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TOMOYO Linux Cross Reference
Linux/fs/gfs2/incore.h

Version: ~ [ linux-5.4.2 ] ~ [ linux-5.3.15 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.88 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.158 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.206 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.206 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.78 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ 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 /*
  2  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
  3  * Copyright (C) 2004-2008 Red Hat, Inc.  All rights reserved.
  4  *
  5  * This copyrighted material is made available to anyone wishing to use,
  6  * modify, copy, or redistribute it subject to the terms and conditions
  7  * of the GNU General Public License version 2.
  8  */
  9 
 10 #ifndef __INCORE_DOT_H__
 11 #define __INCORE_DOT_H__
 12 
 13 #include <linux/fs.h>
 14 #include <linux/kobject.h>
 15 #include <linux/workqueue.h>
 16 #include <linux/dlm.h>
 17 #include <linux/buffer_head.h>
 18 #include <linux/rcupdate.h>
 19 #include <linux/rculist_bl.h>
 20 #include <linux/completion.h>
 21 
 22 #define DIO_WAIT        0x00000010
 23 #define DIO_METADATA    0x00000020
 24 
 25 struct gfs2_log_operations;
 26 struct gfs2_log_element;
 27 struct gfs2_holder;
 28 struct gfs2_glock;
 29 struct gfs2_quota_data;
 30 struct gfs2_trans;
 31 struct gfs2_ail;
 32 struct gfs2_jdesc;
 33 struct gfs2_sbd;
 34 struct lm_lockops;
 35 
 36 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
 37 
 38 struct gfs2_log_header_host {
 39         u64 lh_sequence;        /* Sequence number of this transaction */
 40         u32 lh_flags;           /* GFS2_LOG_HEAD_... */
 41         u32 lh_tail;            /* Block number of log tail */
 42         u32 lh_blkno;
 43         u32 lh_hash;
 44 };
 45 
 46 /*
 47  * Structure of operations that are associated with each
 48  * type of element in the log.
 49  */
 50 
 51 struct gfs2_log_operations {
 52         void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
 53         void (*lo_before_commit) (struct gfs2_sbd *sdp);
 54         void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
 55         void (*lo_before_scan) (struct gfs2_jdesc *jd,
 56                                 struct gfs2_log_header_host *head, int pass);
 57         int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
 58                                  struct gfs2_log_descriptor *ld, __be64 *ptr,
 59                                  int pass);
 60         void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
 61         const char *lo_name;
 62 };
 63 
 64 struct gfs2_log_element {
 65         struct list_head le_list;
 66         const struct gfs2_log_operations *le_ops;
 67 };
 68 
 69 #define GBF_FULL 1
 70 
 71 struct gfs2_bitmap {
 72         struct buffer_head *bi_bh;
 73         char *bi_clone;
 74         unsigned long bi_flags;
 75         u32 bi_offset;
 76         u32 bi_start;
 77         u32 bi_len;
 78 };
 79 
 80 struct gfs2_rgrpd {
 81         struct list_head rd_list;       /* Link with superblock */
 82         struct list_head rd_list_mru;
 83         struct gfs2_glock *rd_gl;       /* Glock for this rgrp */
 84         u64 rd_addr;                    /* grp block disk address */
 85         u64 rd_data0;                   /* first data location */
 86         u32 rd_length;                  /* length of rgrp header in fs blocks */
 87         u32 rd_data;                    /* num of data blocks in rgrp */
 88         u32 rd_bitbytes;                /* number of bytes in data bitmaps */
 89         u32 rd_free;
 90         u32 rd_free_clone;
 91         u32 rd_dinodes;
 92         u64 rd_igeneration;
 93         struct gfs2_bitmap *rd_bits;
 94         struct mutex rd_mutex;
 95         struct gfs2_log_element rd_le;
 96         struct gfs2_sbd *rd_sbd;
 97         unsigned int rd_bh_count;
 98         u32 rd_last_alloc;
 99         u32 rd_flags;
100 #define GFS2_RDF_CHECK          0x10000000 /* check for unlinked inodes */
101 #define GFS2_RDF_UPTODATE       0x20000000 /* rg is up to date */
102 #define GFS2_RDF_ERROR          0x40000000 /* error in rg */
103 #define GFS2_RDF_MASK           0xf0000000 /* mask for internal flags */
104 };
105 
106 enum gfs2_state_bits {
107         BH_Pinned = BH_PrivateStart,
108         BH_Escaped = BH_PrivateStart + 1,
109 };
110 
111 BUFFER_FNS(Pinned, pinned)
112 TAS_BUFFER_FNS(Pinned, pinned)
113 BUFFER_FNS(Escaped, escaped)
114 TAS_BUFFER_FNS(Escaped, escaped)
115 
116 struct gfs2_bufdata {
117         struct buffer_head *bd_bh;
118         struct gfs2_glock *bd_gl;
119 
120         union {
121                 struct list_head list_tr;
122                 u64 blkno;
123         } u;
124 #define bd_list_tr u.list_tr
125 #define bd_blkno u.blkno
126 
127         struct gfs2_log_element bd_le;
128 
129         struct gfs2_ail *bd_ail;
130         struct list_head bd_ail_st_list;
131         struct list_head bd_ail_gl_list;
132 };
133 
134 /*
135  * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
136  * prefix of lock_dlm_ gets awkward.
