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Linux/fs/f2fs/inode.c

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  1 // SPDX-License-Identifier: GPL-2.0
  2 /*
  3  * fs/f2fs/inode.c
  4  *
  5  * Copyright (c) 2012 Samsung Electronics Co., Ltd.
  6  *             http://www.samsung.com/
  7  */
  8 #include <linux/fs.h>
  9 #include <linux/f2fs_fs.h>
 10 #include <linux/buffer_head.h>
 11 #include <linux/backing-dev.h>
 12 #include <linux/writeback.h>
 13 
 14 #include "f2fs.h"
 15 #include "node.h"
 16 #include "segment.h"
 17 #include "xattr.h"
 18 
 19 #include <trace/events/f2fs.h>
 20 
 21 void f2fs_mark_inode_dirty_sync(struct inode *inode, bool sync)
 22 {
 23         if (is_inode_flag_set(inode, FI_NEW_INODE))
 24                 return;
 25 
 26         if (f2fs_inode_dirtied(inode, sync))
 27                 return;
 28 
 29         mark_inode_dirty_sync(inode);
 30 }
 31 
 32 void f2fs_set_inode_flags(struct inode *inode)
 33 {
 34         unsigned int flags = F2FS_I(inode)->i_flags;
 35         unsigned int new_fl = 0;
 36 
 37         if (flags & F2FS_SYNC_FL)
 38                 new_fl |= S_SYNC;
 39         if (flags & F2FS_APPEND_FL)
 40                 new_fl |= S_APPEND;
 41         if (flags & F2FS_IMMUTABLE_FL)
 42                 new_fl |= S_IMMUTABLE;
 43         if (flags & F2FS_NOATIME_FL)
 44                 new_fl |= S_NOATIME;
 45         if (flags & F2FS_DIRSYNC_FL)
 46                 new_fl |= S_DIRSYNC;
 47         if (file_is_encrypt(inode))
 48                 new_fl |= S_ENCRYPTED;
 49         inode_set_flags(inode, new_fl,
 50                         S_SYNC|S_APPEND|S_IMMUTABLE|S_NOATIME|S_DIRSYNC|
 51                         S_ENCRYPTED);
 52 }
 53 
 54 static void __get_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
 55 {
 56         int extra_size = get_extra_isize(inode);
 57 
 58         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
 59                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
 60                 if (ri->i_addr[extra_size])
 61                         inode->i_rdev = old_decode_dev(
 62                                 le32_to_cpu(ri->i_addr[extra_size]));
 63                 else
 64                         inode->i_rdev = new_decode_dev(
 65                                 le32_to_cpu(ri->i_addr[extra_size + 1]));
 66         }
 67 }
 68 
 69 static int __written_first_block(struct f2fs_sb_info *sbi,
 70                                         struct f2fs_inode *ri)
 71 {
 72         block_t addr = le32_to_cpu(ri->i_addr[offset_in_addr(ri)]);
 73 
 74         if (!__is_valid_data_blkaddr(addr))
 75                 return 1;
 76         if (!f2fs_is_valid_blkaddr(sbi, addr, DATA_GENERIC_ENHANCE))
 77                 return -EFSCORRUPTED;
 78         return 0;
 79 }
 80 
 81 static void __set_inode_rdev(struct inode *inode, struct f2fs_inode *ri)
 82 {
 83         int extra_size = get_extra_isize(inode);
 84 
 85         if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode)) {
 86                 if (old_valid_dev(inode->i_rdev)) {
 87                         ri->i_addr[extra_size] =
 88                                 cpu_to_le32(old_encode_dev(inode->i_rdev));
 89                         ri->i_addr[extra_size + 1] = 0;
 90                 } else {
 91                         ri->i_addr[extra_size] = 0;
 92                         ri->i_addr[extra_size + 1] =
 93                                 cpu_to_le32(new_encode_dev(inode->i_rdev));
 94                         ri->i_addr[extra_size + 2] = 0;
 95                 }
 96         }
 97 }
 98 
 99 static void __recover_inline_status(struct inode *inode, struct page *ipage)
100 {
101         void *inline_data = inline_data_addr(inode, ipage);
