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 #include <linux/lockref.h>
25 #include <linux/rhashtable.h>
26
27 #define DIO_WAIT 0x00000010
28 #define DIO_METADATA 0x00000020
29
30 struct gfs2_log_operations;
31 struct gfs2_bufdata;
32 struct gfs2_holder;
33 struct gfs2_glock;
34 struct gfs2_quota_data;
35 struct gfs2_trans;
36 struct gfs2_jdesc;
37 struct gfs2_sbd;
38 struct lm_lockops;
39
40 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
41
42 struct gfs2_log_header_host {
43 u64 lh_sequence; /* Sequence number of this transaction */
44 u32 lh_flags; /* GFS2_LOG_HEAD_... */
45 u32 lh_tail; /* Block number of log tail */
46 u32 lh_blkno;
47 u32 lh_hash;
48 };
49
50 /*
51 * Structure of operations that are associated with each
52 * type of element in the log.
53 */
54
55 struct gfs2_log_operations {
56 void (*lo_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
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 #define GBF_FULL 1
68
69 struct gfs2_bitmap {
70 struct buffer_head *bi_bh;
71 char *bi_clone;
72 unsigned long bi_flags;
73 u32 bi_offset;
74 u32 bi_start;
75 u32 bi_len;
76 u32 bi_blocks;
77 };
78
79 struct gfs2_rgrpd {
80 struct rb_node rd_node; /* Link with superblock */
81 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
82 u64 rd_addr; /* grp block disk address */
83 u64 rd_data0; /* first data location */
84 u32 rd_length; /* length of rgrp header in fs blocks */
85 u32 rd_data; /* num of data blocks in rgrp */
86 u32 rd_bitbytes; /* number of bytes in data bitmaps */
87 u32 rd_free;
88 u32 rd_reserved; /* number of blocks reserved */
89 u32 rd_free_clone;
90 u32 rd_dinodes;
91 u64 rd_igeneration;
92 struct gfs2_bitmap *rd_bits;
93 struct gfs2_sbd *rd_sbd;
94 struct gfs2_rgrp_lvb *rd_rgl;
95 u32 rd_last_alloc;
96 u32 rd_flags;
97 u32 rd_extfail_pt; /* extent failure point */
98 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
99 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
100 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
101 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
102 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
103 spinlock_t rd_rsspin; /* protects reservation related vars */
104 struct rb_root rd_rstree; /* multi-block reservation tree */
105 };
106
107 struct gfs2_rbm {
108 struct gfs2_rgrpd *rgd;
109 u32 offset; /* The offset is bitmap relative */
110 int bii; /* Bitmap index */
111 };
112
rbm_bi(const struct gfs2_rbm * rbm)113 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
114 {
115 return rbm->rgd->rd_bits + rbm->bii;
116 }
117
gfs2_rbm_to_block(const struct gfs2_rbm * rbm)118 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
119 {
120 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
121 rbm->offset;
122 }
123
gfs2_rbm_eq(const struct gfs2_rbm * rbm1,const struct gfs2_rbm * rbm2)124 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
125 const struct gfs2_rbm *rbm2)
126 {
127 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
128 (rbm1->offset == rbm2->offset);
129 }
130
131 enum gfs2_state_bits {
132 BH_Pinned = BH_PrivateStart,
133 BH_Escaped = BH_PrivateStart + 1,
134 BH_Zeronew = BH_PrivateStart + 2,
135 };
136
137 BUFFER_FNS(Pinned, pinned)
138 TAS_BUFFER_FNS(Pinned, pinned)
139 BUFFER_FNS(Escaped, escaped)
140 TAS_BUFFER_FNS(Escaped, escaped)
141 BUFFER_FNS(Zeronew, zeronew)
142 TAS_BUFFER_FNS(Zeronew, zeronew)
143
144 struct gfs2_bufdata {
145 struct buffer_head *bd_bh;
146 struct gfs2_glock *bd_gl;
147 u64 bd_blkno;
148
149 struct list_head bd_list;
150 const struct gfs2_log_operations *bd_ops;
151
152 struct gfs2_trans *bd_tr;
153 struct list_head bd_ail_st_list;
154 struct list_head bd_ail_gl_list;
155 };
156
157 /*
158 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
159 * prefix of lock_dlm_ gets awkward.
160 */
161
162 #define GDLM_STRNAME_BYTES 25
163 #define GDLM_LVB_SIZE 32
164
165 /*
166 * ls_recover_flags:
167 *
168 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
169 * held by failed nodes whose journals need recovery. Those locks should
170 * only be used for journal recovery until the journal recovery is done.
