs_find_entry(struct inode *dir,
3125                         const struct qstr *child, struct page **res_page);
3126 struct f2fs_dir_entry *f2fs_parent_dir(struct inode *dir, struct page **p);
3127 ino_t f2fs_inode_by_name(struct inode *dir, const struct qstr *qstr,
3128                         struct page **page);
3129 void f2fs_set_link(struct inode *dir, struct f2fs_dir_entry *de,
3130                         struct page *page, struct inode *inode);
3131 bool f2fs_has_enough_room(struct inode *dir, struct page *ipage,
3132                         struct fscrypt_name *fname);
3133 void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *d,
3134                         const struct qstr *name, f2fs_hash_t name_hash,
3135                         unsigned int bit_pos);
3136 int f2fs_add_regular_entry(struct inode *dir, const struct qstr *new_name,
3137                         const struct qstr *orig_name,
3138                         struct inode *inode, nid_t ino, umode_t mode);
3139 int f2fs_add_dentry(struct inode *dir, struct fscrypt_name *fname,
3140                         struct inode *inode, nid_t ino, umode_t mode);
3141 int f2fs_do_add_link(struct inode *dir, const struct qstr *name,
3142                         struct inode *inode, nid_t ino, umode_t mode);
3143 void f2fs_delete_entry(struct f2fs_dir_entry *dentry, struct page *page,
3144                         struct inode *dir, struct inode *inode);
3145 int f2fs_do_tmpfile(struct inode *inode, struct inode *dir);
3146 bool f2fs_empty_dir(struct inode *dir);
3147 
3148 static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode)
3149 {
3150         return f2fs_do_add_link(d_inode(dentry->d_parent), &dentry->d_name,
3151                                 inode, inode->i_ino, inode->i_mode);
3152 }
3153 
3154 /*
3155  * super.c
3156  */
3157 int f2fs_inode_dirtied(struct inode *inode, bool sync);
3158 void f2fs_inode_synced(struct inode *inode);
3159 int f2fs_enable_quota_files(struct f2fs_sb_info *sbi, bool rdonly);
3160 int f2fs_quota_sync(struct super_block *sb, int type);
3161 void f2fs_quota_off_umount(struct super_block *sb);
3162 int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover);
3163 int f2fs_sync_fs(struct super_block *sb, int sync);
3164 int f2fs_sanity_check_ckpt(struct f2fs_sb_info *sbi);
3165 
3166 /*
3167  * hash.c
3168  */
3169 f2fs_hash_t f2fs_dentry_hash(const struct inode *dir,
3170                 const struct qstr *name_info, struct fscrypt_name *fname);
3171 
3172 /*
3173  * node.c
3174  */
3175 struct dnode_of_data;
3176 struct node_info;
3177 
3178 int f2fs_check_nid_range(struct f2fs_sb_info *sbi, nid_t nid);
3179 bool f2fs_available_free_memory(struct f2fs_sb_info *sbi, int type);
3180 bool f2fs_in_warm_node_list(struct f2fs_sb_info *sbi, struct page *page);
3181 void f2fs_init_fsync_node_info(struct f2fs_sb_info *sbi);
3182 void f2fs_del_fsync_node_entry(struct f2fs_sb_info *sbi, struct page *page);
3183 void f2fs_reset_fsync_node_info(struct f2fs_sb_info *sbi);
3184 int f2fs_need_dentry_mark(struct f2fs_sb_info *sbi, nid_t nid);
3185 bool f2fs_is_checkpointed_node(struct f2fs_sb_info *sbi, nid_t nid);
3186 bool f2fs_need_inode_block_update(struct f2fs_sb_info *sbi, nid_t ino);
3187 int f2fs_get_node_info(struct f2fs_sb_info *sbi, nid_t nid,
3188                                                 struct node_info *ni);
3189 pgoff_t f2fs_get_next_page_offset(struct dnode_of_data *dn, pgoff_t pgofs);
3190 int f2fs_get_dnode_of_data(struct dnode_of_data *dn, pgoff_t index, int mode);
3191 int f2fs_truncate_inode_blocks(struct inode *inode, pgoff_t from);
3192 int f2fs_truncate_xattr_node(struct inode *inode);
3193 int f2fs_wait_on_node_pages_writeback(struct f2fs_sb_info *sbi,
3194                                         unsigned int seq_id);
3195 int f2fs_remove_inode_page(struct inode *inode);
3196 struct page *f2fs_new_inode_page(struct inode *inode);
3197 struct page *f2fs_new_node_page(struct dnode_of_data *dn, unsigned int ofs);
3198 void f2fs_ra_node_page(struct f2fs_sb_info *sbi, nid_t nid);
3199 struct page *f2fs_get_node_page(struct f2fs_sb_info *sbi, pgoff_t nid);
3200 struct page *f2fs_get_node_page_ra(struct page *parent, int start);
3201 int f2fs_move_node_page(struct page *node_page, int gc_type);
3202 int f2fs_fsync_node_pages(struct f2fs_sb_info *sbi, struct inode *inode,
3203                         struct writeback_control *wbc, bool atomic,
3204                         unsigned int *seq_id);
3205 int f2fs_sync_node_pages(struct f2fs_sb_info *sbi,
3206                         struct writeback_control *wbc,
3207                         bool do_balance, enum iostat_type io_type);
3208 int f2fs_build_free_nids(struct f2fs_sb_info *sbi, bool sync, bool mount);
3209 bool f2fs_alloc_nid(struct f2fs_sb_info *sbi, nid_t *nid);
3210 void f2fs_alloc_nid_done(struct f2fs_sb_info *sbi, nid_t nid);
3211 void f2fs_alloc_nid_failed(struct f2fs_sb_info *sbi, nid_t nid);
3212 int f2fs_try_to_free_nids(struct f2fs_sb_info *sbi, int nr_shrink);
3213 void f2fs_recover_inline_xattr(struct inode *inode, struct page *page);
3214 int f2fs_recover_xattr_data(struct inode *inode, struct page *page);
3215 int f2fs_recover_inode_page(struct f2fs_sb_info *sbi, struct page *page);
3216 int f2fs_restore_node_summary(struct f2fs_sb_info *sbi,
3217                         unsigned int segno, struct f2fs_summary_block *sum);
3218 int f2fs_flush_nat_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3219 int f2fs_build_node_manager(struct f2fs_sb_info *sbi);
3220 void f2fs_destroy_node_manager(struct f2fs_sb_info *sbi);
3221 int __init f2fs_create_node_manager_caches(void);
3222 void f2fs_destroy_node_manager_caches(void);
3223 
3224 /*
3225  * segment.c
3226  */
3227 bool f2fs_need_SSR(struct f2fs_sb_info *sbi);
3228 void f2fs_register_inmem_page(struct inode *inode, struct page *page);
3229 void f2fs_drop_inmem_pages_all(struct f2fs_sb_info *sbi, bool gc_failure);
3230 void f2fs_drop_inmem_pages(struct inode *inode);
3231 void f2fs_drop_inmem_page(struct inode *inode, struct page *page);
3232 int f2fs_commit_inmem_pages(struct inode *inode);
3233 void f2fs_balance_fs(struct f2fs_sb_info *sbi, bool need);
3234 void f2fs_balance_fs_bg(struct f2fs_sb_info *sbi, bool from_bg);
3235 int f2fs_issue_flush(struct f2fs_sb_info *sbi, nid_t ino);