102         __le32 *start = inline_data;
103         __le32 *end = start + MAX_INLINE_DATA(inode) / sizeof(__le32);
104 
105         while (start < end) {
106                 if (*start++) {
107                         f2fs_wait_on_page_writeback(ipage, NODE, true, true);
108 
109                         set_inode_flag(inode, FI_DATA_EXIST);
110                         set_raw_inline(inode, F2FS_INODE(ipage));
111                         set_page_dirty(ipage);
112                         return;
113                 }
114         }
115         return;
116 }
117 
118 static bool f2fs_enable_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
119 {
120         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
121 
122         if (!f2fs_sb_has_inode_chksum(sbi))
123                 return false;
124 
125         if (!IS_INODE(page) || !(ri->i_inline & F2FS_EXTRA_ATTR))
126                 return false;
127 
128         if (!F2FS_FITS_IN_INODE(ri, le16_to_cpu(ri->i_extra_isize),
129                                 i_inode_checksum))
130                 return false;
131 
132         return true;
133 }
134 
135 static __u32 f2fs_inode_chksum(struct f2fs_sb_info *sbi, struct page *page)
136 {
137         struct f2fs_node *node = F2FS_NODE(page);
138         struct f2fs_inode *ri = &node->i;
139         __le32 ino = node->footer.ino;
140         __le32 gen = ri->i_generation;
141         __u32 chksum, chksum_seed;
142         __u32 dummy_cs = 0;
143         unsigned int offset = offsetof(struct f2fs_inode, i_inode_checksum);
144         unsigned int cs_size = sizeof(dummy_cs);
145 
146         chksum = f2fs_chksum(sbi, sbi->s_chksum_seed, (__u8 *)&ino,
147                                                         sizeof(ino));
148         chksum_seed = f2fs_chksum(sbi, chksum, (__u8 *)&gen, sizeof(gen));
149 
150         chksum = f2fs_chksum(sbi, chksum_seed, (__u8 *)ri, offset);
151         chksum = f2fs_chksum(sbi, chksum, (__u8 *)&dummy_cs, cs_size);
152         offset += cs_size;
153         chksum = f2fs_chksum(sbi, chksum, (__u8 *)ri + offset,
154                                                 F2FS_BLKSIZE - offset);
155         return chksum;
156 }
157 
158 bool f2fs_inode_chksum_verify(struct f2fs_sb_info *sbi, struct page *page)
159 {
160         struct f2fs_inode *ri;
161         __u32 provided, calculated;
162 
163         if (unlikely(is_sbi_flag_set(sbi, SBI_IS_SHUTDOWN)))
164                 return true;
165 
166 #ifdef CONFIG_F2FS_CHECK_FS
167         if (!f2fs_enable_inode_chksum(sbi, page))
168 #else
169         if (!f2fs_enable_inode_chksum(sbi, page) ||
170                         PageDirty(page) || PageWriteback(page))
171 #endif
172                 return true;
173 
174         ri = &F2FS_NODE(page)->i;
175         provided = le32_to_cpu(ri->i_inode_checksum);
176         calculated = f2fs_inode_chksum(sbi, page);
177 
178         if (provided != calculated)
179                 f2fs_warn(sbi, "checksum invalid, nid = %lu, ino_of_node = %x, %x vs. %x",
180                           page->index, ino_of_node(page), provided, calculated);
181 
182         return provided == calculated;
183 }
184 
185 void f2fs_inode_chksum_set(struct f2fs_sb_info *sbi, struct page *page)
186 {
187         struct f2fs_inode *ri = &F2FS_NODE(page)->i;
188 
189         if (!f2fs_enable_inode_chksum(sbi, page))
190                 return;
191 
192         ri->i_inode_checksum = cpu_to_le32(f2fs_inode_chksum(sbi, page));
193 }
194 
195 static bool sanity_check_inode(struct inode *inode, struct page *node_page)
196 {
197         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
198         struct f2fs_inode_info *fi = F2FS_I(inode);