171 * This is set by the dlm recover_prep callback and cleared by the
172 * gfs2_control thread when journal recovery is complete. To avoid
173 * races between recover_prep setting and gfs2_control clearing, recover_spin
174 * is held while changing this bit and reading/writing recover_block
175 * and recover_start.
176 *
177 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
178 *
179 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
180 * recovery of all journals before allowing other nodes to mount the fs.
181 * This is cleared when FIRST_MOUNT_DONE is set.
182 *
183 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
184 * recovery of all journals, and now allows other nodes to mount the fs.
185 *
186 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
187 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
188 * control clearing BLOCK_LOCKS for further recoveries.
189 *
190 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
191 *
192 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
193 * and recover_done(), i.e. set while recover_block == recover_start.
194 */
195
196 enum {
197 DFL_BLOCK_LOCKS = 0,
198 DFL_NO_DLM_OPS = 1,
199 DFL_FIRST_MOUNT = 2,
200 DFL_FIRST_MOUNT_DONE = 3,
201 DFL_MOUNT_DONE = 4,
202 DFL_UNMOUNT = 5,
203 DFL_DLM_RECOVERY = 6,
204 };
205
206 struct lm_lockname {
207 struct gfs2_sbd *ln_sbd;
208 u64 ln_number;
209 unsigned int ln_type;
210 } __packed __aligned(sizeof(int));
211
212 #define lm_name_equal(name1, name2) \
213 (((name1)->ln_number == (name2)->ln_number) && \
214 ((name1)->ln_type == (name2)->ln_type) && \
215 ((name1)->ln_sbd == (name2)->ln_sbd))
216
217
218 struct gfs2_glock_operations {
219 void (*go_sync) (struct gfs2_glock *gl);
220 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
221 void (*go_inval) (struct gfs2_glock *gl, int flags);
222 int (*go_demote_ok) (const struct gfs2_glock *gl);
223 int (*go_lock) (struct gfs2_holder *gh);
224 void (*go_unlock) (struct gfs2_holder *gh);
225 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
226 void (*go_callback)(struct gfs2_glock *gl, bool remote);
227 const int go_type;
228 const unsigned long go_flags;
229 #define GLOF_ASPACE 1
230 #define GLOF_LVB 2
231 #define GLOF_LRU 4
232 };
233
234 enum {
235 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
236 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
237 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
238 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
239 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
240 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
241 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
242 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
243 GFS2_NR_LKSTATS
244 };
245
246 struct gfs2_lkstats {
247 u64 stats[GFS2_NR_LKSTATS];
248 };
249
250 enum {
251 /* States */
252 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
253 HIF_FIRST = 7,
254 HIF_WAIT = 10,
255 };
256
257 struct gfs2_holder {
258 struct list_head gh_list;
259
260 struct gfs2_glock *gh_gl;
261 struct pid *gh_owner_pid;
262 unsigned int gh_state;
263 unsigned gh_flags;
264
265 int gh_error;
266 unsigned long gh_iflags; /* HIF_... */
267 unsigned long gh_ip;
268 };
269
270 /* Number of quota types we support */
271 #define GFS2_MAXQUOTAS 2
272
273 /* Resource group multi-block reservation, in order of appearance:
274
275 Step 1. Function prepares to write, allocates a mb, sets the size hint.
276 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
277 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
278 Step 4. Bits are assigned from the rgrp based on either the reservation
279 or wherever it can.
280 */
281
282 struct gfs2_blkreserv {
283 /* components used during write (step 1): */
284 atomic_t rs_sizehint; /* hint of the write size */
285
286 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */
287 struct rb_node rs_node; /* link to other block reservations */
288 struct gfs2_rbm rs_rbm; /* Start of reservation */
289 u32 rs_free; /* how many blocks are still free */
290 u64 rs_inum; /* Inode number for reservation */
291
292 /* ancillary quota stuff */
293 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS];
294 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS];
295 unsigned int rs_qa_qd_num;
296 };
297
298 /*
299 * Allocation parameters
300 * @target: The number of blocks we'd ideally like to allocate
301 * @aflags: The flags (e.g. Orlov flag)
302 *
303 * The intent is to gradually expand this structure over time in
304 * order to give more information, e.g. alignment, min extent size
305 * to the allocation code.
