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 #include <linux/rbtree.h>
22 #include <linux/ktime.h>
23 #include <linux/percpu.h>
24
25 #define DIO_WAIT 0x00000010
26 #define DIO_METADATA 0x00000020
27
28 struct gfs2_log_operations;
29 struct gfs2_log_element;
30 struct gfs2_holder;
31 struct gfs2_glock;
32 struct gfs2_quota_data;
33 struct gfs2_trans;
34 struct gfs2_ail;
35 struct gfs2_jdesc;
36 struct gfs2_sbd;
37 struct lm_lockops;
38
39 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
40
41 struct gfs2_log_header_host {
42 u64 lh_sequence; /* Sequence number of this transaction */
43 u32 lh_flags; /* GFS2_LOG_HEAD_... */
44 u32 lh_tail; /* Block number of log tail */
45 u32 lh_blkno;
46 u32 lh_hash;
47 };
48
49 /*
50 * Structure of operations that are associated with each
51 * type of element in the log.
52 */
53
54 struct gfs2_log_operations {
55 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
56 void (*lo_before_commit) (struct gfs2_sbd *sdp);
57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
58 void (*lo_before_scan) (struct gfs2_jdesc *jd,
59 struct gfs2_log_header_host *head, int pass);
60 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
61 struct gfs2_log_descriptor *ld, __be64 *ptr,
62 int pass);
63 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
64 const char *lo_name;
65 };
66
67 struct gfs2_log_element {
68 struct list_head le_list;
69 const struct gfs2_log_operations *le_ops;
70 };
71
72 #define GBF_FULL 1
73
74 struct gfs2_bitmap {
75 struct buffer_head *bi_bh;
76 char *bi_clone;
77 unsigned long bi_flags;
78 u32 bi_offset;
79 u32 bi_start;
80 u32 bi_len;
81 };
82
83 struct gfs2_rgrpd {
84 struct rb_node rd_node; /* Link with superblock */
85 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
86 u64 rd_addr; /* grp block disk address */
87 u64 rd_data0; /* first data location */
88 u32 rd_length; /* length of rgrp header in fs blocks */
89 u32 rd_data; /* num of data blocks in rgrp */
90 u32 rd_bitbytes; /* number of bytes in data bitmaps */
91 u32 rd_free;
92 u32 rd_free_clone;
93 u32 rd_dinodes;
94 u64 rd_igeneration;
95 struct gfs2_bitmap *rd_bits;
96 struct gfs2_sbd *rd_sbd;
97 u32 rd_last_alloc;
98 u32 rd_flags;
99 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
100 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
101 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
102 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
103 };
104
105 enum gfs2_state_bits {
106 BH_Pinned = BH_PrivateStart,
107 BH_Escaped = BH_PrivateStart + 1,
108 BH_Zeronew = BH_PrivateStart + 2,
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 BUFFER_FNS(Zeronew, zeronew)
116 TAS_BUFFER_FNS(Zeronew, zeronew)
117
118 struct gfs2_bufdata {
119 struct buffer_head *bd_bh;
120 struct gfs2_glock *bd_gl;
121
122 union {
123 struct list_head list_tr;
124 u64 blkno;
125 } u;
126 #define bd_list_tr u.list_tr
127 #define bd_blkno u.blkno
128
129 struct gfs2_log_element bd_le;
130
131 struct gfs2_ail *bd_ail;
132 struct list_head bd_ail_st_list;
133 struct list_head bd_ail_gl_list;
134 };
135
136 /*
137 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
138 * prefix of lock_dlm_ gets awkward.
139 */
140
141 #define GDLM_STRNAME_BYTES 25
142 #define GDLM_LVB_SIZE 32
143
144 /*
145 * ls_recover_flags:
146 *
147 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
148 * held by failed nodes whose journals need recovery. Those locks should
149 * only be used for journal recovery until the journal recovery is done.
150 * This is set by the dlm recover_prep callback and cleared by the
151 * gfs2_control thread when journal recovery is complete. To avoid
152 * races between recover_prep setting and gfs2_control clearing, recover_spin
153 * is held while changing this bit and reading/writing recover_block
154 * and recover_start.