199         unsigned long long iblocks;
200 
201         iblocks = le64_to_cpu(F2FS_INODE(node_page)->i_blocks);
202         if (!iblocks) {
203                 set_sbi_flag(sbi, SBI_NEED_FSCK);
204                 f2fs_warn(sbi, "%s: corrupted inode i_blocks i_ino=%lx iblocks=%llu, run fsck to fix.",
205                           __func__, inode->i_ino, iblocks);
206                 return false;
207         }
208 
209         if (ino_of_node(node_page) != nid_of_node(node_page)) {
210                 set_sbi_flag(sbi, SBI_NEED_FSCK);
211                 f2fs_warn(sbi, "%s: corrupted inode footer i_ino=%lx, ino,nid: [%u, %u] run fsck to fix.",
212                           __func__, inode->i_ino,
213                           ino_of_node(node_page), nid_of_node(node_page));
214                 return false;
215         }
216 
217         if (f2fs_sb_has_flexible_inline_xattr(sbi)
218                         && !f2fs_has_extra_attr(inode)) {
219                 set_sbi_flag(sbi, SBI_NEED_FSCK);
220                 f2fs_warn(sbi, "%s: corrupted inode ino=%lx, run fsck to fix.",
221                           __func__, inode->i_ino);
222                 return false;
223         }
224 
225         if (f2fs_has_extra_attr(inode) &&
226                         !f2fs_sb_has_extra_attr(sbi)) {
227                 set_sbi_flag(sbi, SBI_NEED_FSCK);
228                 f2fs_warn(sbi, "%s: inode (ino=%lx) is with extra_attr, but extra_attr feature is off",
229                           __func__, inode->i_ino);
230                 return false;
231         }
232 
233         if (fi->i_extra_isize > F2FS_TOTAL_EXTRA_ATTR_SIZE ||
234                         fi->i_extra_isize % sizeof(__le32)) {
235                 set_sbi_flag(sbi, SBI_NEED_FSCK);
236                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_extra_isize: %d, max: %zu",
237                           __func__, inode->i_ino, fi->i_extra_isize,
238                           F2FS_TOTAL_EXTRA_ATTR_SIZE);
239                 return false;
240         }
241 
242         if (f2fs_has_extra_attr(inode) &&
243                 f2fs_sb_has_flexible_inline_xattr(sbi) &&
244                 f2fs_has_inline_xattr(inode) &&
245                 (!fi->i_inline_xattr_size ||
246                 fi->i_inline_xattr_size > MAX_INLINE_XATTR_SIZE)) {
247                 set_sbi_flag(sbi, SBI_NEED_FSCK);
248                 f2fs_warn(sbi, "%s: inode (ino=%lx) has corrupted i_inline_xattr_size: %d, max: %zu",
249                           __func__, inode->i_ino, fi->i_inline_xattr_size,
250                           MAX_INLINE_XATTR_SIZE);
251                 return false;
252         }
253 
254         if (F2FS_I(inode)->extent_tree) {
255                 struct extent_info *ei = &F2FS_I(inode)->extent_tree->largest;
256 
257                 if (ei->len &&
258                         (!f2fs_is_valid_blkaddr(sbi, ei->blk,
259                                                 DATA_GENERIC_ENHANCE) ||
260                         !f2fs_is_valid_blkaddr(sbi, ei->blk + ei->len - 1,
261                                                 DATA_GENERIC_ENHANCE))) {
262                         set_sbi_flag(sbi, SBI_NEED_FSCK);
263                         f2fs_warn(sbi, "%s: inode (ino=%lx) extent info [%u, %u, %u] is incorrect, run fsck to fix",
264                                   __func__, inode->i_ino,
265                                   ei->blk, ei->fofs, ei->len);
266                         return false;
267                 }
268         }
269 
270         if (f2fs_has_inline_data(inode) &&
271                         (!S_ISREG(inode->i_mode) && !S_ISLNK(inode->i_mode))) {
272                 set_sbi_flag(sbi, SBI_NEED_FSCK);