137  */
138 
139 #define GDLM_STRNAME_BYTES      25
140 #define GDLM_LVB_SIZE           32
141 
142 enum {
143         DFL_BLOCK_LOCKS         = 0,
144 };
145 
146 struct lm_lockname {
147         u64 ln_number;
148         unsigned int ln_type;
149 };
150 
151 #define lm_name_equal(name1, name2) \
152         (((name1)->ln_number == (name2)->ln_number) && \
153          ((name1)->ln_type == (name2)->ln_type))
154 
155 
156 struct gfs2_glock_operations {
157         void (*go_xmote_th) (struct gfs2_glock *gl);
158         int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
159         void (*go_inval) (struct gfs2_glock *gl, int flags);
160         int (*go_demote_ok) (const struct gfs2_glock *gl);
161         int (*go_lock) (struct gfs2_holder *gh);
162         void (*go_unlock) (struct gfs2_holder *gh);
163         int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
164         void (*go_callback) (struct gfs2_glock *gl);
165         const int go_type;
166         const unsigned long go_min_hold_time;
167         const unsigned long go_flags;
168 #define GLOF_ASPACE 1
169 };
170 
171 enum {
172         /* States */
173         HIF_HOLDER              = 6,  /* Set for gh that "holds" the glock */
174         HIF_FIRST               = 7,
175         HIF_WAIT                = 10,
176 };
177 
178 struct gfs2_holder {
179         struct list_head gh_list;
180 
181         struct gfs2_glock *gh_gl;
182         struct pid *gh_owner_pid;
183         unsigned int gh_state;
184         unsigned gh_flags;
185 
186         int gh_error;
187         unsigned long gh_iflags; /* HIF_... */
188         unsigned long gh_ip;
189 };
190 
191 enum {
192         GLF_LOCK                        = 1,
193         GLF_DEMOTE                      = 3,
194         GLF_PENDING_DEMOTE              = 4,
195         GLF_DEMOTE_IN_PROGRESS          = 5,
196         GLF_DIRTY                       = 6,
197         GLF_LFLUSH                      = 7,
198         GLF_INVALIDATE_IN_PROGRESS      = 8,
199         GLF_REPLY_PENDING               = 9,
200         GLF_INITIAL                     = 10,
201         GLF_FROZEN                      = 11,
202         GLF_QUEUED                      = 12,
203         GLF_LRU                         = 13,
204         GLF_OBJECT                      = 14, /* Used only for tracing */
205 };
206 
207 struct gfs2_glock {
208         struct hlist_bl_node gl_list;
209         unsigned long gl_flags;         /* GLF_... */
210         struct lm_lockname gl_name;
211         atomic_t gl_ref;
212 
213         spinlock_t gl_spin;
214 
215         /* State fields protected by gl_spin */
216         unsigned int gl_state:2,        /* Current state */
217                      gl_target:2,       /* Target state */
218                      gl_demote_state:2, /* State requested by remote node */
219                      gl_req:2,          /* State in last dlm request */
220                      gl_reply:8;        /* Last reply from the dlm */
221 
222         unsigned int gl_hash;
223         unsigned long gl_demote_time; /* time of first demote request */
224         struct list_head gl_holders;
225 
226         const struct gfs2_glock_operations *gl_ops;
227         char gl_strname[GDLM_STRNAME_BYTES];
228         struct dlm_lksb gl_lksb;
229         char gl_lvb[32];
230         unsigned long gl_tchange;
231         void *gl_object;
232 
233         struct list_head gl_lru;
234 
235         struct gfs2_sbd *gl_sbd;
236 
237         struct list_head gl_ail_list;
238         atomic_t gl_ail_count;
239         atomic_t gl_revokes;
240         struct delayed_work gl_work;
241         struct work_struct gl_delete;
242         struct rcu_head gl_rcu;