306 */
307 struct gfs2_alloc_parms {
308 u64 target;
309 u32 min_target;
310 u32 aflags;
311 u64 allowed;
312 };
313
314 enum {
315 GLF_LOCK = 1,
316 GLF_DEMOTE = 3,
317 GLF_PENDING_DEMOTE = 4,
318 GLF_DEMOTE_IN_PROGRESS = 5,
319 GLF_DIRTY = 6,
320 GLF_LFLUSH = 7,
321 GLF_INVALIDATE_IN_PROGRESS = 8,
322 GLF_REPLY_PENDING = 9,
323 GLF_INITIAL = 10,
324 GLF_FROZEN = 11,
325 GLF_QUEUED = 12,
326 GLF_LRU = 13,
327 GLF_OBJECT = 14, /* Used only for tracing */
328 GLF_BLOCKING = 15,
329 };
330
331 struct gfs2_glock {
332 struct hlist_bl_node gl_list;
333 unsigned long gl_flags; /* GLF_... */
334 struct lm_lockname gl_name;
335
336 struct lockref gl_lockref;
337
338 /* State fields protected by gl_lockref.lock */
339 unsigned int gl_state:2, /* Current state */
340 gl_target:2, /* Target state */
341 gl_demote_state:2, /* State requested by remote node */
342 gl_req:2, /* State in last dlm request */
343 gl_reply:8; /* Last reply from the dlm */
344
345 unsigned long gl_demote_time; /* time of first demote request */
346 long gl_hold_time;
347 struct list_head gl_holders;
348
349 const struct gfs2_glock_operations *gl_ops;
350 ktime_t gl_dstamp;
351 struct gfs2_lkstats gl_stats;
352 struct dlm_lksb gl_lksb;
353 unsigned long gl_tchange;
354 void *gl_object;
355
356 struct list_head gl_lru;
357 struct list_head gl_ail_list;
358 atomic_t gl_ail_count;
359 atomic_t gl_revokes;
360 struct delayed_work gl_work;
361 union {
362 /* For inode and iopen glocks only */
363 struct work_struct gl_delete;
364 /* For rgrp glocks only */
365 struct {
366 loff_t start;
367 loff_t end;
368 } gl_vm;
369 };
370 struct rcu_head gl_rcu;
371 struct rhash_head gl_node;
372 };
373
374 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
375
376 enum {
377 GIF_INVALID = 0,
378 GIF_QD_LOCKED = 1,
379 GIF_ALLOC_FAILED = 2,
380 GIF_SW_PAGED = 3,
381 GIF_ORDERED = 4,
382 GIF_FREE_VFS_INODE = 5,
383 };
384
385 struct gfs2_inode {
386 struct inode i_inode;
387 u64 i_no_addr;
388 u64 i_no_formal_ino;
389 u64 i_generation;
390 u64 i_eattr;
391 unsigned long i_flags; /* GIF_... */
392 struct gfs2_glock *i_gl; /* Move into i_gh? */
393 struct gfs2_holder i_iopen_gh;
394 struct gfs2_holder i_gh; /* for prepare/commit_write only */
395 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */
396 struct gfs2_rgrpd *i_rgd;
397 u64 i_goal; /* goal block for allocations */
398 struct rw_semaphore i_rw_mutex;
399 struct list_head i_ordered;
400 struct list_head i_trunc_list;
401 __be64 *i_hash_cache;
402 u32 i_entries;
403 u32 i_diskflags;
404 u8 i_height;
405 u8 i_depth;
406 };
407
408 /*
409 * Since i_inode is the first element of struct gfs2_inode,
410 * this is effectively a cast.