3236 int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi);
3237 int f2fs_flush_device_cache(struct f2fs_sb_info *sbi);
3238 void f2fs_destroy_flush_cmd_control(struct f2fs_sb_info *sbi, bool free);
3239 void f2fs_invalidate_blocks(struct f2fs_sb_info *sbi, block_t addr);
3240 bool f2fs_is_checkpointed_data(struct f2fs_sb_info *sbi, block_t blkaddr);
3241 void f2fs_drop_discard_cmd(struct f2fs_sb_info *sbi);
3242 void f2fs_stop_discard_thread(struct f2fs_sb_info *sbi);
3243 bool f2fs_issue_discard_timeout(struct f2fs_sb_info *sbi);
3244 void f2fs_clear_prefree_segments(struct f2fs_sb_info *sbi,
3245                                         struct cp_control *cpc);
3246 void f2fs_dirty_to_prefree(struct f2fs_sb_info *sbi);
3247 block_t f2fs_get_unusable_blocks(struct f2fs_sb_info *sbi);
3248 int f2fs_disable_cp_again(struct f2fs_sb_info *sbi, block_t unusable);
3249 void f2fs_release_discard_addrs(struct f2fs_sb_info *sbi);
3250 int f2fs_npages_for_summary_flush(struct f2fs_sb_info *sbi, bool for_ra);
3251 void allocate_segment_for_resize(struct f2fs_sb_info *sbi, int type,
3252                                         unsigned int start, unsigned int end);
3253 void f2fs_allocate_new_segments(struct f2fs_sb_info *sbi, int type);
3254 int f2fs_trim_fs(struct f2fs_sb_info *sbi, struct fstrim_range *range);
3255 bool f2fs_exist_trim_candidates(struct f2fs_sb_info *sbi,
3256                                         struct cp_control *cpc);
3257 struct page *f2fs_get_sum_page(struct f2fs_sb_info *sbi, unsigned int segno);
3258 void f2fs_update_meta_page(struct f2fs_sb_info *sbi, void *src,
3259                                         block_t blk_addr);
3260 void f2fs_do_write_meta_page(struct f2fs_sb_info *sbi, struct page *page,
3261                                                 enum iostat_type io_type);
3262 void f2fs_do_write_node_page(unsigned int nid, struct f2fs_io_info *fio);
3263 void f2fs_outplace_write_data(struct dnode_of_data *dn,
3264                         struct f2fs_io_info *fio);
3265 int f2fs_inplace_write_data(struct f2fs_io_info *fio);
3266 void f2fs_do_replace_block(struct f2fs_sb_info *sbi, struct f2fs_summary *sum,
3267                         block_t old_blkaddr, block_t new_blkaddr,
3268                         bool recover_curseg, bool recover_newaddr);
3269 void f2fs_replace_block(struct f2fs_sb_info *sbi, struct dnode_of_data *dn,
3270                         block_t old_addr, block_t new_addr,
3271                         unsigned char version, bool recover_curseg,
3272                         bool recover_newaddr);
3273 void f2fs_allocate_data_block(struct f2fs_sb_info *sbi, struct page *page,
3274                         block_t old_blkaddr, block_t *new_blkaddr,
3275                         struct f2fs_summary *sum, int type,
3276                         struct f2fs_io_info *fio, bool add_list);
3277 void f2fs_wait_on_page_writeback(struct page *page,
3278                         enum page_type type, bool ordered, bool locked);
3279 void f2fs_wait_on_block_writeback(struct inode *inode, block_t blkaddr);
3280 void f2fs_wait_on_block_writeback_range(struct inode *inode, block_t blkaddr,
3281                                                                 block_t len);
3282 void f2fs_write_data_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3283 void f2fs_write_node_summaries(struct f2fs_sb_info *sbi, block_t start_blk);
3284 int f2fs_lookup_journal_in_cursum(struct f2fs_journal *journal, int type,
3285                         unsigned int val, int alloc);
3286 void f2fs_flush_sit_entries(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3287 int f2fs_fix_curseg_write_pointer(struct f2fs_sb_info *sbi);
3288 int f2fs_check_write_pointer(struct f2fs_sb_info *sbi);
3289 int f2fs_build_segment_manager(struct f2fs_sb_info *sbi);
3290 void f2fs_destroy_segment_manager(struct f2fs_sb_info *sbi);
3291 int __init f2fs_create_segment_manager_caches(void);
3292 void f2fs_destroy_segment_manager_caches(void);
3293 int f2fs_rw_hint_to_seg_type(enum rw_hint hint);
3294 enum rw_hint f2fs_io_type_to_rw_hint(struct f2fs_sb_info *sbi,
3295                         enum page_type type, enum temp_type temp);
3296 
3297 /*
3298  * checkpoint.c
3299  */
3300 void f2fs_stop_checkpoint(struct f2fs_sb_info *sbi, bool end_io);
3301 struct page *f2fs_grab_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3302 struct page *f2fs_get_meta_page(struct f2fs_sb_info *sbi, pgoff_t index);
3303 struct page *f2fs_get_meta_page_nofail(struct f2fs_sb_info *sbi, pgoff_t index);
3304 struct page *f2fs_get_tmp_page(struct f2fs_sb_info *sbi, pgoff_t index);
3305 bool f2fs_is_valid_blkaddr(struct f2fs_sb_info *sbi,
3306                                         block_t blkaddr, int type);
3307 int f2fs_ra_meta_pages(struct f2fs_sb_info *sbi, block_t start, int nrpages,
3308                         int type, bool sync);
3309 void f2fs_ra_meta_pages_cond(struct f2fs_sb_info *sbi, pgoff_t index);
3310 long f2fs_sync_meta_pages(struct f2fs_sb_info *sbi, enum page_type type,
3311                         long nr_to_write, enum iostat_type io_type);
3312 void f2fs_add_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3313 void f2fs_remove_ino_entry(struct f2fs_sb_info *sbi, nid_t ino, int type);
3314 void f2fs_release_ino_entry(struct f2fs_sb_info *sbi, bool all);
3315 bool f2fs_exist_written_data(struct f2fs_sb_info *sbi, nid_t ino, int mode);
3316 void f2fs_set_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3317                                         unsigned int devidx, int type);
3318 bool f2fs_is_dirty_device(struct f2fs_sb_info *sbi, nid_t ino,
3319                                         unsigned int devidx, int type);
3320 int f2fs_sync_inode_meta(struct f2fs_sb_info *sbi);
3321 int f2fs_acquire_orphan_inode(struct f2fs_sb_info *sbi);
3322 void f2fs_release_orphan_inode(struct f2fs_sb_info *sbi);
3323 void f2fs_add_orphan_inode(struct inode *inode);
3324 void f2fs_remove_orphan_inode(struct f2fs_sb_info *sbi, nid_t ino);
3325 int f2fs_recover_orphan_inodes(struct f2fs_sb_info *sbi);
3326 int f2fs_get_valid_checkpoint(struct f2fs_sb_info *sbi);
3327 void f2fs_update_dirty_page(struct inode *inode, struct page *page);
3328 void f2fs_remove_dirty_inode(struct inode *inode);