273                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_data, run fsck to fix",
274                           __func__, inode->i_ino, inode->i_mode);
275                 return false;
276         }
277 
278         if (f2fs_has_inline_dentry(inode) && !S_ISDIR(inode->i_mode)) {
279                 set_sbi_flag(sbi, SBI_NEED_FSCK);
280                 f2fs_warn(sbi, "%s: inode (ino=%lx, mode=%u) should not have inline_dentry, run fsck to fix",
281                           __func__, inode->i_ino, inode->i_mode);
282                 return false;
283         }
284 
285         return true;
286 }
287 
288 static int do_read_inode(struct inode *inode)
289 {
290         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
291         struct f2fs_inode_info *fi = F2FS_I(inode);
292         struct page *node_page;
293         struct f2fs_inode *ri;
294         projid_t i_projid;
295         int err;
296 
297         /* Check if ino is within scope */
298         if (f2fs_check_nid_range(sbi, inode->i_ino))
299                 return -EINVAL;
300 
301         node_page = f2fs_get_node_page(sbi, inode->i_ino);
302         if (IS_ERR(node_page))
303                 return PTR_ERR(node_page);
304 
305         ri = F2FS_INODE(node_page);
306 
307         inode->i_mode = le16_to_cpu(ri->i_mode);
308         i_uid_write(inode, le32_to_cpu(ri->i_uid));
309         i_gid_write(inode, le32_to_cpu(ri->i_gid));
310         set_nlink(inode, le32_to_cpu(ri->i_links));
311         inode->i_size = le64_to_cpu(ri->i_size);
312         inode->i_blocks = SECTOR_FROM_BLOCK(le64_to_cpu(ri->i_blocks) - 1);
313 
314         inode->i_atime.tv_sec = le64_to_cpu(ri->i_atime);
315         inode->i_ctime.tv_sec = le64_to_cpu(ri->i_ctime);
316         inode->i_mtime.tv_sec = le64_to_cpu(ri->i_mtime);
317         inode->i_atime.tv_nsec = le32_to_cpu(ri->i_atime_nsec);
318         inode->i_ctime.tv_nsec = le32_to_cpu(ri->i_ctime_nsec);
319         inode->i_mtime.tv_nsec = le32_to_cpu(ri->i_mtime_nsec);
320         inode->i_generation = le32_to_cpu(ri->i_generation);
321         if (S_ISDIR(inode->i_mode))
322                 fi->i_current_depth = le32_to_cpu(ri->i_current_depth);
323         else if (S_ISREG(inode->i_mode))
324                 fi->i_gc_failures[GC_FAILURE_PIN] =
325                                         le16_to_cpu(ri->i_gc_failures);
326         fi->i_xattr_nid = le32_to_cpu(ri->i_xattr_nid);
327         fi->i_flags = le32_to_cpu(ri->i_flags);
328         if (S_ISREG(inode->i_mode))
329                 fi->i_flags &= ~F2FS_PROJINHERIT_FL;
330         fi->flags = 0;
331         fi->i_advise = ri->i_advise;
332         fi->i_pino = le32_to_cpu(ri->i_pino);
333         fi->i_dir_level = ri->i_dir_level;
334 
335         if (f2fs_init_extent_tree(inode, &ri->i_ext))
336                 set_page_dirty(node_page);
337 
338         get_inline_info(inode, ri);
339 
340         fi->i_extra_isize = f2fs_has_extra_attr(inode) ?
341                                         le16_to_cpu(ri->i_extra_isize) : 0;
342 
343         if (f2fs_sb_has_flexible_inline_xattr(sbi)) {
344                 fi->i_inline_xattr_size = le16_to_cpu(ri->i_inline_xattr_size);
345         } else if (f2fs_has_inline_xattr(inode) ||
346                                 f2fs_has_inline_dentry(inode)) {
347                 fi->i_inline_xattr_size = DEFAULT_INLINE_XATTR_ADDRS;
348         } else {
349 
350                 /*
351                  * Previous inline data or directory always reserved 200 bytes
352                  * in inode layout, even if inline_xattr is disabled. In order
353                  * to keep inline_dentry's structure for backward compatibility,
354                  * we get the space back only from inline_data.