411 */
GFS2_I(struct inode * inode)412 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
413 {
414 return container_of(inode, struct gfs2_inode, i_inode);
415 }
416
GFS2_SB(const struct inode * inode)417 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
418 {
419 return inode->i_sb->s_fs_info;
420 }
421
422 struct gfs2_file {
423 struct mutex f_fl_mutex;
424 struct gfs2_holder f_fl_gh;
425 };
426
427 struct gfs2_revoke_replay {
428 struct list_head rr_list;
429 u64 rr_blkno;
430 unsigned int rr_where;
431 };
432
433 enum {
434 QDF_CHANGE = 1,
435 QDF_LOCKED = 2,
436 QDF_REFRESH = 3,
437 QDF_QMSG_QUIET = 4,
438 };
439
440 struct gfs2_quota_data {
441 struct hlist_bl_node qd_hlist;
442 struct list_head qd_list;
443 struct kqid qd_id;
444 struct gfs2_sbd *qd_sbd;
445 struct lockref qd_lockref;
446 struct list_head qd_lru;
447 unsigned qd_hash;
448
449 unsigned long qd_flags; /* QDF_... */
450
451 s64 qd_change;
452 s64 qd_change_sync;
453
454 unsigned int qd_slot;
455 unsigned int qd_slot_count;
456
457 struct buffer_head *qd_bh;
458 struct gfs2_quota_change *qd_bh_qc;
459 unsigned int qd_bh_count;
460
461 struct gfs2_glock *qd_gl;
462 struct gfs2_quota_lvb qd_qb;
463
464 u64 qd_sync_gen;
465 unsigned long qd_last_warn;
466 struct rcu_head qd_rcu;
467 };
468
469 struct gfs2_trans {
470 unsigned long tr_ip;
471
472 unsigned int tr_blocks;
473 unsigned int tr_revokes;
474 unsigned int tr_reserved;
475 unsigned int tr_touched:1;
476 unsigned int tr_attached:1;
477 unsigned int tr_alloced:1;
478
479 unsigned int tr_num_buf_new;
480 unsigned int tr_num_databuf_new;
481 unsigned int tr_num_buf_rm;
482 unsigned int tr_num_databuf_rm;
483 unsigned int tr_num_revoke;
484 unsigned int tr_num_revoke_rm;
485
486 struct list_head tr_list;
487 struct list_head tr_databuf;
488 struct list_head tr_buf;
489
490 unsigned int tr_first;
491 struct list_head tr_ail1_list;
492 struct list_head tr_ail2_list;
493 };
494
495 struct gfs2_journal_extent {
496 struct list_head list;
497
498 unsigned int lblock; /* First logical block */
499 u64 dblock; /* First disk block */
500 u64 blocks;
501 };
502
503 struct gfs2_jdesc {
504 struct list_head jd_list;
505 struct list_head extent_list;
506 unsigned int nr_extents;
507 struct work_struct jd_work;
508 struct inode *jd_inode;
509 unsigned long jd_flags;
510 #define JDF_RECOVERY 1
511 unsigned int jd_jid;
512 unsigned int jd_blocks;
513 int jd_recover_error;
514 /* Replay stuff */
515
516 unsigned int jd_found_blocks;
517 unsigned int jd_found_revokes;
518 unsigned int jd_replayed_blocks;
519
520 struct list_head jd_revoke_list;
521 unsigned int jd_replay_tail;
522
523 };
524
525 struct gfs2_statfs_change_host {
526 s64 sc_total;
527 s64 sc_free;
528 s64 sc_dinodes;
529 };
530
531 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
532 #define GFS2_QUOTA_OFF 0
533 #define GFS2_QUOTA_ACCOUNT 1
534 #define GFS2_QUOTA_ON 2
535
536 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
537 #define GFS2_DATA_WRITEBACK 1
538 #define GFS2_DATA_ORDERED 2
539
540 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
541 #define GFS2_ERRORS_WITHDRAW 0
542 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
543 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
544 #define GFS2_ERRORS_PANIC 3
545
546 struct gfs2_args {
547 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
548 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
549 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
550 unsigned int ar_spectator:1; /* Don't get a journal */
551 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
552 unsigned int ar_debug:1; /* Oops on errors */
553 unsigned int ar_posix_acl:1; /* Enable posix acls */
554 unsigned int ar_quota:2; /* off/account/on */
555 unsigned int ar_suiddir:1; /* suiddir support */
556 unsigned int ar_data:2; /* ordered/writeback */
557 unsigned int ar_meta:1; /* mount metafs */
558 unsigned int ar_discard:1; /* discard requests */
559 unsigned int ar_errors:2; /* errors=withdraw | panic */
560 unsigned int ar_nobarrier:1; /* do not send barriers */
561 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