3329 int f2fs_sync_dirty_inodes(struct f2fs_sb_info *sbi, enum inode_type type);
3330 void f2fs_wait_on_all_pages(struct f2fs_sb_info *sbi, int type);
3331 int f2fs_write_checkpoint(struct f2fs_sb_info *sbi, struct cp_control *cpc);
3332 void f2fs_init_ino_entry_info(struct f2fs_sb_info *sbi);
3333 int __init f2fs_create_checkpoint_caches(void);
3334 void f2fs_destroy_checkpoint_caches(void);
3335 
3336 /*
3337  * data.c
3338  */
3339 int __init f2fs_init_bioset(void);
3340 void f2fs_destroy_bioset(void);
3341 struct bio *f2fs_bio_alloc(struct f2fs_sb_info *sbi, int npages, bool noio);
3342 int f2fs_init_bio_entry_cache(void);
3343 void f2fs_destroy_bio_entry_cache(void);
3344 void f2fs_submit_bio(struct f2fs_sb_info *sbi,
3345                                 struct bio *bio, enum page_type type);
3346 void f2fs_submit_merged_write(struct f2fs_sb_info *sbi, enum page_type type);
3347 void f2fs_submit_merged_write_cond(struct f2fs_sb_info *sbi,
3348                                 struct inode *inode, struct page *page,
3349                                 nid_t ino, enum page_type type);
3350 void f2fs_submit_merged_ipu_write(struct f2fs_sb_info *sbi,
3351                                         struct bio **bio, struct page *page);
3352 void f2fs_flush_merged_writes(struct f2fs_sb_info *sbi);
3353 int f2fs_submit_page_bio(struct f2fs_io_info *fio);
3354 int f2fs_merge_page_bio(struct f2fs_io_info *fio);
3355 void f2fs_submit_page_write(struct f2fs_io_info *fio);
3356 struct block_device *f2fs_target_device(struct f2fs_sb_info *sbi,
3357                         block_t blk_addr, struct bio *bio);
3358 int f2fs_target_device_index(struct f2fs_sb_info *sbi, block_t blkaddr);
3359 void f2fs_set_data_blkaddr(struct dnode_of_data *dn);
3360 void f2fs_update_data_blkaddr(struct dnode_of_data *dn, block_t blkaddr);
3361 int f2fs_reserve_new_blocks(struct dnode_of_data *dn, blkcnt_t count);
3362 int f2fs_reserve_new_block(struct dnode_of_data *dn);
3363 int f2fs_get_block(struct dnode_of_data *dn, pgoff_t index);
3364 int f2fs_preallocate_blocks(struct kiocb *iocb, struct iov_iter *from);
3365 int f2fs_reserve_block(struct dnode_of_data *dn, pgoff_t index);
3366 int f2fs_mpage_readpages(struct address_space *mapping,
3367                         struct list_head *pages, struct page *page,
3368                         unsigned nr_pages, bool is_readahead);
3369 struct page *f2fs_get_read_data_page(struct inode *inode, pgoff_t index,
3370                         int op_flags, bool for_write);
3371 struct page *f2fs_find_data_page(struct inode *inode, pgoff_t index);
3372 struct page *f2fs_get_lock_data_page(struct inode *inode, pgoff_t index,
3373                         bool for_write);
3374 struct page *f2fs_get_new_data_page(struct inode *inode,
3375                         struct page *ipage, pgoff_t index, bool new_i_size);
3376 int f2fs_do_write_data_page(struct f2fs_io_info *fio);
3377 void __do_map_lock(struct f2fs_sb_info *sbi, int flag, bool lock);
3378 int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map,
3379                         int create, int flag);
3380 int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo,
3381                         u64 start, u64 len);
3382 int f2fs_encrypt_one_page(struct f2fs_io_info *fio);
3383 bool f2fs_should_update_inplace(struct inode *inode, struct f2fs_io_info *fio);
3384 bool f2fs_should_update_outplace(struct inode *inode, struct f2fs_io_info *fio);
3385 int f2fs_write_single_data_page(struct page *page, int *submitted,
3386                                 struct bio **bio, sector_t *last_block,
3387                                 struct writeback_control *wbc,
3388                                 enum iostat_type io_type,
3389                                 int compr_blocks);
3390 void f2fs_invalidate_page(struct page *page, unsigned int offset,
3391                         unsigned int length);
3392 int f2fs_release_page(struct page *page, gfp_t wait);
3393 #ifdef CONFIG_MIGRATION
3394 int f2fs_migrate_page(struct address_space *mapping, struct page *newpage,
3395                         struct page *page, enum migrate_mode mode);
3396 #endif
3397 bool f2fs_overwrite_io(struct inode *inode, loff_t pos, size_t len);
3398 void f2fs_clear_page_cache_dirty_tag(struct page *page);
3399 int f2fs_init_post_read_processing(void);
3400 void f2fs_destroy_post_read_processing(void);
3401 int f2fs_init_post_read_wq(struct f2fs_sb_info *sbi);
3402 void f2fs_destroy_post_read_wq(struct f2fs_sb_info *sbi);
3403 
3404 /*
3405  * gc.c
3406  */
3407 int f2fs_start_gc_thread(struct f2fs_sb_info *sbi);
3408 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi);
3409 block_t f2fs_start_bidx_of_node(unsigned int node_ofs, struct inode *inode);
3410 int f2fs_gc(struct f2fs_sb_info *sbi, bool sync, bool background,
3411                         unsigned int segno);
3412 void f2fs_build_gc_manager(struct f2fs_sb_info *sbi);
3413 int f2fs_resize_fs(struct f2fs_sb_info *sbi, __u64 block_count);
3414 
3415 /*
3416  * recovery.c
3417  */
3418 int f2fs_recover_fsync_data(struct f2fs_sb_info *sbi, bool check_only);
3419 bool f2fs_space_for_roll_forward(struct f2fs_sb_info *sbi);
3420 
3421 /*
3422  * debug.c
3423  */
3424 #ifdef CONFIG_F2FS_STAT_FS
3425 struct f2fs_stat_info {
3426         struct list_head stat_list;
3427         struct f2fs_sb_info *sbi;
3428         int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs;
3429         int main_area_segs, main_area_sections, main_area_zones;
3430         unsigned long long hit_largest, hit_cached, hit_rbtree;
3431         unsigned long long hit_total, total_ext;
3432         int ext_tree, zombie_tree, ext_node;
3433         int ndirty_node, ndirty_dent, ndirty_meta, ndirty_imeta;
3434         int ndirty_data, ndirty_qdata;
3435         int inmem_pages;
3436         unsigned int ndirty_dirs, ndirty_files, nquota_files, ndirty_all;
3437         int nats, dirty_nats, sits, dirty_sits;
3438         int free_nids, avail_nids, alloc_nids;
3439         int total_count, utilization;
3440         int bg_gc, nr_wb_cp_data, nr_wb_data;
3441         int nr_rd_data, nr_rd_node, nr_rd_meta;
3442         int nr_dio_read, nr_dio_write;
3443         unsigned int io_skip_bggc, other_skip_bggc;
3444         int nr_flushing, nr_flushed, flush_list_empty;
3445         int nr_discarding, nr_discarded;