243 };
244 
245 #define GFS2_MIN_LVB_SIZE 32    /* Min size of LVB that gfs2 supports */
246 
247 struct gfs2_alloc {
248         /* Quota stuff */
249 
250         struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
251         struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
252         unsigned int al_qd_num;
253 
254         u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
255         u32 al_alloced; /* Filled in by gfs2_alloc_*() */
256 
257         /* Filled in by gfs2_inplace_reserve() */
258 
259         unsigned int al_line;
260         char *al_file;
261         struct gfs2_holder al_ri_gh;
262         struct gfs2_holder al_rgd_gh;
263         struct gfs2_rgrpd *al_rgd;
264 
265 };
266 
267 enum {
268         GIF_INVALID             = 0,
269         GIF_QD_LOCKED           = 1,
270         GIF_SW_PAGED            = 3,
271 };
272 
273 
274 struct gfs2_inode {
275         struct inode i_inode;
276         u64 i_no_addr;
277         u64 i_no_formal_ino;
278         u64 i_generation;
279         u64 i_eattr;
280         unsigned long i_flags;          /* GIF_... */
281         struct gfs2_glock *i_gl; /* Move into i_gh? */
282         struct gfs2_holder i_iopen_gh;
283         struct gfs2_holder i_gh; /* for prepare/commit_write only */
284         struct gfs2_alloc *i_alloc;
285         u64 i_goal;     /* goal block for allocations */
286         struct rw_semaphore i_rw_mutex;
287         struct list_head i_trunc_list;
288         u32 i_entries;
289         u32 i_diskflags;
290         u8 i_height;
291         u8 i_depth;
292 };
293 
294 /*
295  * Since i_inode is the first element of struct gfs2_inode,
296  * this is effectively a cast.
297  */
298 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
299 {
300         return container_of(inode, struct gfs2_inode, i_inode);
301 }
302 
303 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
304 {
305         return inode->i_sb->s_fs_info;
306 }
307 
308 struct gfs2_file {
309         struct mutex f_fl_mutex;
310         struct gfs2_holder f_fl_gh;
311 };
312 
313 struct gfs2_revoke_replay {
314         struct list_head rr_list;
315         u64 rr_blkno;
316         unsigned int rr_where;
317 };
318 
319 enum {
320         QDF_USER                = 0,
321         QDF_CHANGE              = 1,
322         QDF_LOCKED              = 2,
323         QDF_REFRESH             = 3,
324 };
325 
326 struct gfs2_quota_data {
327         struct list_head qd_list;
328         struct list_head qd_reclaim;
329 
330         atomic_t qd_count;
331 
332         u32 qd_id;
333         unsigned long qd_flags;         /* QDF_... */
334 
335         s64 qd_change;
336         s64 qd_change_sync;
337 
338         unsigned int qd_slot;
339         unsigned int qd_slot_count;
340 
341         struct buffer_head *qd_bh;
342         struct gfs2_quota_change *qd_bh_qc;
343         unsigned int qd_bh_count;
344 
345         struct gfs2_glock *qd_gl;
346         struct gfs2_quota_lvb qd_qb;
347 
348         u64 qd_sync_gen;
349         unsigned long qd_last_warn;
350 };
351 
352 struct gfs2_trans {
353         unsigned long tr_ip;
354 
355         unsigned int tr_blocks;
356         unsigned int tr_revokes;
357         unsigned int tr_reserved;
358 
359         struct gfs2_holder tr_t_gh;
360 
361         int tr_touched;
362 
363         unsigned int tr_num_buf;
364         unsigned int tr_num_buf_new;
365         unsigned int tr_num_databuf_new;
366         unsigned int tr_num_buf_rm;
367         unsigned int tr_num_databuf_rm;
368         struct list_head tr_list_buf;
369 
370         unsigned int tr_num_revoke;
371         unsigned int tr_num_revoke_rm;
372 };
373 
374 struct gfs2_ail {
375         struct list_head ai_list;
376 
377         unsigned int ai_first;
378         struct list_head ai_ail1_list;
379         struct list_head ai_ail2_list;
380 };
381 
382 struct gfs2_journal_extent {
383         struct list_head extent_list;
384 
385         unsigned int lblock; /* First logical block */
386         u64 dblock; /* First disk block */
387         u64 blocks;
388 };
389 
390 struct gfs2_jdesc {
391         struct list_head jd_list;
392         struct list_head extent_list;
393         struct work_struct jd_work;
394         struct inode *jd_inode;
395         unsigned long jd_flags;
396 #define JDF_RECOVERY 1
397         unsigned int jd_jid;
398         unsigned int jd_blocks;
399 };
400 
401 struct gfs2_statfs_change_host {
402         s64 sc_total;
403         s64 sc_free;
404         s64 sc_dinodes;
405 };
406 
407 #define GFS2_QUOTA_DEFAULT      GFS2_QUOTA_OFF
408 #define GFS2_QUOTA_OFF          0
409 #define GFS2_QUOTA_ACCOUNT      1
410 #define GFS2_QUOTA_ON           2
411 
412 #define GFS2_DATA_DEFAULT       GFS2_DATA_ORDERED
413 #define GFS2_DATA_WRITEBACK     1
414 #define GFS2_DATA_ORDERED       2
415 
416 #define GFS2_ERRORS_DEFAULT     GFS2_ERRORS_WITHDRAW
417 #define GFS2_ERRORS_WITHDRAW    0
418 #define GFS2_ERRORS_CONTINUE    1 /* place holder for future feature */
419 #define GFS2_ERRORS_RO          2 /* place holder for future feature */
420 #define GFS2_ERRORS_PANIC       3
421 
422 struct gfs2_args {
423         char ar_lockproto[GFS2_LOCKNAME_LEN];   /* Name of the Lock Protocol */
424         char ar_locktable[GFS2_LOCKNAME_LEN];   /* Name of the Lock Table */
425         char ar_hostdata[GFS2_LOCKNAME_LEN];    /* Host specific data */
426         unsigned int ar_spectator:1;            /* Don't get a journal */
427         unsigned int ar_localflocks:1;          /* Let the VFS do flock|fcntl */
428         unsigned int ar_debug:1;                /* Oops on errors */
429         unsigned int ar_posix_acl:1;            /* Enable posix acls */
430         unsigned int ar_quota:2;                /* off/account/on */
431         unsigned int ar_suiddir:1;              /* suiddir support */
432         unsigned int ar_data:2;                 /* ordered/writeback */
433         unsigned int ar_meta:1;                 /* mount metafs */
434         unsigned int ar_discard:1;              /* discard requests */
435         unsigned int ar_errors:2;               /* errors=withdraw | panic */
436         unsigned int ar_nobarrier:1;            /* do not send barriers */
437         int ar_commit;                          /* Commit interval */
438         int ar_statfs_quantum;                  /* The fast statfs interval */
439         int ar_quota_quantum;                   /* The quota interval */
440         int ar_statfs_percent;                  /* The % change to force sync */
441 };
442 
443 struct gfs2_tune {
444         spinlock_t gt_spin;
445 
446         unsigned int gt_logd_secs;
447 
448         unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
449         unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
450         unsigned int gt_quota_scale_num; /* Numerator */
451         unsigned int gt_quota_scale_den; /* Denominator */
452         unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
453         unsigned int gt_new_files_jdata;
454         unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
455         unsigned int gt_complain_secs;
456         unsigned int gt_statfs_quantum;
457         unsigned int gt_statfs_slow;
458 };
459 
460 enum {
461         SDF_JOURNAL_CHECKED     = 0,
462         SDF_JOURNAL_LIVE        = 1,
463         SDF_SHUTDOWN            = 2,
464         SDF_NOBARRIERS          = 3,
465         SDF_NORECOVERY          = 4,
466         SDF_DEMOTE              = 5,
467         SDF_NOJOURNALID         = 6,
468 };
469 
470 #define GFS2_FSNAME_LEN         256
471 
472 struct gfs2_inum_host {
473         u64 no_formal_ino;
474         u64 no_addr;
475 };
476 
477 struct gfs2_sb_host {
478         u32 sb_magic;
479         u32 sb_type;
480         u32 sb_format;
481 
482         u32 sb_fs_format;
483         u32 sb_multihost_format;
484         u32 sb_bsize;
485         u32 sb_bsize_shift;
486 
487         struct gfs2_inum_host sb_master_dir;
488         struct gfs2_inum_host sb_root_dir;
489 
490         char sb_lockproto[GFS2_LOCKNAME_LEN];
491         char sb_locktable[GFS2_LOCKNAME_LEN];
492 };
493 
494 /*
495  * lm_mount() return values
496  *
497  * ls_jid - the journal ID this node should use
498  * ls_first - this node is the first to mount the file system
499  * ls_lockspace - lock module's context for this file system
500  * ls_ops - lock module's functions
501  */
502 
503 struct lm_lockstruct {
504         int ls_jid;
505         unsigned int ls_first;
506         unsigned int ls_first_done;
507         unsigned int ls_nodir;
508         const struct lm_lockops *ls_ops;
509         unsigned long ls_flags;
510         dlm_lockspace_t *ls_dlm;
511 
512         int ls_recover_jid_done;
513         int ls_recover_jid_status;
514 };
515 
516 struct gfs2_sbd {
517         struct super_block *sd_vfs;
518         struct kobject sd_kobj;
519         unsigned long sd_flags; /* SDF_... */
520         struct gfs2_sb_host sd_sb;
521 
522         /* Constants computed on mount */
523 
524         u32 sd_fsb2bb;
525         u32 sd_fsb2bb_shift;
526         u32 sd_diptrs;  /* Number of pointers in a dinode */
527         u32 sd_inptrs;  /* Number of pointers in a indirect block */
528         u32 sd_jbsize;  /* Size of a journaled data block */
529         u32 sd_hash_bsize;      /* sizeof(exhash block) */
530         u32 sd_hash_bsize_shift;
531         u32 sd_hash_ptrs;       /* Number of pointers in a hash block */
532         u32 sd_qc_per_block;
533         u32 sd_max_dirres;      /* Max blocks needed to add a directory entry */
534         u32 sd_max_height;      /* Max height of a file's metadata tree */
535         u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
536         u32 sd_max_jheight; /* Max height of journaled file's meta tree */
537         u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
538 
539         struct gfs2_args sd_args;       /* Mount arguments */
540         struct gfs2_tune sd_tune;       /* Filesystem tuning structure */
541 
542         /* Lock Stuff */
543 
544         struct lm_lockstruct sd_lockstruct;
545         struct gfs2_holder sd_live_gh;
546         struct gfs2_glock *sd_rename_gl;
547         struct gfs2_glock *sd_trans_gl;
548         wait_queue_head_t sd_glock_wait;
549         atomic_t sd_glock_disposal;
550         struct completion sd_locking_init;
551 
552         /* Inode Stuff */
553 
554         struct dentry *sd_master_dir;
555         struct dentry *sd_root_dir;
556 
557         struct inode *sd_jindex;
558         struct inode *sd_statfs_inode;
559         struct inode *sd_sc_inode;
560         struct inode *sd_qc_inode;
561         struct inode *sd_rindex;
562         struct inode *sd_quota_inode;
563 
564         /* StatFS stuff */
565 
566         spinlock_t sd_statfs_spin;
567         struct gfs2_statfs_change_host sd_statfs_master;
568         struct gfs2_statfs_change_host sd_statfs_local;
569         int sd_statfs_force_sync;
570 
571         /* Resource group stuff */
572 
573         int sd_rindex_uptodate;
574         spinlock_t sd_rindex_spin;
575         struct mutex sd_rindex_mutex;
576         struct list_head sd_rindex_list;
577         struct list_head sd_rindex_mru_list;
578         struct gfs2_rgrpd *sd_rindex_forward;
579         unsigned int sd_rgrps;
580         unsigned int sd_max_rg_data;
581 
582         /* Journal index stuff */
583 
584         struct list_head sd_jindex_list;
585         spinlock_t sd_jindex_spin;
586         struct mutex sd_jindex_mutex;
587         unsigned int sd_journals;
588 
589         struct gfs2_jdesc *sd_jdesc;
590         struct gfs2_holder sd_journal_gh;
591         struct gfs2_holder sd_jinode_gh;
592 
593         struct gfs2_holder sd_sc_gh;
594         struct gfs2_holder sd_qc_gh;
595 
596         /* Daemon stuff */
597 
598         struct task_struct *sd_logd_process;
599         struct task_struct *sd_quotad_process;
600 
601         /* Quota stuff */
602 
603         struct list_head sd_quota_list;
604         atomic_t sd_quota_count;
605         struct mutex sd_quota_mutex;
606         wait_queue_head_t sd_quota_wait;
607         struct list_head sd_trunc_list;
608         spinlock_t sd_trunc_lock;
609 
610         unsigned int sd_quota_slots;
611         unsigned int sd_quota_chunks;
612         unsigned char **sd_quota_bitmap;
613 
614         u64 sd_quota_sync_gen;
615 
616         /* Log stuff */
617 
618         spinlock_t sd_log_lock;
619 
620         unsigned int sd_log_blks_reserved;
621         unsigned int sd_log_commited_buf;
622         unsigned int sd_log_commited_databuf;
623         int sd_log_commited_revoke;
624 
625         atomic_t sd_log_pinned;
626         unsigned int sd_log_num_buf;
627         unsigned int sd_log_num_revoke;
628         unsigned int sd_log_num_rg;
629         unsigned int sd_log_num_databuf;
630 
631         struct list_head sd_log_le_buf;
632         struct list_head sd_log_le_revoke;
633         struct list_head sd_log_le_rg;
634         struct list_head sd_log_le_databuf;
635         struct list_head sd_log_le_ordered;
636 
637         atomic_t sd_log_thresh1;
638         atomic_t sd_log_thresh2;
639         atomic_t sd_log_blks_free;
640         wait_queue_head_t sd_log_waitq;
641         wait_queue_head_t sd_logd_waitq;
642 
643         u64 sd_log_sequence;
644         unsigned int sd_log_head;
645         unsigned int sd_log_tail;
646         int sd_log_idle;
647 
648         struct rw_semaphore sd_log_flush_lock;
649         atomic_t sd_log_in_flight;
650         wait_queue_head_t sd_log_flush_wait;
651 
652         unsigned int sd_log_flush_head;
653         u64 sd_log_flush_wrapped;
654 
655         spinlock_t sd_ail_lock;
656         struct list_head sd_ail1_list;
657         struct list_head sd_ail2_list;
658 
659         /* Replay stuff */
660 
661         struct list_head sd_revoke_list;
662         unsigned int sd_replay_tail;
663 
664         unsigned int sd_found_blocks;
665         unsigned int sd_found_revokes;
666         unsigned int sd_replayed_blocks;
667 
668         /* For quiescing the filesystem */
669 
670         struct gfs2_holder sd_freeze_gh;
671         struct mutex sd_freeze_lock;
672         unsigned int sd_freeze_count;
673 
674         char sd_fsname[GFS2_FSNAME_LEN];
675         char sd_table_name[GFS2_FSNAME_LEN];
676         char sd_proto_name[GFS2_FSNAME_LEN];
677 
678         /* Debugging crud */
679 
680         unsigned long sd_last_warning;
681         struct dentry *debugfs_dir;    /* debugfs directory */
682         struct dentry *debugfs_dentry_glocks; /* for debugfs */
683 };
684 
685 #endif /* __INCORE_DOT_H__ */
686 
687 

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