562 int ar_commit; /* Commit interval */
563 int ar_statfs_quantum; /* The fast statfs interval */
564 int ar_quota_quantum; /* The quota interval */
565 int ar_statfs_percent; /* The % change to force sync */
566 };
567
568 struct gfs2_tune {
569 spinlock_t gt_spin;
570
571 unsigned int gt_logd_secs;
572
573 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
574 unsigned int gt_quota_scale_num; /* Numerator */
575 unsigned int gt_quota_scale_den; /* Denominator */
576 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
577 unsigned int gt_new_files_jdata;
578 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
579 unsigned int gt_complain_secs;
580 unsigned int gt_statfs_quantum;
581 unsigned int gt_statfs_slow;
582 };
583
584 enum {
585 SDF_JOURNAL_CHECKED = 0,
586 SDF_JOURNAL_LIVE = 1,
587 SDF_SHUTDOWN = 2,
588 SDF_NOBARRIERS = 3,
589 SDF_NORECOVERY = 4,
590 SDF_DEMOTE = 5,
591 SDF_NOJOURNALID = 6,
592 SDF_RORECOVERY = 7, /* read only recovery */
593 SDF_SKIP_DLM_UNLOCK = 8,
594 };
595
596 enum gfs2_freeze_state {
597 SFS_UNFROZEN = 0,
598 SFS_STARTING_FREEZE = 1,
599 SFS_FROZEN = 2,
600 };
601
602 #define GFS2_FSNAME_LEN 256
603
604 struct gfs2_inum_host {
605 u64 no_formal_ino;
606 u64 no_addr;
607 };
608
609 struct gfs2_sb_host {
610 u32 sb_magic;
611 u32 sb_type;
612 u32 sb_format;
613
614 u32 sb_fs_format;
615 u32 sb_multihost_format;
616 u32 sb_bsize;
617 u32 sb_bsize_shift;
618
619 struct gfs2_inum_host sb_master_dir;
620 struct gfs2_inum_host sb_root_dir;
621
622 char sb_lockproto[GFS2_LOCKNAME_LEN];
623 char sb_locktable[GFS2_LOCKNAME_LEN];
624 };
625
626 /*
627 * lm_mount() return values
628 *
629 * ls_jid - the journal ID this node should use
630 * ls_first - this node is the first to mount the file system
631 * ls_lockspace - lock module's context for this file system
632 * ls_ops - lock module's functions
633 */
634
635 struct lm_lockstruct {
636 int ls_jid;
637 unsigned int ls_first;
638 const struct lm_lockops *ls_ops;
639 dlm_lockspace_t *ls_dlm;
640
641 int ls_recover_jid_done; /* These two are deprecated, */
642 int ls_recover_jid_status; /* used previously by gfs_controld */
643
644 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
645 struct dlm_lksb ls_control_lksb; /* control_lock */
646 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
647 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
648 char *ls_lvb_bits;
649
650 spinlock_t ls_recover_spin; /* protects following fields */
651 unsigned long ls_recover_flags; /* DFL_ */
652 uint32_t ls_recover_mount; /* gen in first recover_done cb */
653 uint32_t ls_recover_start; /* gen in last recover_done cb */
654 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
655 uint32_t ls_recover_size; /* size of recover_submit, recover_result */
656 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
657 uint32_t *ls_recover_result; /* result of last jid recovery */
658 };
659
660 struct gfs2_pcpu_lkstats {
661 /* One struct for each glock type */
662 struct gfs2_lkstats lkstats[10];
663 };
664
665 struct gfs2_sbd {
666 struct super_block *sd_vfs;
667 struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
668 struct kobject sd_kobj;
669 unsigned long sd_flags; /* SDF_... */
670 struct gfs2_sb_host sd_sb;
671
672 /* Constants computed on mount */
673
674 u32 sd_fsb2bb;
675 u32 sd_fsb2bb_shift;
676 u32 sd_diptrs; /* Number of pointers in a dinode */
677 u32 sd_inptrs; /* Number of pointers in a indirect block */
678 u32 sd_jbsize; /* Size of a journaled data block */
679 u32 sd_hash_bsize; /* sizeof(exhash block) */
680 u32 sd_hash_bsize_shift;
681 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
682 u32 sd_qc_per_block;
683 u32 sd_blocks_per_bitmap;
684 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
685 u32 sd_max_height; /* Max height of a file's metadata tree */
686 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
687 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
688 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
689
690 struct gfs2_args sd_args; /* Mount arguments */
691 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