3446         int nr_discard_cmd;
3447         unsigned int undiscard_blks;
3448         int inline_xattr, inline_inode, inline_dir, append, update, orphans;
3449         int compr_inode, compr_blocks;
3450         int aw_cnt, max_aw_cnt, vw_cnt, max_vw_cnt;
3451         unsigned int valid_count, valid_node_count, valid_inode_count, discard_blks;
3452         unsigned int bimodal, avg_vblocks;
3453         int util_free, util_valid, util_invalid;
3454         int rsvd_segs, overp_segs;
3455         int dirty_count, node_pages, meta_pages;
3456         int prefree_count, call_count, cp_count, bg_cp_count;
3457         int tot_segs, node_segs, data_segs, free_segs, free_secs;
3458         int bg_node_segs, bg_data_segs;
3459         int tot_blks, data_blks, node_blks;
3460         int bg_data_blks, bg_node_blks;
3461         unsigned long long skipped_atomic_files[2];
3462         int curseg[NR_CURSEG_TYPE];
3463         int cursec[NR_CURSEG_TYPE];
3464         int curzone[NR_CURSEG_TYPE];
3465 
3466         unsigned int meta_count[META_MAX];
3467         unsigned int segment_count[2];
3468         unsigned int block_count[2];
3469         unsigned int inplace_count;
3470         unsigned long long base_mem, cache_mem, page_mem;
3471 };
3472 
3473 static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi)
3474 {
3475         return (struct f2fs_stat_info *)sbi->stat_info;
3476 }
3477 
3478 #define stat_inc_cp_count(si)           ((si)->cp_count++)
3479 #define stat_inc_bg_cp_count(si)        ((si)->bg_cp_count++)
3480 #define stat_inc_call_count(si)         ((si)->call_count++)
3481 #define stat_inc_bggc_count(si)         ((si)->bg_gc++)
3482 #define stat_io_skip_bggc_count(sbi)    ((sbi)->io_skip_bggc++)
3483 #define stat_other_skip_bggc_count(sbi) ((sbi)->other_skip_bggc++)
3484 #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++)
3485 #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--)
3486 #define stat_inc_total_hit(sbi)         (atomic64_inc(&(sbi)->total_hit_ext))
3487 #define stat_inc_rbtree_node_hit(sbi)   (atomic64_inc(&(sbi)->read_hit_rbtree))
3488 #define stat_inc_largest_node_hit(sbi)  (atomic64_inc(&(sbi)->read_hit_largest))
3489 #define stat_inc_cached_node_hit(sbi)   (atomic64_inc(&(sbi)->read_hit_cached))
3490 #define stat_inc_inline_xattr(inode)                                    \
3491         do {                                                            \
3492                 if (f2fs_has_inline_xattr(inode))                       \
3493                         (atomic_inc(&F2FS_I_SB(inode)->inline_xattr));  \
3494         } while (0)
3495 #define stat_dec_inline_xattr(inode)                                    \
3496         do {                                                            \
3497                 if (f2fs_has_inline_xattr(inode))                       \
3498                         (atomic_dec(&F2FS_I_SB(inode)->inline_xattr));  \
3499         } while (0)
3500 #define stat_inc_inline_inode(inode)                                    \
3501         do {                                                            \
3502                 if (f2fs_has_inline_data(inode))                        \
3503                         (atomic_inc(&F2FS_I_SB(inode)->inline_inode));  \
3504         } while (0)
3505 #define stat_dec_inline_inode(inode)                                    \
3506         do {                                                            \
3507                 if (f2fs_has_inline_data(inode))                        \
3508                         (atomic_dec(&F2FS_I_SB(inode)->inline_inode));  \
3509         } while (0)
3510 #define stat_inc_inline_dir(inode)                                      \
3511         do {                                                            \
3512                 if (f2fs_has_inline_dentry(inode))                      \
3513                         (atomic_inc(&F2FS_I_SB(inode)->inline_dir));    \
3514         } while (0)
3515 #define stat_dec_inline_dir(inode)                                      \
3516         do {                                                            \
3517                 if (f2fs_has_inline_dentry(inode))                      \
3518                         (atomic_dec(&F2FS_I_SB(inode)->inline_dir));    \
3519         } while (0)
3520 #define stat_inc_compr_inode(inode)                                     \
3521         do {                                                            \
3522                 if (f2fs_compressed_file(inode))                        \
3523                         (atomic_inc(&F2FS_I_SB(inode)->compr_inode));   \
3524         } while (0)
3525 #define stat_dec_compr_inode(inode)                                     \
3526         do {                                                            \
3527                 if (f2fs_compressed_file(inode))                        \
3528                         (atomic_dec(&F2FS_I_SB(inode)->compr_inode));   \
3529         } while (0)
3530 #define stat_add_compr_blocks(inode, blocks)                            \
3531                 (atomic_add(blocks, &F2FS_I_SB(inode)->compr_blocks))
3532 #define stat_sub_compr_blocks(inode, blocks)                            \
3533                 (atomic_sub(blocks, &F2FS_I_SB(inode)->compr_blocks))
3534 #define stat_inc_meta_count(sbi, blkaddr)                               \
3535         do {                                                            \
3536                 if (blkaddr < SIT_I(sbi)->sit_base_addr)                \
3537                         atomic_inc(&(sbi)->meta_count[META_CP]);        \
3538                 else if (blkaddr < NM_I(sbi)->nat_blkaddr)              \
3539                         atomic_inc(&(sbi)->meta_count[META_SIT]);       \
3540                 else if (blkaddr < SM_I(sbi)->ssa_blkaddr)              \
3541                         atomic_inc(&(sbi)->meta_count[META_NAT]);       \
3542                 else if (blkaddr < SM_I(sbi)->main_blkaddr)             \
3543                         atomic_inc(&(sbi)->meta_count[META_SSA]);       \
3544         } while (0)
3545 #define stat_inc_seg_type(sbi, curseg)                                  \
3546                 ((sbi)->segment_count[(curseg)->alloc_type]++)
3547 #define stat_inc_block_count(sbi, curseg)                               \