355                  */
356                 fi->i_inline_xattr_size = 0;
357         }
358 
359         if (!sanity_check_inode(inode, node_page)) {
360                 f2fs_put_page(node_page, 1);
361                 return -EFSCORRUPTED;
362         }
363 
364         /* check data exist */
365         if (f2fs_has_inline_data(inode) && !f2fs_exist_data(inode))
366                 __recover_inline_status(inode, node_page);
367 
368         /* try to recover cold bit for non-dir inode */
369         if (!S_ISDIR(inode->i_mode) && !is_cold_node(node_page)) {
370                 set_cold_node(node_page, false);
371                 set_page_dirty(node_page);
372         }
373 
374         /* get rdev by using inline_info */
375         __get_inode_rdev(inode, ri);
376 
377         if (S_ISREG(inode->i_mode)) {
378                 err = __written_first_block(sbi, ri);
379                 if (err < 0) {
380                         f2fs_put_page(node_page, 1);
381                         return err;
382                 }
383                 if (!err)
384                         set_inode_flag(inode, FI_FIRST_BLOCK_WRITTEN);
385         }
386 
387         if (!f2fs_need_inode_block_update(sbi, inode->i_ino))
388                 fi->last_disk_size = inode->i_size;
389 
390         if (fi->i_flags & F2FS_PROJINHERIT_FL)
391                 set_inode_flag(inode, FI_PROJ_INHERIT);
392 
393         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_project_quota(sbi) &&
394                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_projid))
395                 i_projid = (projid_t)le32_to_cpu(ri->i_projid);
396         else
397                 i_projid = F2FS_DEF_PROJID;
398         fi->i_projid = make_kprojid(&init_user_ns, i_projid);
399 
400         if (f2fs_has_extra_attr(inode) && f2fs_sb_has_inode_crtime(sbi) &&
401                         F2FS_FITS_IN_INODE(ri, fi->i_extra_isize, i_crtime)) {
402                 fi->i_crtime.tv_sec = le64_to_cpu(ri->i_crtime);
403                 fi->i_crtime.tv_nsec = le32_to_cpu(ri->i_crtime_nsec);
404         }
405 
406         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
407         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
408         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
409         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
410         f2fs_put_page(node_page, 1);
411 
412         stat_inc_inline_xattr(inode);
413         stat_inc_inline_inode(inode);
414         stat_inc_inline_dir(inode);
415 
416         return 0;
417 }
418 
419 struct inode *f2fs_iget(struct super_block *sb, unsigned long ino)
420 {
421         struct f2fs_sb_info *sbi = F2FS_SB(sb);
422         struct inode *inode;
423         int ret = 0;
424 
425         inode = iget_locked(sb, ino);
426         if (!inode)
427                 return ERR_PTR(-ENOMEM);
428 
429         if (!(inode->i_state & I_NEW)) {
430                 trace_f2fs_iget(inode);
431                 return inode;
432         }
433         if (ino == F2FS_NODE_INO(sbi) || ino == F2FS_META_INO(sbi))
434                 goto make_now;
435 
436         ret = do_read_inode(inode);
437         if (ret)
438                 goto bad_inode;
439 make_now:
440         if (ino == F2FS_NODE_INO(sbi)) {
441                 inode->i_mapping->a_ops = &f2fs_node_aops;
442                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
443         } else if (ino == F2FS_META_INO(sbi)) {
444                 inode->i_mapping->a_ops = &f2fs_meta_aops;
445                 mapping_set_gfp_mask(inode->i_mapping, GFP_NOFS);
446         } else if (S_ISREG(inode->i_mode)) {
447                 inode->i_op = &f2fs_file_inode_operations;
448                 inode->i_fop = &f2fs_file_operations;
449                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
450         } else if (S_ISDIR(inode->i_mode)) {
451                 inode->i_op = &f2fs_dir_inode_operations;
452                 inode->i_fop = &f2fs_dir_operations;
453                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
454                 inode_nohighmem(inode);
455         } else if (S_ISLNK(inode->i_mode)) {
456                 if (file_is_encrypt(inode))
457                         inode->i_op = &f2fs_encrypted_symlink_inode_operations;
458                 else
459                         inode->i_op = &f2fs_symlink_inode_operations;
460                 inode_nohighmem(inode);
461                 inode->i_mapping->a_ops = &f2fs_dblock_aops;
462         } else if (S_ISCHR(inode->i_mode) || S_ISBLK(inode->i_mode) ||
463                         S_ISFIFO(inode->i_mode) || S_ISSOCK(inode->i_mode)) {
464                 inode->i_op = &f2fs_special_inode_operations;
465                 init_special_inode(inode, inode->i_mode, inode->i_rdev);
466         } else {
467                 ret = -EIO;
468                 goto bad_inode;
469         }
470         f2fs_set_inode_flags(inode);
471         unlock_new_inode(inode);
472         trace_f2fs_iget(inode);
473         return inode;
474 
475 bad_inode:
476         f2fs_inode_synced(inode);
477         iget_failed(inode);
478         trace_f2fs_iget_exit(inode, ret);
479         return ERR_PTR(ret);
480 }
481 
482 struct inode *f2fs_iget_retry(struct super_block *sb, unsigned long ino)
483 {
484         struct inode *inode;
485 retry:
486         inode = f2fs_iget(sb, ino);
487         if (IS_ERR(inode)) {
488                 if (PTR_ERR(inode) == -ENOMEM) {
489                         congestion_wait(BLK_RW_ASYNC, HZ/50);
490                         goto retry;
491                 }
492         }
493         return inode;
494 }
495 
496 void f2fs_update_inode(struct inode *inode, struct page *node_page)
497 {
498         struct f2fs_inode *ri;
499         struct extent_tree *et = F2FS_I(inode)->extent_tree;
500 
501         f2fs_wait_on_page_writeback(node_page, NODE, true, true);
502         set_page_dirty(node_page);
503 
504         f2fs_inode_synced(inode);
505 
506         ri = F2FS_INODE(node_page);
507 
508         ri->i_mode = cpu_to_le16(inode->i_mode);
509         ri->i_advise = F2FS_I(inode)->i_advise;
510         ri->i_uid = cpu_to_le32(i_uid_read(inode));
511         ri->i_gid = cpu_to_le32(i_gid_read(inode));
512         ri->i_links = cpu_to_le32(inode->i_nlink);
513         ri->i_size = cpu_to_le64(i_size_read(inode));
514         ri->i_blocks = cpu_to_le64(SECTOR_TO_BLOCK(inode->i_blocks) + 1);
515 
516         if (et) {
517                 read_lock(&et->lock);
518                 set_raw_extent(&et->largest, &ri->i_ext);
519                 read_unlock(&et->lock);
520         } else {
521                 memset(&ri->i_ext, 0, sizeof(ri->i_ext));
522         }
523         set_raw_inline(inode, ri);
524 
525         ri->i_atime = cpu_to_le64(inode->i_atime.tv_sec);
526         ri->i_ctime = cpu_to_le64(inode->i_ctime.tv_sec);
527         ri->i_mtime = cpu_to_le64(inode->i_mtime.tv_sec);
528         ri->i_atime_nsec = cpu_to_le32(inode->i_atime.tv_nsec);
529         ri->i_ctime_nsec = cpu_to_le32(inode->i_ctime.tv_nsec);
530         ri->i_mtime_nsec = cpu_to_le32(inode->i_mtime.tv_nsec);
531         if (S_ISDIR(inode->i_mode))
532                 ri->i_current_depth =
533                         cpu_to_le32(F2FS_I(inode)->i_current_depth);
534         else if (S_ISREG(inode->i_mode))
535                 ri->i_gc_failures =
536                         cpu_to_le16(F2FS_I(inode)->i_gc_failures[GC_FAILURE_PIN]);
537         ri->i_xattr_nid = cpu_to_le32(F2FS_I(inode)->i_xattr_nid);
538         ri->i_flags = cpu_to_le32(F2FS_I(inode)->i_flags);
539         ri->i_pino = cpu_to_le32(F2FS_I(inode)->i_pino);
540         ri->i_generation = cpu_to_le32(inode->i_generation);
541         ri->i_dir_level = F2FS_I(inode)->i_dir_level;
542 
543         if (f2fs_has_extra_attr(inode)) {
544                 ri->i_extra_isize = cpu_to_le16(F2FS_I(inode)->i_extra_isize);
545 
546                 if (f2fs_sb_has_flexible_inline_xattr(F2FS_I_SB(inode)))
547                         ri->i_inline_xattr_size =
548                                 cpu_to_le16(F2FS_I(inode)->i_inline_xattr_size);
549 
550                 if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)) &&
551                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
552                                                                 i_projid)) {
553                         projid_t i_projid;
554 
555                         i_projid = from_kprojid(&init_user_ns,
556                                                 F2FS_I(inode)->i_projid);
557                         ri->i_projid = cpu_to_le32(i_projid);
558                 }
559 
560                 if (f2fs_sb_has_inode_crtime(F2FS_I_SB(inode)) &&