155 *
156 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
157 *
158 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
159 * recovery of all journals before allowing other nodes to mount the fs.
160 * This is cleared when FIRST_MOUNT_DONE is set.
161 *
162 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
163 * recovery of all journals, and now allows other nodes to mount the fs.
164 *
165 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
166 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
167 * control clearing BLOCK_LOCKS for further recoveries.
168 *
169 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
170 *
171 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
172 * and recover_done(), i.e. set while recover_block == recover_start.
173 */
174
175 enum {
176 DFL_BLOCK_LOCKS = 0,
177 DFL_NO_DLM_OPS = 1,
178 DFL_FIRST_MOUNT = 2,
179 DFL_FIRST_MOUNT_DONE = 3,
180 DFL_MOUNT_DONE = 4,
181 DFL_UNMOUNT = 5,
182 DFL_DLM_RECOVERY = 6,
183 };
184
185 struct lm_lockname {
186 u64 ln_number;
187 unsigned int ln_type;
188 };
189
190 #define lm_name_equal(name1, name2) \
191 (((name1)->ln_number == (name2)->ln_number) && \
192 ((name1)->ln_type == (name2)->ln_type))
193
194
195 struct gfs2_glock_operations {
196 void (*go_xmote_th) (struct gfs2_glock *gl);
197 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
198 void (*go_inval) (struct gfs2_glock *gl, int flags);
199 int (*go_demote_ok) (const struct gfs2_glock *gl);
200 int (*go_lock) (struct gfs2_holder *gh);
201 void (*go_unlock) (struct gfs2_holder *gh);
202 int (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
203 void (*go_callback) (struct gfs2_glock *gl);
204 const int go_type;
205 const unsigned long go_flags;
206 #define GLOF_ASPACE 1
207 };
208
209 enum {
210 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
211 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
212 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
213 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
214 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
215 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
216 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
217 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
218 GFS2_NR_LKSTATS
219 };
220
221 struct gfs2_lkstats {
222 s64 stats[GFS2_NR_LKSTATS];
223 };
224
225 enum {
226 /* States */
227 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
228 HIF_FIRST = 7,
229 HIF_WAIT = 10,
230 };
231
232 struct gfs2_holder {
233 struct list_head gh_list;
234
235 struct gfs2_glock *gh_gl;
236 struct pid *gh_owner_pid;
237 unsigned int gh_state;
238 unsigned gh_flags;
239
240 int gh_error;
241 unsigned long gh_iflags; /* HIF_... */
242 unsigned long gh_ip;
243 };
244
245 enum {
246 GLF_LOCK = 1,
247 GLF_DEMOTE = 3,
248 GLF_PENDING_DEMOTE = 4,
249 GLF_DEMOTE_IN_PROGRESS = 5,
250 GLF_DIRTY = 6,
251 GLF_LFLUSH = 7,
252 GLF_INVALIDATE_IN_PROGRESS = 8,
253 GLF_REPLY_PENDING = 9,
254 GLF_INITIAL = 10,
255 GLF_FROZEN = 11,
256 GLF_QUEUED = 12,
257 GLF_LRU = 13,
258 GLF_OBJECT = 14, /* Used only for tracing */
259 GLF_BLOCKING = 15,
260 };
261
262 struct gfs2_glock {
263 struct hlist_bl_node gl_list;
264 struct gfs2_sbd *gl_sbd;
265 unsigned long gl_flags; /* GLF_... */
266 struct lm_lockname gl_name;
267 atomic_t gl_ref;
268
269 spinlock_t gl_spin;
270
271 /* State fields protected by gl_spin */
272 unsigned int gl_state:2, /* Current state */
273 gl_target:2, /* Target state */
274 gl_demote_state:2, /* State requested by remote node */