3548                 ((sbi)->block_count[(curseg)->alloc_type]++)
3549 #define stat_inc_inplace_blocks(sbi)                                    \
3550                 (atomic_inc(&(sbi)->inplace_count))
3551 #define stat_update_max_atomic_write(inode)                             \
3552         do {                                                            \
3553                 int cur = F2FS_I_SB(inode)->atomic_files;       \
3554                 int max = atomic_read(&F2FS_I_SB(inode)->max_aw_cnt);   \
3555                 if (cur > max)                                          \
3556                         atomic_set(&F2FS_I_SB(inode)->max_aw_cnt, cur); \
3557         } while (0)
3558 #define stat_inc_volatile_write(inode)                                  \
3559                 (atomic_inc(&F2FS_I_SB(inode)->vw_cnt))
3560 #define stat_dec_volatile_write(inode)                                  \
3561                 (atomic_dec(&F2FS_I_SB(inode)->vw_cnt))
3562 #define stat_update_max_volatile_write(inode)                           \
3563         do {                                                            \
3564                 int cur = atomic_read(&F2FS_I_SB(inode)->vw_cnt);       \
3565                 int max = atomic_read(&F2FS_I_SB(inode)->max_vw_cnt);   \
3566                 if (cur > max)                                          \
3567                         atomic_set(&F2FS_I_SB(inode)->max_vw_cnt, cur); \
3568         } while (0)
3569 #define stat_inc_seg_count(sbi, type, gc_type)                          \
3570         do {                                                            \
3571                 struct f2fs_stat_info *si = F2FS_STAT(sbi);             \
3572                 si->tot_segs++;                                         \
3573                 if ((type) == SUM_TYPE_DATA) {                          \
3574                         si->data_segs++;                                \
3575                         si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \
3576                 } else {                                                \
3577                         si->node_segs++;                                \
3578                         si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \
3579                 }                                                       \
3580         } while (0)
3581 
3582 #define stat_inc_tot_blk_count(si, blks)                                \
3583         ((si)->tot_blks += (blks))
3584 
3585 #define stat_inc_data_blk_count(sbi, blks, gc_type)                     \
3586         do {                                                            \
3587                 struct f2fs_stat_info *si = F2FS_STAT(sbi);             \
3588                 stat_inc_tot_blk_count(si, blks);                       \
3589                 si->data_blks += (blks);                                \
3590                 si->bg_data_blks += ((gc_type) == BG_GC) ? (blks) : 0;  \
3591         } while (0)
3592 
3593 #define stat_inc_node_blk_count(sbi, blks, gc_type)                     \
3594         do {                                                            \
3595                 struct f2fs_stat_info *si = F2FS_STAT(sbi);             \
3596                 stat_inc_tot_blk_count(si, blks);                       \
3597                 si->node_blks += (blks);                                \
3598                 si->bg_node_blks += ((gc_type) == BG_GC) ? (blks) : 0;  \
3599         } while (0)
3600 
3601 int f2fs_build_stats(struct f2fs_sb_info *sbi);
3602 void f2fs_destroy_stats(struct f2fs_sb_info *sbi);
3603 void __init f2fs_create_root_stats(void);
3604 void f2fs_destroy_root_stats(void);
3605 void f2fs_update_sit_info(struct f2fs_sb_info *sbi);
3606 #else
3607 #define stat_inc_cp_count(si)                           do { } while (0)
3608 #define stat_inc_bg_cp_count(si)                        do { } while (0)
3609 #define stat_inc_call_count(si)                         do { } while (0)
3610 #define stat_inc_bggc_count(si)                         do { } while (0)
3611 #define stat_io_skip_bggc_count(sbi)                    do { } while (0)
3612 #define stat_other_skip_bggc_count(sbi)                 do { } while (0)
3613 #define stat_inc_dirty_inode(sbi, type)                 do { } while (0)
3614 #define stat_dec_dirty_inode(sbi, type)                 do { } while (0)
3615 #define stat_inc_total_hit(sbi)                         do { } while (0)
3616 #define stat_inc_rbtree_node_hit(sbi)                   do { } while (0)
3617 #define stat_inc_largest_node_hit(sbi)                  do { } while (0)
3618 #define stat_inc_cached_node_hit(sbi)                   do { } while (0)
3619 #define stat_inc_inline_xattr(inode)                    do { } while (0)
3620 #define stat_dec_inline_xattr(inode)                    do { } while (0)
3621 #define stat_inc_inline_inode(inode)                    do { } while (0)
3622 #define stat_dec_inline_inode(inode)                    do { } while (0)
3623 #define stat_inc_inline_dir(inode)                      do { } while (0)
3624 #define stat_dec_inline_dir(inode)                      do { } while (0)
3625 #define stat_inc_compr_inode(inode)                     do { } while (0)
3626 #define stat_dec_compr_inode(inode)                     do { } while (0)
3627 #define stat_add_compr_blocks(inode, blocks)            do { } while (0)
3628 #define stat_sub_compr_blocks(inode, blocks)            do { } while (0)
3629 #define stat_inc_atomic_write(inode)                    do { } while (0)
3630 #define stat_dec_atomic_write(inode)                    do { } while (0)
3631 #define stat_update_max_atomic_write(inode)             do { } while (0)
3632 #define stat_inc_volatile_write(inode)                  do { } while (0)
3633 #define stat_dec_volatile_write(inode)                  do { } while (0)
3634 #define stat_update_max_volatile_write(inode)           do { } while (0)
3635 #define stat_inc_meta_count(sbi, blkaddr)               do { } while (0)
3636 #define stat_inc_seg_type(sbi, curseg)                  do { } while (0)
3637 #define stat_inc_block_count(sbi, curseg)               do { } while (0)
3638 #define stat_inc_inplace_blocks(sbi)                    do { } while (0)