561                         F2FS_FITS_IN_INODE(ri, F2FS_I(inode)->i_extra_isize,
562                                                                 i_crtime)) {
563                         ri->i_crtime =
564                                 cpu_to_le64(F2FS_I(inode)->i_crtime.tv_sec);
565                         ri->i_crtime_nsec =
566                                 cpu_to_le32(F2FS_I(inode)->i_crtime.tv_nsec);
567                 }
568         }
569 
570         __set_inode_rdev(inode, ri);
571 
572         /* deleted inode */
573         if (inode->i_nlink == 0)
574                 clear_inline_node(node_page);
575 
576         F2FS_I(inode)->i_disk_time[0] = inode->i_atime;
577         F2FS_I(inode)->i_disk_time[1] = inode->i_ctime;
578         F2FS_I(inode)->i_disk_time[2] = inode->i_mtime;
579         F2FS_I(inode)->i_disk_time[3] = F2FS_I(inode)->i_crtime;
580 
581 #ifdef CONFIG_F2FS_CHECK_FS
582         f2fs_inode_chksum_set(F2FS_I_SB(inode), node_page);
583 #endif
584 }
585 
586 void f2fs_update_inode_page(struct inode *inode)
587 {
588         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
589         struct page *node_page;
590 retry:
591         node_page = f2fs_get_node_page(sbi, inode->i_ino);
592         if (IS_ERR(node_page)) {
593                 int err = PTR_ERR(node_page);
594                 if (err == -ENOMEM) {
595                         cond_resched();
596                         goto retry;
597                 } else if (err != -ENOENT) {
598                         f2fs_stop_checkpoint(sbi, false);
599                 }
600                 return;
601         }
602         f2fs_update_inode(inode, node_page);
603         f2fs_put_page(node_page, 1);
604 }
605 
606 int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
607 {
608         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
609 
610         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
611                         inode->i_ino == F2FS_META_INO(sbi))
612                 return 0;
613 
614         if (!is_inode_flag_set(inode, FI_DIRTY_INODE))
615                 return 0;
616 
617         if (f2fs_is_checkpoint_ready(sbi))
618                 return -ENOSPC;
619 
620         /*
621          * We need to balance fs here to prevent from producing dirty node pages
622          * during the urgent cleaning time when runing out of free sections.
623          */
624         f2fs_update_inode_page(inode);
625         if (wbc && wbc->nr_to_write)
626                 f2fs_balance_fs(sbi, true);
627         return 0;
628 }
629 
630 /*
631  * Called at the last iput() if i_nlink is zero
632  */
633 void f2fs_evict_inode(struct inode *inode)
634 {
635         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
636         nid_t xnid = F2FS_I(inode)->i_xattr_nid;
637         int err = 0;
638 
639         /* some remained atomic pages should discarded */
640         if (f2fs_is_atomic_file(inode))
641                 f2fs_drop_inmem_pages(inode);
642 
643         trace_f2fs_evict_inode(inode);
644         truncate_inode_pages_final(&inode->i_data);
645 
646         if (inode->i_ino == F2FS_NODE_INO(sbi) ||
647                         inode->i_ino == F2FS_META_INO(sbi))
648                 goto out_clear;
649 
650         f2fs_bug_on(sbi, get_dirty_pages(inode));
651         f2fs_remove_dirty_inode(inode);
652 
653         f2fs_destroy_extent_tree(inode);
654 
655         if (inode->i_nlink || is_bad_inode(inode))
656                 goto no_delete;
657 
658         err = dquot_initialize(inode);
659         if (err) {
660                 err = 0;
661                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
662         }
663 
664         f2fs_remove_ino_entry(sbi, inode->i_ino, APPEND_INO);
665         f2fs_remove_ino_entry(sbi, inode->i_ino, UPDATE_INO);
666         f2fs_remove_ino_entry(sbi, inode->i_ino, FLUSH_INO);
667 
668         sb_start_intwrite(inode->i_sb);
669         set_inode_flag(inode, FI_NO_ALLOC);
670         i_size_write(inode, 0);
671 retry:
672         if (F2FS_HAS_BLOCKS(inode))
673                 err = f2fs_truncate(inode);
674 
675         if (time_to_inject(sbi, FAULT_EVICT_INODE)) {
676                 f2fs_show_injection_info(FAULT_EVICT_INODE);
677                 err = -EIO;
678         }
679 
680         if (!err) {
681                 f2fs_lock_op(sbi);
682                 err = f2fs_remove_inode_page(inode);
683                 f2fs_unlock_op(sbi);
684                 if (err == -ENOENT)
685                         err = 0;
686         }
687 
688         /* give more chances, if ENOMEM case */
689         if (err == -ENOMEM) {
690                 err = 0;
691                 goto retry;
692         }
693 
694         if (err) {
695                 f2fs_update_inode_page(inode);
696                 set_sbi_flag(sbi, SBI_QUOTA_NEED_REPAIR);
697         }
698         sb_end_intwrite(inode->i_sb);
699 no_delete:
700         dquot_drop(inode);
701 
702         stat_dec_inline_xattr(inode);
703         stat_dec_inline_dir(inode);
704         stat_dec_inline_inode(inode);
705 
706         if (likely(!is_set_ckpt_flags(sbi, CP_ERROR_FLAG) &&
707                                 !is_sbi_flag_set(sbi, SBI_CP_DISABLED)))
708                 f2fs_bug_on(sbi, is_inode_flag_set(inode, FI_DIRTY_INODE));
709         else
710                 f2fs_inode_synced(inode);
711 
712         /* ino == 0, if f2fs_new_inode() was failed t*/
713         if (inode->i_ino)
714                 invalidate_mapping_pages(NODE_MAPPING(sbi), inode->i_ino,
715                                                         inode->i_ino);
716         if (xnid)
717                 invalidate_mapping_pages(NODE_MAPPING(sbi), xnid, xnid);
718         if (inode->i_nlink) {
719                 if (is_inode_flag_set(inode, FI_APPEND_WRITE))
720                         f2fs_add_ino_entry(sbi, inode->i_ino, APPEND_INO);
721                 if (is_inode_flag_set(inode, FI_UPDATE_WRITE))
722                         f2fs_add_ino_entry(sbi, inode->i_ino, UPDATE_INO);
723         }
724         if (is_inode_flag_set(inode, FI_FREE_NID)) {
725                 f2fs_alloc_nid_failed(sbi, inode->i_ino);
726                 clear_inode_flag(inode, FI_FREE_NID);
727         } else {
728                 /*
729                  * If xattr nid is corrupted, we can reach out error condition,
730                  * err & !f2fs_exist_written_data(sbi, inode->i_ino, ORPHAN_INO)).
731                  * In that case, f2fs_check_nid_range() is enough to give a clue.
732                  */
733         }
734 out_clear:
735         fscrypt_put_encryption_info(inode);
736         clear_inode(inode);
737 }
738 
739 /* caller should call f2fs_lock_op() */
740 void f2fs_handle_failed_inode(struct inode *inode)
741 {
742         struct f2fs_sb_info *sbi = F2FS_I_SB(inode);
743         struct node_info ni;
744         int err;
745 
746         /*
747          * clear nlink of inode in order to release resource of inode
748          * immediately.
749          */
750         clear_nlink(inode);
751 
752         /*
753          * we must call this to avoid inode being remained as dirty, resulting
754          * in a panic when flushing dirty inodes in gdirty_list.
755          */
756         f2fs_update_inode_page(inode);
757         f2fs_inode_synced(inode);
758 
759         /* don't make bad inode, since it becomes a regular file. */
760         unlock_new_inode(inode);
761 
762         /*
763          * Note: we should add inode to orphan list before f2fs_unlock_op()
764          * so we can prevent losing this orphan when encoutering checkpoint
765          * and following suddenly power-off.
766          */
767         err = f2fs_get_node_info(sbi, inode->i_ino, &ni);
768         if (err) {
769                 set_sbi_flag(sbi, SBI_NEED_FSCK);
770                 f2fs_warn(sbi, "May loss orphan inode, run fsck to fix.");
771                 goto out;
772         }
773 
774         if (ni.blk_addr != NULL_ADDR) {
775                 err = f2fs_acquire_orphan_inode(sbi);
776                 if (err) {
777                         set_sbi_flag(sbi, SBI_NEED_FSCK);
778                         f2fs_warn(sbi, "Too many orphan inodes, run fsck to fix.");
779                 } else {
780                         f2fs_add_orphan_inode(inode);
781                 }
782                 f2fs_alloc_nid_done(sbi, inode->i_ino);
783         } else {
784                 set_inode_flag(inode, FI_FREE_NID);
785         }
786 
787 out:
788         f2fs_unlock_op(sbi);
789 
790         /* iput will drop the inode object */
791         iput(inode);
792 }
793 

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