275 gl_req:2, /* State in last dlm request */
276 gl_reply:8; /* Last reply from the dlm */
277
278 unsigned int gl_hash;
279 unsigned long gl_demote_time; /* time of first demote request */
280 long gl_hold_time;
281 struct list_head gl_holders;
282
283 const struct gfs2_glock_operations *gl_ops;
284 ktime_t gl_dstamp;
285 struct gfs2_lkstats gl_stats;
286 struct dlm_lksb gl_lksb;
287 char gl_lvb[32];
288 unsigned long gl_tchange;
289 void *gl_object;
290
291 struct list_head gl_lru;
292 struct list_head gl_ail_list;
293 atomic_t gl_ail_count;
294 atomic_t gl_revokes;
295 struct delayed_work gl_work;
296 struct work_struct gl_delete;
297 struct rcu_head gl_rcu;
298 };
299
300 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
301
302 struct gfs2_qadata { /* quota allocation data */
303 /* Quota stuff */
304 struct gfs2_quota_data *qa_qd[2*MAXQUOTAS];
305 struct gfs2_holder qa_qd_ghs[2*MAXQUOTAS];
306 unsigned int qa_qd_num;
307 };
308
309 struct gfs2_blkreserv {
310 u32 rs_requested; /* Filled in by caller of gfs2_inplace_reserve() */
311 struct gfs2_holder rs_rgd_gh; /* Filled in by gfs2_inplace_reserve() */
312 };
313
314 enum {
315 GIF_INVALID = 0,
316 GIF_QD_LOCKED = 1,
317 GIF_ALLOC_FAILED = 2,
318 GIF_SW_PAGED = 3,
319 };
320
321
322 struct gfs2_inode {
323 struct inode i_inode;
324 u64 i_no_addr;
325 u64 i_no_formal_ino;
326 u64 i_generation;
327 u64 i_eattr;
328 unsigned long i_flags; /* GIF_... */
329 struct gfs2_glock *i_gl; /* Move into i_gh? */
330 struct gfs2_holder i_iopen_gh;
331 struct gfs2_holder i_gh; /* for prepare/commit_write only */
332 struct gfs2_qadata *i_qadata; /* quota allocation data */
333 struct gfs2_blkreserv *i_res; /* resource group block reservation */
334 struct gfs2_rgrpd *i_rgd;
335 u64 i_goal; /* goal block for allocations */
336 struct rw_semaphore i_rw_mutex;
337 struct list_head i_trunc_list;
338 __be64 *i_hash_cache;
339 u32 i_entries;
340 u32 i_diskflags;
341 u8 i_height;
342 u8 i_depth;
343 };
344
345 /*
346 * Since i_inode is the first element of struct gfs2_inode,
347 * this is effectively a cast.
348 */
GFS2_I(struct inode * inode)349 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
350 {
351 return container_of(inode, struct gfs2_inode, i_inode);
352 }
353
GFS2_SB(const struct inode * inode)354 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
355 {
356 return inode->i_sb->s_fs_info;
357 }
358
359 struct gfs2_file {
360 struct mutex f_fl_mutex;
361 struct gfs2_holder f_fl_gh;
362 };
363
364 struct gfs2_revoke_replay {
365 struct list_head rr_list;
366 u64 rr_blkno;
367 unsigned int rr_where;
368 };
369
370 enum {
371 QDF_USER = 0,
372 QDF_CHANGE = 1,
373 QDF_LOCKED = 2,
374 QDF_REFRESH = 3,
375 };
376
377 struct gfs2_quota_data {
378 struct list_head qd_list;
379 struct list_head qd_reclaim;
380
381 atomic_t qd_count;
382
383 u32 qd_id;
384 unsigned long qd_flags; /* QDF_... */
385
386 s64 qd_change;
387 s64 qd_change_sync;
388
389 unsigned int qd_slot;
390 unsigned int qd_slot_count;
391
392 struct buffer_head *qd_bh;
393 struct gfs2_quota_change *qd_bh_qc;
394 unsigned int qd_bh_count;
395
396 struct gfs2_glock *qd_gl;
397 struct gfs2_quota_lvb qd_qb;
398
399 u64 qd_sync_gen;
400 unsigned long qd_last_warn;
401 };
402
403 struct gfs2_trans {
404 unsigned long tr_ip;
405
406 unsigned int tr_blocks;
407 unsigned int tr_revokes;
408 unsigned int tr_reserved;
409
410 struct gfs2_holder tr_t_gh;
411
412 int tr_touched;
413
414 unsigned int tr_num_buf;
415 unsigned int tr_num_buf_new;