3639 #define stat_inc_seg_count(sbi, type, gc_type)          do { } while (0)
3640 #define stat_inc_tot_blk_count(si, blks)                do { } while (0)
3641 #define stat_inc_data_blk_count(sbi, blks, gc_type)     do { } while (0)
3642 #define stat_inc_node_blk_count(sbi, blks, gc_type)     do { } while (0)
3643 
3644 static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
3645 static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
3646 static inline void __init f2fs_create_root_stats(void) { }
3647 static inline void f2fs_destroy_root_stats(void) { }
3648 static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {}
3649 #endif
3650 
3651 extern const struct file_operations f2fs_dir_operations;
3652 #ifdef CONFIG_UNICODE
3653 extern const struct dentry_operations f2fs_dentry_ops;
3654 #endif
3655 extern const struct file_operations f2fs_file_operations;
3656 extern const struct inode_operations f2fs_file_inode_operations;
3657 extern const struct address_space_operations f2fs_dblock_aops;
3658 extern const struct address_space_operations f2fs_node_aops;
3659 extern const struct address_space_operations f2fs_meta_aops;
3660 extern const struct inode_operations f2fs_dir_inode_operations;
3661 extern const struct inode_operations f2fs_symlink_inode_operations;
3662 extern const struct inode_operations f2fs_encrypted_symlink_inode_operations;
3663 extern const struct inode_operations f2fs_special_inode_operations;
3664 extern struct kmem_cache *f2fs_inode_entry_slab;
3665 
3666 /*
3667  * inline.c
3668  */
3669 bool f2fs_may_inline_data(struct inode *inode);
3670 bool f2fs_may_inline_dentry(struct inode *inode);
3671 void f2fs_do_read_inline_data(struct page *page, struct page *ipage);
3672 void f2fs_truncate_inline_inode(struct inode *inode,
3673                                                 struct page *ipage, u64 from);
3674 int f2fs_read_inline_data(struct inode *inode, struct page *page);
3675 int f2fs_convert_inline_page(struct dnode_of_data *dn, struct page *page);
3676 int f2fs_convert_inline_inode(struct inode *inode);
3677 int f2fs_try_convert_inline_dir(struct inode *dir, struct dentry *dentry);
3678 int f2fs_write_inline_data(struct inode *inode, struct page *page);
3679 bool f2fs_recover_inline_data(struct inode *inode, struct page *npage);
3680 struct f2fs_dir_entry *f2fs_find_in_inline_dir(struct inode *dir,
3681                         struct fscrypt_name *fname, struct page **res_page);
3682 int f2fs_make_empty_inline_dir(struct inode *inode, struct inode *parent,
3683                         struct page *ipage);
3684 int f2fs_add_inline_entry(struct inode *dir, const struct qstr *new_name,
3685                         const struct qstr *orig_name,
3686                         struct inode *inode, nid_t ino, umode_t mode);
3687 void f2fs_delete_inline_entry(struct f2fs_dir_entry *dentry,
3688                                 struct page *page, struct inode *dir,
3689                                 struct inode *inode);
3690 bool f2fs_empty_inline_dir(struct inode *dir);
3691 int f2fs_read_inline_dir(struct file *file, struct dir_context *ctx,
3692                         struct fscrypt_str *fstr);
3693 int f2fs_inline_data_fiemap(struct inode *inode,
3694                         struct fiemap_extent_info *fieinfo,
3695                         __u64 start, __u64 len);
3696 
3697 /*
3698  * shrinker.c
3699  */
3700 unsigned long f2fs_shrink_count(struct shrinker *shrink,
3701                         struct shrink_control *sc);
3702 unsigned long f2fs_shrink_scan(struct shrinker *shrink,
3703                         struct shrink_control *sc);
3704 void f2fs_join_shrinker(struct f2fs_sb_info *sbi);
3705 void f2fs_leave_shrinker(struct f2fs_sb_info *sbi);
3706 
3707 /*
3708  * extent_cache.c
3709  */
3710 struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
3711                                 struct rb_entry *cached_re, unsigned int ofs);
3712 struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
3713                                 struct rb_root_cached *root,
3714                                 struct rb_node **parent,
3715                                 unsigned int ofs, bool *leftmost);
3716 struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
3717                 struct rb_entry *cached_re, unsigned int ofs,
3718                 struct rb_entry **prev_entry, struct rb_entry **next_entry,
3719                 struct rb_node ***insert_p, struct rb_node **insert_parent,
3720                 bool force, bool *leftmost);
3721 bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
3722                                                 struct rb_root_cached *root);
3723 unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
3724 bool f2fs_init_extent_tree(struct inode *inode, struct f2fs_extent *i_ext);
3725 void f2fs_drop_extent_tree(struct inode *inode);
3726 unsigned int f2fs_destroy_extent_node(struct inode *inode);
3727 void f2fs_destroy_extent_tree(struct inode *inode);
3728 bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
3729                         struct extent_info *ei);
3730 void f2fs_update_extent_cache(struct dnode_of_data *dn);
3731 void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
3732                         pgoff_t fofs, block_t blkaddr, unsigned int len);
3733 void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
3734 int __init f2fs_create_extent_cache(void);
3735 void f2fs_destroy_extent_cache(void);
3736 
3737 /*
3738  * sysfs.c
3739  */
3740 int __init f2fs_init_sysfs(void);
3741 void f2fs_exit_sysfs(void);
3742 int f2fs_register_sysfs(struct f2fs_sb_info *sbi);
3743 void f2fs_unregister_sysfs(struct f2fs_sb_info *sbi);
3744 
3745 /* verity.c */
3746 extern const struct fsverity_operations f2fs_verityops;
3747 
3748 /*
3749  * crypto support
3750  */
3751 static inline bool f2fs_encrypted_file(struct inode *inode)
3752 {
3753         return IS_ENCRYPTED(inode) && S_ISREG(inode->i_mode);
3754 }
3755 
3756 static inline void f2fs_set_encrypted_inode(struct inode *inode)
3757 {
3758 #ifdef CONFIG_FS_ENCRYPTION
3759         file_set_encrypt(inode);
3760         f2fs_set_inode_flags(inode);
3761 #endif
3762 }
3763 
3764 /*
3765  * Returns true if the reads of the inode's data need to undergo some
3766  * postprocessing step, like decryption or authenticity verification.