692
693 /* Lock Stuff */
694
695 struct lm_lockstruct sd_lockstruct;
696 struct gfs2_holder sd_live_gh;
697 struct gfs2_glock *sd_rename_gl;
698 struct gfs2_glock *sd_freeze_gl;
699 struct work_struct sd_freeze_work;
700 wait_queue_head_t sd_glock_wait;
701 atomic_t sd_glock_disposal;
702 struct completion sd_locking_init;
703 struct completion sd_wdack;
704 struct delayed_work sd_control_work;
705
706 /* Inode Stuff */
707
708 struct dentry *sd_master_dir;
709 struct dentry *sd_root_dir;
710
711 struct inode *sd_jindex;
712 struct inode *sd_statfs_inode;
713 struct inode *sd_sc_inode;
714 struct inode *sd_qc_inode;
715 struct inode *sd_rindex;
716 struct inode *sd_quota_inode;
717
718 /* StatFS stuff */
719
720 spinlock_t sd_statfs_spin;
721 struct gfs2_statfs_change_host sd_statfs_master;
722 struct gfs2_statfs_change_host sd_statfs_local;
723 int sd_statfs_force_sync;
724
725 /* Resource group stuff */
726
727 int sd_rindex_uptodate;
728 spinlock_t sd_rindex_spin;
729 struct rb_root sd_rindex_tree;
730 unsigned int sd_rgrps;
731 unsigned int sd_max_rg_data;
732
733 /* Journal index stuff */
734
735 struct list_head sd_jindex_list;
736 spinlock_t sd_jindex_spin;
737 struct mutex sd_jindex_mutex;
738 unsigned int sd_journals;
739
740 struct gfs2_jdesc *sd_jdesc;
741 struct gfs2_holder sd_journal_gh;
742 struct gfs2_holder sd_jinode_gh;
743
744 struct gfs2_holder sd_sc_gh;
745 struct gfs2_holder sd_qc_gh;
746
747 struct completion sd_journal_ready;
748
749 /* Daemon stuff */
750
751 struct task_struct *sd_logd_process;
752 struct task_struct *sd_quotad_process;
753
754 /* Quota stuff */
755
756 struct list_head sd_quota_list;
757 atomic_t sd_quota_count;
758 struct mutex sd_quota_mutex;
759 struct mutex sd_quota_sync_mutex;
760 wait_queue_head_t sd_quota_wait;
761 struct list_head sd_trunc_list;
762 spinlock_t sd_trunc_lock;
763
764 unsigned int sd_quota_slots;
765 unsigned long *sd_quota_bitmap;
766 spinlock_t sd_bitmap_lock;
767
768 u64 sd_quota_sync_gen;
769
770 /* Log stuff */
771
772 struct address_space sd_aspace;
773
774 spinlock_t sd_log_lock;
775
776 struct gfs2_trans *sd_log_tr;
777 unsigned int sd_log_blks_reserved;
778 int sd_log_commited_revoke;
779
780 atomic_t sd_log_pinned;
781 unsigned int sd_log_num_revoke;
782
783 struct list_head sd_log_le_revoke;
784 struct list_head sd_log_le_ordered;
785 spinlock_t sd_ordered_lock;
786
787 atomic_t sd_log_thresh1;
788 atomic_t sd_log_thresh2;
789 atomic_t sd_log_blks_free;
790 wait_queue_head_t sd_log_waitq;
791 wait_queue_head_t sd_logd_waitq;
792
793 u64 sd_log_sequence;
794 unsigned int sd_log_head;
795 unsigned int sd_log_tail;
796 int sd_log_idle;
797
798 struct rw_semaphore sd_log_flush_lock;
799 atomic_t sd_log_in_flight;
800 struct bio *sd_log_bio;
801 wait_queue_head_t sd_log_flush_wait;
802 int sd_log_error;
803
804 atomic_t sd_reserving_log;
805 wait_queue_head_t sd_reserving_log_wait;
806
807 unsigned int sd_log_flush_head;
808 u64 sd_log_flush_wrapped;
809
810 spinlock_t sd_ail_lock;
811 struct list_head sd_ail1_list;
812 struct list_head sd_ail2_list;
813
814 /* For quiescing the filesystem */
815 struct gfs2_holder sd_freeze_gh;
816 atomic_t sd_freeze_state;
817 struct mutex sd_freeze_mutex;
818
819 char sd_fsname[GFS2_FSNAME_LEN];
820 char sd_table_name[GFS2_FSNAME_LEN];
821 char sd_proto_name[GFS2_FSNAME_LEN];
822
823 /* Debugging crud */
824
825 unsigned long sd_last_warning;
826 struct dentry *debugfs_dir; /* debugfs directory */
827 struct dentry *debugfs_dentry_glocks;
828 struct dentry *debugfs_dentry_glstats;
829 struct dentry *debugfs_dentry_sbstats;
830 };
831
gfs2_glstats_inc(struct gfs2_glock * gl,int which)832 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
833 {
834 gl->gl_stats.stats[which]++;
835 }
836
gfs2_sbstats_inc(const struct gfs2_glock * gl,int which)837 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
838 {
839 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
840 preempt_disable();
841 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
842 preempt_enable();
843 }
844
845 #endif /* __INCORE_DOT_H__ */
846
847