416 unsigned int tr_num_databuf_new;
417 unsigned int tr_num_buf_rm;
418 unsigned int tr_num_databuf_rm;
419 struct list_head tr_list_buf;
420
421 unsigned int tr_num_revoke;
422 unsigned int tr_num_revoke_rm;
423 };
424
425 struct gfs2_ail {
426 struct list_head ai_list;
427
428 unsigned int ai_first;
429 struct list_head ai_ail1_list;
430 struct list_head ai_ail2_list;
431 };
432
433 struct gfs2_journal_extent {
434 struct list_head extent_list;
435
436 unsigned int lblock; /* First logical block */
437 u64 dblock; /* First disk block */
438 u64 blocks;
439 };
440
441 struct gfs2_jdesc {
442 struct list_head jd_list;
443 struct list_head extent_list;
444 struct work_struct jd_work;
445 struct inode *jd_inode;
446 unsigned long jd_flags;
447 #define JDF_RECOVERY 1
448 unsigned int jd_jid;
449 unsigned int jd_blocks;
450 int jd_recover_error;
451 };
452
453 struct gfs2_statfs_change_host {
454 s64 sc_total;
455 s64 sc_free;
456 s64 sc_dinodes;
457 };
458
459 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
460 #define GFS2_QUOTA_OFF 0
461 #define GFS2_QUOTA_ACCOUNT 1
462 #define GFS2_QUOTA_ON 2
463
464 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
465 #define GFS2_DATA_WRITEBACK 1
466 #define GFS2_DATA_ORDERED 2
467
468 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
469 #define GFS2_ERRORS_WITHDRAW 0
470 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
471 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
472 #define GFS2_ERRORS_PANIC 3
473
474 struct gfs2_args {
475 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
476 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
477 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
478 unsigned int ar_spectator:1; /* Don't get a journal */
479 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
480 unsigned int ar_debug:1; /* Oops on errors */
481 unsigned int ar_posix_acl:1; /* Enable posix acls */
482 unsigned int ar_quota:2; /* off/account/on */
483 unsigned int ar_suiddir:1; /* suiddir support */
484 unsigned int ar_data:2; /* ordered/writeback */
485 unsigned int ar_meta:1; /* mount metafs */
486 unsigned int ar_discard:1; /* discard requests */
487 unsigned int ar_errors:2; /* errors=withdraw | panic */
488 unsigned int ar_nobarrier:1; /* do not send barriers */
489 int ar_commit; /* Commit interval */
490 int ar_statfs_quantum; /* The fast statfs interval */
491 int ar_quota_quantum; /* The quota interval */
492 int ar_statfs_percent; /* The % change to force sync */
493 };
494
495 struct gfs2_tune {
496 spinlock_t gt_spin;
497
498 unsigned int gt_logd_secs;
499
500 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
501 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
502 unsigned int gt_quota_scale_num; /* Numerator */
503 unsigned int gt_quota_scale_den; /* Denominator */
504 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
505 unsigned int gt_new_files_jdata;
506 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
507 unsigned int gt_complain_secs;
508 unsigned int gt_statfs_quantum;
509 unsigned int gt_statfs_slow;
510 };
511
512 enum {
513 SDF_JOURNAL_CHECKED = 0,
514 SDF_JOURNAL_LIVE = 1,
515 SDF_SHUTDOWN = 2,
516 SDF_NOBARRIERS = 3,
517 SDF_NORECOVERY = 4,
518 SDF_DEMOTE = 5,
519 SDF_NOJOURNALID = 6,
520 SDF_RORECOVERY = 7, /* read only recovery */
521 };
522
523 #define GFS2_FSNAME_LEN 256
524
525 struct gfs2_inum_host {
526 u64 no_formal_ino;
527 u64 no_addr;
528 };
529
530 struct gfs2_sb_host {
531 u32 sb_magic;
532 u32 sb_type;
533 u32 sb_format;
534
535 u32 sb_fs_format;
536 u32 sb_multihost_format;
537 u32 sb_bsize;
538 u32 sb_bsize_shift;
539
540 struct gfs2_inum_host sb_master_dir;
541 struct gfs2_inum_host sb_root_dir;
542
543 char sb_lockproto[GFS2_LOCKNAME_LEN];
544 char sb_locktable[GFS2_LOCKNAME_LEN];
545 };
546
547 /*
548 * lm_mount() return values
549 *
550 * ls_jid - the journal ID this node should use
551 * ls_first - this node is the first to mount the file system
552 * ls_lockspace - lock module's context for this file system
553 * ls_ops - lock module's functions
554 */
555
556 struct lm_lockstruct {
557 int ls_jid;
558 unsigned int ls_first;
559 unsigned int ls_nodir;
560 const struct lm_lockops *ls_ops;
561 dlm_lockspace_t *ls_dlm;
562
563 int ls_recover_jid_done; /* These two are deprecated, */
564 int ls_recover_jid_status; /* used previously by gfs_controld */
565
566 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
567 struct dlm_lksb ls_control_lksb; /* control_lock */
568 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
569 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
570
571 spinlock_t ls_recover_spin; /* protects following fields */
572 unsigned long ls_recover_flags; /* DFL_ */
573 uint32_t ls_recover_mount; /* gen in first recover_done cb */
574 uint32_t ls_recover_start; /* gen in last recover_done cb */
575 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
576 uint32_t ls_recover_size; /* size of recover_submit, recover_result */
577 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
578 uint32_t *ls_recover_result; /* result of last jid recovery */
579 };
580
581 struct gfs2_pcpu_lkstats {
582 /* One struct for each glock type */
583 struct gfs2_lkstats lkstats[10];
584 };
585
586 struct gfs2_sbd {
587 struct super_block *sd_vfs;
588 struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
589 struct kobject sd_kobj;
590 unsigned long sd_flags; /* SDF_... */
591 struct gfs2_sb_host sd_sb;
592
593 /* Constants computed on mount */
594
595 u32 sd_fsb2bb;
596 u32 sd_fsb2bb_shift;
597 u32 sd_diptrs; /* Number of pointers in a dinode */
598 u32 sd_inptrs; /* Number of pointers in a indirect block */
599 u32 sd_jbsize; /* Size of a journaled data block */
600 u32 sd_hash_bsize; /* sizeof(exhash block) */
601 u32 sd_hash_bsize_shift;
602 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
603 u32 sd_qc_per_block;
604 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
605 u32 sd_max_height; /* Max height of a file's metadata tree */
606 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
607 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
608 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
609
610 struct gfs2_args sd_args; /* Mount arguments */
611 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
612
613 /* Lock Stuff */
614
615 struct lm_lockstruct sd_lockstruct;
616 struct gfs2_holder sd_live_gh;
617 struct gfs2_glock *sd_rename_gl;
618 struct gfs2_glock *sd_trans_gl;
619 wait_queue_head_t sd_glock_wait;
620 atomic_t sd_glock_disposal;
621 struct completion sd_locking_init;
622 struct delayed_work sd_control_work;
623
624 /* Inode Stuff */
625
626 struct dentry *sd_master_dir;
627 struct dentry *sd_root_dir;
628
629 struct inode *sd_jindex;
630 struct inode *sd_statfs_inode;
631 struct inode *sd_sc_inode;
632 struct inode *sd_qc_inode;
633 struct inode *sd_rindex;
634 struct inode *sd_quota_inode;
635
636 /* StatFS stuff */
637
638 spinlock_t sd_statfs_spin;
639 struct gfs2_statfs_change_host sd_statfs_master;
640 struct gfs2_statfs_change_host sd_statfs_local;
641 int sd_statfs_force_sync;
642
643 /* Resource group stuff */
644
645 int sd_rindex_uptodate;
646 spinlock_t sd_rindex_spin;
647 struct rb_root sd_rindex_tree;
648 unsigned int sd_rgrps;
649 unsigned int sd_max_rg_data;
650
651 /* Journal index stuff */
652
653 struct list_head sd_jindex_list;
654 spinlock_t sd_jindex_spin;
655 struct mutex sd_jindex_mutex;
656 unsigned int sd_journals;
657
658 struct gfs2_jdesc *sd_jdesc;
659 struct gfs2_holder sd_journal_gh;
660 struct gfs2_holder sd_jinode_gh;
661
662 struct gfs2_holder sd_sc_gh;
663 struct gfs2_holder sd_qc_gh;
664
665 /* Daemon stuff */
666
667 struct task_struct *sd_logd_process;
668 struct task_struct *sd_quotad_process;
669
670 /* Quota stuff */
671
672 struct list_head sd_quota_list;
673 atomic_t sd_quota_count;
674 struct mutex sd_quota_mutex;
675 wait_queue_head_t sd_quota_wait;
676 struct list_head sd_trunc_list;
677 spinlock_t sd_trunc_lock;
678
679 unsigned int sd_quota_slots;
680 unsigned int sd_quota_chunks;
681 unsigned char **sd_quota_bitmap;
682
683 u64 sd_quota_sync_gen;
684
685 /* Log stuff */
686
687 spinlock_t sd_log_lock;
688
689 unsigned int sd_log_blks_reserved;
690 unsigned int sd_log_commited_buf;
691 unsigned int sd_log_commited_databuf;
692 int sd_log_commited_revoke;
693
694 atomic_t sd_log_pinned;
695 unsigned int sd_log_num_buf;
696 unsigned int sd_log_num_revoke;
697 unsigned int sd_log_num_rg;
698 unsigned int sd_log_num_databuf;
699
700 struct list_head sd_log_le_buf;
701 struct list_head sd_log_le_revoke;
702 struct list_head sd_log_le_rg;
703 struct list_head sd_log_le_databuf;
704 struct list_head sd_log_le_ordered;
705
706 atomic_t sd_log_thresh1;
707 atomic_t sd_log_thresh2;
708 atomic_t sd_log_blks_free;
709 wait_queue_head_t sd_log_waitq;
710 wait_queue_head_t sd_logd_waitq;
711
712 u64 sd_log_sequence;
713 unsigned int sd_log_head;
714 unsigned int sd_log_tail;
715 int sd_log_idle;
716
717 struct rw_semaphore sd_log_flush_lock;
718 atomic_t sd_log_in_flight;
719 wait_queue_head_t sd_log_flush_wait;
720
721 unsigned int sd_log_flush_head;
722 u64 sd_log_flush_wrapped;
723
724 spinlock_t sd_ail_lock;
725 struct list_head sd_ail1_list;
726 struct list_head sd_ail2_list;
727
728 /* Replay stuff */
729
730 struct list_head sd_revoke_list;
731 unsigned int sd_replay_tail;
732
733 unsigned int sd_found_blocks;
734 unsigned int sd_found_revokes;
735 unsigned int sd_replayed_blocks;
736
737 /* For quiescing the filesystem */
738
739 struct gfs2_holder sd_freeze_gh;
740 struct mutex sd_freeze_lock;
741 unsigned int sd_freeze_count;
742
743 char sd_fsname[GFS2_FSNAME_LEN];
744 char sd_table_name[GFS2_FSNAME_LEN];
745 char sd_proto_name[GFS2_FSNAME_LEN];
746
747 /* Debugging crud */
748
749 unsigned long sd_last_warning;
750 struct dentry *debugfs_dir; /* debugfs directory */
751 struct dentry *debugfs_dentry_glocks;
752 struct dentry *debugfs_dentry_glstats;
753 struct dentry *debugfs_dentry_sbstats;
754 };
755
gfs2_glstats_inc(struct gfs2_glock * gl,int which)756 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
757 {
758 gl->gl_stats.stats[which]++;
759 }
760
gfs2_sbstats_inc(const struct gfs2_glock * gl,int which)761 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
762 {
763 const struct gfs2_sbd *sdp = gl->gl_sbd;
764 preempt_disable();
765 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
766 preempt_enable();
767 }
768
769 #endif /* __INCORE_DOT_H__ */
770
771