3767  */
3768 static inline bool f2fs_post_read_required(struct inode *inode)
3769 {
3770         return f2fs_encrypted_file(inode) || fsverity_active(inode) ||
3771                 f2fs_compressed_file(inode);
3772 }
3773 
3774 /*
3775  * compress.c
3776  */
3777 #ifdef CONFIG_F2FS_FS_COMPRESSION
3778 bool f2fs_is_compressed_page(struct page *page);
3779 struct page *f2fs_compress_control_page(struct page *page);
3780 int f2fs_prepare_compress_overwrite(struct inode *inode,
3781                         struct page **pagep, pgoff_t index, void **fsdata);
3782 bool f2fs_compress_write_end(struct inode *inode, void *fsdata,
3783                                         pgoff_t index, unsigned copied);
3784 void f2fs_compress_write_end_io(struct bio *bio, struct page *page);
3785 bool f2fs_is_compress_backend_ready(struct inode *inode);
3786 void f2fs_decompress_pages(struct bio *bio, struct page *page, bool verity);
3787 bool f2fs_cluster_is_empty(struct compress_ctx *cc);
3788 bool f2fs_cluster_can_merge_page(struct compress_ctx *cc, pgoff_t index);
3789 void f2fs_compress_ctx_add_page(struct compress_ctx *cc, struct page *page);
3790 int f2fs_write_multi_pages(struct compress_ctx *cc,
3791                                                 int *submitted,
3792                                                 struct writeback_control *wbc,
3793                                                 enum iostat_type io_type);
3794 int f2fs_is_compressed_cluster(struct inode *inode, pgoff_t index);
3795 int f2fs_read_multi_pages(struct compress_ctx *cc, struct bio **bio_ret,
3796                                 unsigned nr_pages, sector_t *last_block_in_bio,
3797                                 bool is_readahead, bool for_write);
3798 struct decompress_io_ctx *f2fs_alloc_dic(struct compress_ctx *cc);
3799 void f2fs_free_dic(struct decompress_io_ctx *dic);
3800 void f2fs_decompress_end_io(struct page **rpages,
3801                         unsigned int cluster_size, bool err, bool verity);
3802 int f2fs_init_compress_ctx(struct compress_ctx *cc);
3803 void f2fs_destroy_compress_ctx(struct compress_ctx *cc);
3804 void f2fs_init_compress_info(struct f2fs_sb_info *sbi);
3805 #else
3806 static inline bool f2fs_is_compressed_page(struct page *page) { return false; }
3807 static inline bool f2fs_is_compress_backend_ready(struct inode *inode)
3808 {
3809         if (!f2fs_compressed_file(inode))
3810                 return true;
3811         /* not support compression */
3812         return false;
3813 }
3814 static inline struct page *f2fs_compress_control_page(struct page *page)
3815 {
3816         WARN_ON_ONCE(1);
3817         return ERR_PTR(-EINVAL);
3818 }
3819 #endif
3820 
3821 static inline void set_compress_context(struct inode *inode)
3822 {
3823         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3824 
3825         F2FS_I(inode)->i_compress_algorithm =
3826                         F2FS_OPTION(sbi).compress_algorithm;
3827         F2FS_I(inode)->i_log_cluster_size =
3828                         F2FS_OPTION(sbi).compress_log_size;
3829         F2FS_I(inode)->i_cluster_size =
3830                         1 << F2FS_I(inode)->i_log_cluster_size;
3831         F2FS_I(inode)->i_flags |= F2FS_COMPR_FL;
3832         set_inode_flag(inode, FI_COMPRESSED_FILE);
3833         stat_inc_compr_inode(inode);
3834         f2fs_mark_inode_dirty_sync(inode, true);
3835 }
3836 
3837 static inline u64 f2fs_disable_compressed_file(struct inode *inode)
3838 {
3839         struct f2fs_inode_info *fi = F2FS_I(inode);
3840 
3841         if (!f2fs_compressed_file(inode))
3842                 return 0;
3843         if (S_ISREG(inode->i_mode)) {
3844                 if (get_dirty_pages(inode))
3845                         return 1;
3846                 if (fi->i_compr_blocks)
3847                         return fi->i_compr_blocks;
3848         }
3849 
3850         fi->i_flags &= ~F2FS_COMPR_FL;
3851         stat_dec_compr_inode(inode);
3852         clear_inode_flag(inode, FI_COMPRESSED_FILE);
3853         f2fs_mark_inode_dirty_sync(inode, true);
3854         return 0;
3855 }
3856 
3857 #define F2FS_FEATURE_FUNCS(name, flagname) \
3858 static inline int f2fs_sb_has_##name(struct f2fs_sb_info *sbi) \
3859 { \
3860         return F2FS_HAS_FEATURE(sbi, F2FS_FEATURE_##flagname); \
3861 }
3862 
3863 F2FS_FEATURE_FUNCS(encrypt, ENCRYPT);
3864 F2FS_FEATURE_FUNCS(blkzoned, BLKZONED);
3865 F2FS_FEATURE_FUNCS(extra_attr, EXTRA_ATTR);
3866 F2FS_FEATURE_FUNCS(project_quota, PRJQUOTA);
3867 F2FS_FEATURE_FUNCS(inode_chksum, INODE_CHKSUM);
3868 F2FS_FEATURE_FUNCS(flexible_inline_xattr, FLEXIBLE_INLINE_XATTR);
3869 F2FS_FEATURE_FUNCS(quota_ino, QUOTA_INO);
3870 F2FS_FEATURE_FUNCS(inode_crtime, INODE_CRTIME);
3871 F2FS_FEATURE_FUNCS(lost_found, LOST_FOUND);
3872 F2FS_FEATURE_FUNCS(verity, VERITY);
3873 F2FS_FEATURE_FUNCS(sb_chksum, SB_CHKSUM);
3874 F2FS_FEATURE_FUNCS(casefold, CASEFOLD);
3875 F2FS_FEATURE_FUNCS(compression, COMPRESSION);
3876 
3877 #ifdef CONFIG_BLK_DEV_ZONED
3878 static inline bool f2fs_blkz_is_seq(struct f2fs_sb_info *sbi, int devi,
3879                                     block_t blkaddr)
3880 {
3881         unsigned int zno = blkaddr >> sbi->log_blocks_per_blkz;
3882 
3883         return test_bit(zno, FDEV(devi).blkz_seq);
3884 }
3885 #endif
3886 
3887 static inline bool f2fs_hw_should_discard(struct f2fs_sb_info *sbi)
3888 {
3889         return f2fs_sb_has_blkzoned(sbi);
3890 }
3891 
3892 static inline bool f2fs_bdev_support_discard(struct block_device *bdev)
3893 {
3894         return blk_queue_discard(bdev_get_queue(bdev)) ||
3895                bdev_is_zoned(bdev);
3896 }
3897 
3898 static inline bool f2fs_hw_support_discard(struct f2fs_sb_info *sbi)
3899 {
3900         int i;
3901 
3902         if (!f2fs_is_multi_device(sbi))
3903                 return f2fs_bdev_support_discard(sbi->sb->s_bdev);
3904 
3905         for (i = 0; i < sbi->s_ndevs; i++)
3906                 if (f2fs_bdev_support_discard(FDEV(i).bdev))
3907                         return true;
3908         return false;
3909 }
3910 
3911 static inline bool f2fs_realtime_discard_enable(struct f2fs_sb_info *sbi)
3912 {
3913         return (test_opt(sbi, DISCARD) && f2fs_hw_support_discard(sbi)) ||
3914                                         f2fs_hw_should_discard(sbi);
3915 }
3916 
3917 static inline bool f2fs_hw_is_readonly(struct f2fs_sb_info *sbi)
3918 {
3919         int i;
3920 
3921         if (!f2fs_is_multi_device(sbi))
3922                 return bdev_read_only(sbi->sb->s_bdev);
3923 
3924         for (i = 0; i < sbi->s_ndevs; i++)
3925                 if (bdev_read_only(FDEV(i).bdev))
3926                         return true;
3927         return false;
3928 }
3929 
3930 static inline bool f2fs_lfs_mode(struct f2fs_sb_info *sbi)
3931 {
3932         return F2FS_OPTION(sbi).fs_mode == FS_MODE_LFS;
3933 }
3934 
3935 static inline bool f2fs_may_encrypt(struct inode *dir, struct inode *inode)
3936 {
3937 #ifdef CONFIG_FS_ENCRYPTION
3938         struct f2fs_sb_info *sbi = F2FS_I_SB(dir);
3939         umode_t mode = inode->i_mode;
3940 
3941         /*
3942          * If the directory encrypted or dummy encryption enabled,
3943          * then we should encrypt the inode.
3944          */
3945         if (IS_ENCRYPTED(dir) || DUMMY_ENCRYPTION_ENABLED(sbi))
3946                 return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode));
3947 #endif
3948         return false;
3949 }
3950 
3951 static inline bool f2fs_may_compress(struct inode *inode)
3952 {
3953         if (IS_SWAPFILE(inode) || f2fs_is_pinned_file(inode) ||
3954                                 f2fs_is_atomic_file(inode) ||
3955                                 f2fs_is_volatile_file(inode))
3956                 return false;
3957         return S_ISREG(inode->i_mode) || S_ISDIR(inode->i_mode);
3958 }
3959 
3960 static inline void f2fs_i_compr_blocks_update(struct inode *inode,
3961                                                 u64 blocks, bool add)
3962 {
3963         int diff = F2FS_I(inode)->i_cluster_size - blocks;
3964 
3965         if (add) {
3966                 F2FS_I(inode)->i_compr_blocks += diff;
3967                 stat_add_compr_blocks(inode, diff);
3968         } else {
3969                 F2FS_I(inode)->i_compr_blocks -= diff;
3970                 stat_sub_compr_blocks(inode, diff);
3971         }
3972         f2fs_mark_inode_dirty_sync(inode, true);
3973 }
3974 
3975 static inline int block_unaligned_IO(struct inode *inode,
3976                                 struct kiocb *iocb, struct iov_iter *iter)
3977 {
3978         unsigned int i_blkbits = READ_ONCE(inode->i_blkbits);
3979         unsigned int blocksize_mask = (1 << i_blkbits) - 1;
3980         loff_t offset = iocb->ki_pos;
3981         unsigned long align = offset | iov_iter_alignment(iter);
3982 
3983         return align & blocksize_mask;
3984 }
3985 
3986 static inline int allow_outplace_dio(struct inode *inode,
3987                                 struct kiocb *iocb, struct iov_iter *iter)
3988 {
3989         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
3990         int rw = iov_iter_rw(iter);
3991 
3992         return (f2fs_lfs_mode(sbi) && (rw == WRITE) &&
3993                                 !block_unaligned_IO(inode, iocb, iter));
3994 }
3995 
3996 static inline bool f2fs_force_buffered_io(struct inode *inode,
3997                                 struct kiocb *iocb, struct iov_iter *iter)
3998 {
3999         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
4000         int rw = iov_iter_rw(iter);
4001 
4002         if (f2fs_post_read_required(inode))
4003                 return true;
4004         if (f2fs_is_multi_device(sbi))
4005                 return true;
4006         if (f2fs_compressed_file(inode))
4007                 return true;
4008         /*
4009          * for blkzoned device, fallback direct IO to buffered IO, so
4010          * all IOs can be serialized by log-structured write.
4011          */
4012         if (f2fs_sb_has_blkzoned(sbi))
4013                 return true;
4014         if (f2fs_lfs_mode(sbi) && (rw == WRITE)) {
4015                 if (block_unaligned_IO(inode, iocb, iter))
4016                         return true;
4017                 if (F2FS_IO_ALIGNED(sbi))
4018                         return true;
4019         }
4020         if (is_sbi_flag_set(F2FS_I_SB(inode), SBI_CP_DISABLED) &&
4021                                         !IS_SWAPFILE(inode))
4022                 return true;
4023 
4024         return false;
4025 }
4026 
4027 #ifdef CONFIG_F2FS_FAULT_INJECTION
4028 extern void f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned int rate,
4029                                                         unsigned int type);
4030 #else
4031 #define f2fs_build_fault_attr(sbi, rate, type)          do { } while (0)
4032 #endif
4033 
4034 static inline bool is_journalled_quota(struct f2fs_sb_info *sbi)
4035 {
4036 #ifdef CONFIG_QUOTA
4037         if (f2fs_sb_has_quota_ino(sbi))
4038                 return true;
4039         if (F2FS_OPTION(sbi).s_qf_names[USRQUOTA] ||
4040                 F2FS_OPTION(sbi).s_qf_names[GRPQUOTA] ||
4041                 F2FS_OPTION(sbi).s_qf_names[PRJQUOTA])
4042                 return true;
4043 #endif
4044         return false;
4045 }
4046 
4047 #define EFSBADCRC       EBADMSG         /* Bad CRC detected */
4048 #define EFSCORRUPTED    EUCLEAN         /* Filesystem is corrupted */
4049 
4050 #endif /* _LINUX_F2FS_H */
4051 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp