1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
4 * Copyright (C) 2004-2008 Red Hat, Inc. All rights reserved.
5 */
6
7 #ifndef __INCORE_DOT_H__
8 #define __INCORE_DOT_H__
9
10 #include <linux/fs.h>
11 #include <linux/kobject.h>
12 #include <linux/workqueue.h>
13 #include <linux/dlm.h>
14 #include <linux/buffer_head.h>
15 #include <linux/rcupdate.h>
16 #include <linux/rculist_bl.h>
17 #include <linux/completion.h>
18 #include <linux/rbtree.h>
19 #include <linux/ktime.h>
20 #include <linux/percpu.h>
21 #include <linux/lockref.h>
22 #include <linux/rhashtable.h>
23
24 #define DIO_WAIT 0x00000010
25 #define DIO_METADATA 0x00000020
26
27 struct gfs2_log_operations;
28 struct gfs2_bufdata;
29 struct gfs2_holder;
30 struct gfs2_glock;
31 struct gfs2_quota_data;
32 struct gfs2_trans;
33 struct gfs2_jdesc;
34 struct gfs2_sbd;
35 struct lm_lockops;
36
37 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
38
39 struct gfs2_log_header_host {
40 u64 lh_sequence; /* Sequence number of this transaction */
41 u32 lh_flags; /* GFS2_LOG_HEAD_... */
42 u32 lh_tail; /* Block number of log tail */
43 u32 lh_blkno;
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_before_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
53 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
54 void (*lo_before_scan) (struct gfs2_jdesc *jd,
55 struct gfs2_log_header_host *head, int pass);
56 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
57 struct gfs2_log_descriptor *ld, __be64 *ptr,
58 int pass);
59 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
60 const char *lo_name;
61 };
62
63 #define GBF_FULL 1
64
65 /**
66 * Clone bitmaps (bi_clone):
67 *
68 * - When a block is freed, we remember the previous state of the block in the
69 * clone bitmap, and only mark the block as free in the real bitmap.
70 *
71 * - When looking for a block to allocate, we check for a free block in the
72 * clone bitmap, and if no clone bitmap exists, in the real bitmap.
73 *
74 * - For allocating a block, we mark it as allocated in the real bitmap, and if
75 * a clone bitmap exists, also in the clone bitmap.
76 *
77 * - At the end of a log_flush, we copy the real bitmap into the clone bitmap
78 * to make the clone bitmap reflect the current allocation state.
79 * (Alternatively, we could remove the clone bitmap.)
80 *
81 * The clone bitmaps are in-core only, and is never written to disk.
82 *
83 * These steps ensure that blocks which have been freed in a transaction cannot
84 * be reallocated in that same transaction.
85 */
86 struct gfs2_bitmap {
87 struct buffer_head *bi_bh;
88 char *bi_clone;
89 unsigned long bi_flags;
90 u32 bi_offset;
91 u32 bi_start;
92 u32 bi_bytes;
93 u32 bi_blocks;
94 };
95
96 struct gfs2_rgrpd {
97 struct rb_node rd_node; /* Link with superblock */
98 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
99 u64 rd_addr; /* grp block disk address */
100 u64 rd_data0; /* first data location */
101 u32 rd_length; /* length of rgrp header in fs blocks */
102 u32 rd_data; /* num of data blocks in rgrp */
103 u32 rd_bitbytes; /* number of bytes in data bitmaps */
104 u32 rd_free;
105 u32 rd_reserved; /* number of blocks reserved */
106 u32 rd_free_clone;
107 u32 rd_dinodes;
108 u64 rd_igeneration;
109 struct gfs2_bitmap *rd_bits;
110 struct gfs2_sbd *rd_sbd;
111 struct gfs2_rgrp_lvb *rd_rgl;
112 u32 rd_last_alloc;
113 u32 rd_flags;
114 u32 rd_extfail_pt; /* extent failure point */
115 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
116 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
117 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
118 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
119 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
120 spinlock_t rd_rsspin; /* protects reservation related vars */
121 struct rb_root rd_rstree; /* multi-block reservation tree */
122 };
123
124 struct gfs2_rbm {
125 struct gfs2_rgrpd *rgd;
126 u32 offset; /* The offset is bitmap relative */
127 int bii; /* Bitmap index */
128 };
129
rbm_bi(const struct gfs2_rbm * rbm)130 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
131 {
132 return rbm->rgd->rd_bits + rbm->bii;
133 }
134
gfs2_rbm_to_block(const struct gfs2_rbm * rbm)135 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
136 {
137 BUG_ON(rbm->offset >= rbm->rgd->rd_data);
138 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
139 rbm->offset;
140 }
141
gfs2_rbm_eq(const struct gfs2_rbm * rbm1,const struct gfs2_rbm * rbm2)142 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
143 const struct gfs2_rbm *rbm2)
144 {
145 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
146 (rbm1->offset == rbm2->offset);
147 }
148
149 enum gfs2_state_bits {
150 BH_Pinned = BH_PrivateStart,
151 BH_Escaped = BH_PrivateStart + 1,
152 };
153
154 BUFFER_FNS(Pinned, pinned)
155 TAS_BUFFER_FNS(Pinned, pinned)
156 BUFFER_FNS(Escaped, escaped)
157 TAS_BUFFER_FNS(Escaped, escaped)
158
159 struct gfs2_bufdata {
160 struct buffer_head *bd_bh;
161 struct gfs2_glock *bd_gl;
162 u64 bd_blkno;
163
164 struct list_head bd_list;
165
166 struct gfs2_trans *bd_tr;
167 struct list_head bd_ail_st_list;
168 struct list_head bd_ail_gl_list;
169 };
170
171 /*
172 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
173 * prefix of lock_dlm_ gets awkward.
174 */
175
176 #define GDLM_STRNAME_BYTES 25
177 #define GDLM_LVB_SIZE 32
178
179 /*
180 * ls_recover_flags:
181 *
182 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
183 * held by failed nodes whose journals need recovery. Those locks should
184 * only be used for journal recovery until the journal recovery is done.
185 * This is set by the dlm recover_prep callback and cleared by the
186 * gfs2_control thread when journal recovery is complete. To avoid
187 * races between recover_prep setting and gfs2_control clearing, recover_spin
188 * is held while changing this bit and reading/writing recover_block
189 * and recover_start.
190 *
191 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
192 *
193 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
194 * recovery of all journals before allowing other nodes to mount the fs.
195 * This is cleared when FIRST_MOUNT_DONE is set.
196 *
197 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
198 * recovery of all journals, and now allows other nodes to mount the fs.
199 *
200 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
201 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
202 * control clearing BLOCK_LOCKS for further recoveries.
203 *
204 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
205 *
206 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
207 * and recover_done(), i.e. set while recover_block == recover_start.
208 */
209
210 enum {
211 DFL_BLOCK_LOCKS = 0,
212 DFL_NO_DLM_OPS = 1,
213 DFL_FIRST_MOUNT = 2,
214 DFL_FIRST_MOUNT_DONE = 3,
215 DFL_MOUNT_DONE = 4,
216 DFL_UNMOUNT = 5,
217 DFL_DLM_RECOVERY = 6,
218 };
219
220 /*
221 * We are using struct lm_lockname as an rhashtable key. Avoid holes within
222 * the struct; padding at the end is fine.
223 */
224 struct lm_lockname {
225 u64 ln_number;
226 struct gfs2_sbd *ln_sbd;
227 unsigned int ln_type;
228 };
229
230 #define lm_name_equal(name1, name2) \
231 (((name1)->ln_number == (name2)->ln_number) && \
232 ((name1)->ln_type == (name2)->ln_type) && \
233 ((name1)->ln_sbd == (name2)->ln_sbd))
234
235
236 struct gfs2_glock_operations {
237 void (*go_sync) (struct gfs2_glock *gl);
238 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
239 void (*go_inval) (struct gfs2_glock *gl, int flags);
240 int (*go_demote_ok) (const struct gfs2_glock *gl);
241 int (*go_lock) (struct gfs2_holder *gh);
242 void (*go_unlock) (struct gfs2_holder *gh);
243 void (*go_dump)(struct seq_file *seq, struct gfs2_glock *gl,
244 const char *fs_id_buf);
245 void (*go_callback)(struct gfs2_glock *gl, bool remote);
246 const int go_type;
247 const unsigned long go_flags;
248 #define GLOF_ASPACE 1
249 #define GLOF_LVB 2
250 #define GLOF_LRU 4
251 };
252
253 enum {
254 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
255 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
256 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
257 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
258 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
259 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
260 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
261 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
262 GFS2_NR_LKSTATS
263 };
264
265 struct gfs2_lkstats {
266 u64 stats[GFS2_NR_LKSTATS];
267 };
268
269 enum {
270 /* States */
271 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
272 HIF_FIRST = 7,
273 HIF_WAIT = 10,
274 };
275
276 struct gfs2_holder {
277 struct list_head gh_list;
278
279 struct gfs2_glock *gh_gl;
280 struct pid *gh_owner_pid;
281 u16 gh_flags;
282 u16 gh_state;
283
284 int gh_error;
285 unsigned long gh_iflags; /* HIF_... */
286 unsigned long gh_ip;
287 };
288
289 /* Number of quota types we support */
290 #define GFS2_MAXQUOTAS 2
291
292 struct gfs2_qadata { /* quota allocation data */
293 /* Quota stuff */
294 struct gfs2_quota_data *qa_qd[2 * GFS2_MAXQUOTAS];
295 struct gfs2_holder qa_qd_ghs[2 * GFS2_MAXQUOTAS];
296 unsigned int qa_qd_num;
297 };
298
299 /* Resource group multi-block reservation, in order of appearance:
300
301 Step 1. Function prepares to write, allocates a mb, sets the size hint.
302 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
303 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
304 Step 4. Bits are assigned from the rgrp based on either the reservation
305 or wherever it can.
306 */
307
308 struct gfs2_blkreserv {
309 struct rb_node rs_node; /* link to other block reservations */
310 struct gfs2_rbm rs_rbm; /* Start of reservation */
311 u32 rs_free; /* how many blocks are still free */
312 };
313
314 /*
315 * Allocation parameters
316 * @target: The number of blocks we'd ideally like to allocate
317 * @aflags: The flags (e.g. Orlov flag)
318 *
319 * The intent is to gradually expand this structure over time in
320 * order to give more information, e.g. alignment, min extent size
321 * to the allocation code.
322 */
323 struct gfs2_alloc_parms {
324 u64 target;
325 u32 min_target;
326 u32 aflags;
327 u64 allowed;
328 };
329
330 enum {
331 GLF_LOCK = 1,
332 GLF_DEMOTE = 3,
333 GLF_PENDING_DEMOTE = 4,
334 GLF_DEMOTE_IN_PROGRESS = 5,
335 GLF_DIRTY = 6,
336 GLF_LFLUSH = 7,
337 GLF_INVALIDATE_IN_PROGRESS = 8,
338 GLF_REPLY_PENDING = 9,
339 GLF_INITIAL = 10,
340 GLF_FROZEN = 11,
341 GLF_QUEUED = 12,
342 GLF_LRU = 13,
343 GLF_OBJECT = 14, /* Used only for tracing */
344 GLF_BLOCKING = 15,
345 GLF_INODE_CREATING = 16, /* Inode creation occurring */
346 };
347
348 struct gfs2_glock {
349 unsigned long gl_flags; /* GLF_... */
350 struct lm_lockname gl_name;
351
352 struct lockref gl_lockref;
353
354 /* State fields protected by gl_lockref.lock */
355 unsigned int gl_state:2, /* Current state */
356 gl_target:2, /* Target state */
357 gl_demote_state:2, /* State requested by remote node */
358 gl_req:2, /* State in last dlm request */
359 gl_reply:8; /* Last reply from the dlm */
360
361 unsigned long gl_demote_time; /* time of first demote request */
362 long gl_hold_time;
363 struct list_head gl_holders;
364
365 const struct gfs2_glock_operations *gl_ops;
366 ktime_t gl_dstamp;
367 struct gfs2_lkstats gl_stats;
368 struct dlm_lksb gl_lksb;
369 unsigned long gl_tchange;
370 void *gl_object;
371
372 struct list_head gl_lru;
373 struct list_head gl_ail_list;
374 atomic_t gl_ail_count;
375 atomic_t gl_revokes;
376 struct delayed_work gl_work;
377 union {
378 /* For inode and iopen glocks only */
379 struct work_struct gl_delete;
380 /* For rgrp glocks only */
381 struct {
382 loff_t start;
383 loff_t end;
384 } gl_vm;
385 };
386 struct rcu_head gl_rcu;
387 struct rhash_head gl_node;
388 };
389
390 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
391
392 enum {
393 GIF_INVALID = 0,
394 GIF_QD_LOCKED = 1,
395 GIF_ALLOC_FAILED = 2,
396 GIF_SW_PAGED = 3,
397 GIF_ORDERED = 4,
398 GIF_FREE_VFS_INODE = 5,
399 GIF_GLOP_PENDING = 6,
400 };
401
402 struct gfs2_inode {
403 struct inode i_inode;
404 u64 i_no_addr;
405 u64 i_no_formal_ino;
406 u64 i_generation;
407 u64 i_eattr;
408 unsigned long i_flags; /* GIF_... */
409 struct gfs2_glock *i_gl; /* Move into i_gh? */
410 struct gfs2_holder i_iopen_gh;
411 struct gfs2_holder i_gh; /* for prepare/commit_write only */
412 struct gfs2_qadata *i_qadata; /* quota allocation data */
413 struct gfs2_holder i_rgd_gh;
414 struct gfs2_blkreserv i_res; /* rgrp multi-block reservation */
415 u64 i_goal; /* goal block for allocations */
416 atomic_t i_sizehint; /* hint of the write size */
417 struct rw_semaphore i_rw_mutex;
418 struct list_head i_ordered;
419 struct list_head i_trunc_list;
420 __be64 *i_hash_cache;
421 u32 i_entries;
422 u32 i_diskflags;
423 u8 i_height;
424 u8 i_depth;
425 u16 i_rahead;
426 };
427
428 /*
429 * Since i_inode is the first element of struct gfs2_inode,
430 * this is effectively a cast.
431 */
GFS2_I(struct inode * inode)432 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
433 {
434 return container_of(inode, struct gfs2_inode, i_inode);
435 }
436
GFS2_SB(const struct inode * inode)437 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
438 {
439 return inode->i_sb->s_fs_info;
440 }
441
442 struct gfs2_file {
443 struct mutex f_fl_mutex;
444 struct gfs2_holder f_fl_gh;
445 };
446
447 struct gfs2_revoke_replay {
448 struct list_head rr_list;
449 u64 rr_blkno;
450 unsigned int rr_where;
451 };
452
453 enum {
454 QDF_CHANGE = 1,
455 QDF_LOCKED = 2,
456 QDF_REFRESH = 3,
457 QDF_QMSG_QUIET = 4,
458 };
459
460 struct gfs2_quota_data {
461 struct hlist_bl_node qd_hlist;
462 struct list_head qd_list;
463 struct kqid qd_id;
464 struct gfs2_sbd *qd_sbd;
465 struct lockref qd_lockref;
466 struct list_head qd_lru;
467 unsigned qd_hash;
468
469 unsigned long qd_flags; /* QDF_... */
470
471 s64 qd_change;
472 s64 qd_change_sync;
473
474 unsigned int qd_slot;
475 unsigned int qd_slot_count;
476
477 struct buffer_head *qd_bh;
478 struct gfs2_quota_change *qd_bh_qc;
479 unsigned int qd_bh_count;
480
481 struct gfs2_glock *qd_gl;
482 struct gfs2_quota_lvb qd_qb;
483
484 u64 qd_sync_gen;
485 unsigned long qd_last_warn;
486 struct rcu_head qd_rcu;
487 };
488
489 enum {
490 TR_TOUCHED = 1,
491 TR_ATTACHED = 2,
492 TR_ALLOCED = 3,
493 };
494
495 struct gfs2_trans {
496 unsigned long tr_ip;
497
498 unsigned int tr_blocks;
499 unsigned int tr_revokes;
500 unsigned int tr_reserved;
501 unsigned long tr_flags;
502
503 unsigned int tr_num_buf_new;
504 unsigned int tr_num_databuf_new;
505 unsigned int tr_num_buf_rm;
506 unsigned int tr_num_databuf_rm;
507 unsigned int tr_num_revoke;
508
509 struct list_head tr_list;
510 struct list_head tr_databuf;
511 struct list_head tr_buf;
512
513 unsigned int tr_first;
514 struct list_head tr_ail1_list;
515 struct list_head tr_ail2_list;
516 };
517
518 struct gfs2_journal_extent {
519 struct list_head list;
520
521 unsigned int lblock; /* First logical block */
522 u64 dblock; /* First disk block */
523 u64 blocks;
524 };
525
526 struct gfs2_jdesc {
527 struct list_head jd_list;
528 struct list_head extent_list;
529 unsigned int nr_extents;
530 struct work_struct jd_work;
531 struct inode *jd_inode;
532 unsigned long jd_flags;
533 #define JDF_RECOVERY 1
534 unsigned int jd_jid;
535 u32 jd_blocks;
536 int jd_recover_error;
537 /* Replay stuff */
538
539 unsigned int jd_found_blocks;
540 unsigned int jd_found_revokes;
541 unsigned int jd_replayed_blocks;
542
543 struct list_head jd_revoke_list;
544 unsigned int jd_replay_tail;
545
546 };
547
548 struct gfs2_statfs_change_host {
549 s64 sc_total;
550 s64 sc_free;
551 s64 sc_dinodes;
552 };
553
554 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
555 #define GFS2_QUOTA_OFF 0
556 #define GFS2_QUOTA_ACCOUNT 1
557 #define GFS2_QUOTA_ON 2
558
559 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
560 #define GFS2_DATA_WRITEBACK 1
561 #define GFS2_DATA_ORDERED 2
562
563 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
564 #define GFS2_ERRORS_WITHDRAW 0
565 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
566 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
567 #define GFS2_ERRORS_PANIC 3
568
569 struct gfs2_args {
570 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
571 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
572 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
573 unsigned int ar_spectator:1; /* Don't get a journal */
574 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
575 unsigned int ar_debug:1; /* Oops on errors */
576 unsigned int ar_posix_acl:1; /* Enable posix acls */
577 unsigned int ar_quota:2; /* off/account/on */
578 unsigned int ar_suiddir:1; /* suiddir support */
579 unsigned int ar_data:2; /* ordered/writeback */
580 unsigned int ar_meta:1; /* mount metafs */
581 unsigned int ar_discard:1; /* discard requests */
582 unsigned int ar_errors:2; /* errors=withdraw | panic */
583 unsigned int ar_nobarrier:1; /* do not send barriers */
584 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
585 unsigned int ar_loccookie:1; /* use location based readdir
586 cookies */
587 s32 ar_commit; /* Commit interval */
588 s32 ar_statfs_quantum; /* The fast statfs interval */
589 s32 ar_quota_quantum; /* The quota interval */
590 s32 ar_statfs_percent; /* The % change to force sync */
591 };
592
593 struct gfs2_tune {
594 spinlock_t gt_spin;
595
596 unsigned int gt_logd_secs;
597
598 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
599 unsigned int gt_quota_scale_num; /* Numerator */
600 unsigned int gt_quota_scale_den; /* Denominator */
601 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
602 unsigned int gt_new_files_jdata;
603 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
604 unsigned int gt_complain_secs;
605 unsigned int gt_statfs_quantum;
606 unsigned int gt_statfs_slow;
607 };
608
609 enum {
610 SDF_JOURNAL_CHECKED = 0,
611 SDF_JOURNAL_LIVE = 1,
612 SDF_WITHDRAWN = 2,
613 SDF_NOBARRIERS = 3,
614 SDF_NORECOVERY = 4,
615 SDF_DEMOTE = 5,
616 SDF_NOJOURNALID = 6,
617 SDF_RORECOVERY = 7, /* read only recovery */
618 SDF_SKIP_DLM_UNLOCK = 8,
619 SDF_FORCE_AIL_FLUSH = 9,
620 SDF_AIL1_IO_ERROR = 10,
621 SDF_FS_FROZEN = 11,
622 };
623
624 enum gfs2_freeze_state {
625 SFS_UNFROZEN = 0,
626 SFS_STARTING_FREEZE = 1,
627 SFS_FROZEN = 2,
628 };
629
630 #define GFS2_FSNAME_LEN 256
631
632 struct gfs2_inum_host {
633 u64 no_formal_ino;
634 u64 no_addr;
635 };
636
637 struct gfs2_sb_host {
638 u32 sb_magic;
639 u32 sb_type;
640 u32 sb_format;
641
642 u32 sb_fs_format;
643 u32 sb_multihost_format;
644 u32 sb_bsize;
645 u32 sb_bsize_shift;
646
647 struct gfs2_inum_host sb_master_dir;
648 struct gfs2_inum_host sb_root_dir;
649
650 char sb_lockproto[GFS2_LOCKNAME_LEN];
651 char sb_locktable[GFS2_LOCKNAME_LEN];
652 };
653
654 /*
655 * lm_mount() return values
656 *
657 * ls_jid - the journal ID this node should use
658 * ls_first - this node is the first to mount the file system
659 * ls_lockspace - lock module's context for this file system
660 * ls_ops - lock module's functions
661 */
662
663 struct lm_lockstruct {
664 int ls_jid;
665 unsigned int ls_first;
666 const struct lm_lockops *ls_ops;
667 dlm_lockspace_t *ls_dlm;
668
669 int ls_recover_jid_done; /* These two are deprecated, */
670 int ls_recover_jid_status; /* used previously by gfs_controld */
671
672 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
673 struct dlm_lksb ls_control_lksb; /* control_lock */
674 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
675 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
676 char *ls_lvb_bits;
677
678 spinlock_t ls_recover_spin; /* protects following fields */
679 unsigned long ls_recover_flags; /* DFL_ */
680 uint32_t ls_recover_mount; /* gen in first recover_done cb */
681 uint32_t ls_recover_start; /* gen in last recover_done cb */
682 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
683 uint32_t ls_recover_size; /* size of recover_submit, recover_result */
684 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
685 uint32_t *ls_recover_result; /* result of last jid recovery */
686 };
687
688 struct gfs2_pcpu_lkstats {
689 /* One struct for each glock type */
690 struct gfs2_lkstats lkstats[10];
691 };
692
693 struct gfs2_sbd {
694 struct super_block *sd_vfs;
695 struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
696 struct kobject sd_kobj;
697 unsigned long sd_flags; /* SDF_... */
698 struct gfs2_sb_host sd_sb;
699
700 /* Constants computed on mount */
701
702 u32 sd_fsb2bb;
703 u32 sd_fsb2bb_shift;
704 u32 sd_diptrs; /* Number of pointers in a dinode */
705 u32 sd_inptrs; /* Number of pointers in a indirect block */
706 u32 sd_jbsize; /* Size of a journaled data block */
707 u32 sd_hash_bsize; /* sizeof(exhash block) */
708 u32 sd_hash_bsize_shift;
709 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
710 u32 sd_qc_per_block;
711 u32 sd_blocks_per_bitmap;
712 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
713 u32 sd_max_height; /* Max height of a file's metadata tree */
714 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
715 u32 sd_max_dents_per_leaf; /* Max number of dirents in a leaf block */
716
717 struct gfs2_args sd_args; /* Mount arguments */
718 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
719
720 /* Lock Stuff */
721
722 struct lm_lockstruct sd_lockstruct;
723 struct gfs2_holder sd_live_gh;
724 struct gfs2_glock *sd_rename_gl;
725 struct gfs2_glock *sd_freeze_gl;
726 struct work_struct sd_freeze_work;
727 wait_queue_head_t sd_glock_wait;
728 wait_queue_head_t sd_async_glock_wait;
729 atomic_t sd_glock_disposal;
730 struct completion sd_locking_init;
731 struct completion sd_wdack;
732 struct delayed_work sd_control_work;
733
734 /* Inode Stuff */
735
736 struct dentry *sd_master_dir;
737 struct dentry *sd_root_dir;
738
739 struct inode *sd_jindex;
740 struct inode *sd_statfs_inode;
741 struct inode *sd_sc_inode;
742 struct inode *sd_qc_inode;
743 struct inode *sd_rindex;
744 struct inode *sd_quota_inode;
745
746 /* StatFS stuff */
747
748 spinlock_t sd_statfs_spin;
749 struct gfs2_statfs_change_host sd_statfs_master;
750 struct gfs2_statfs_change_host sd_statfs_local;
751 int sd_statfs_force_sync;
752
753 /* Resource group stuff */
754
755 int sd_rindex_uptodate;
756 spinlock_t sd_rindex_spin;
757 struct rb_root sd_rindex_tree;
758 unsigned int sd_rgrps;
759 unsigned int sd_max_rg_data;
760
761 /* Journal index stuff */
762
763 struct list_head sd_jindex_list;
764 spinlock_t sd_jindex_spin;
765 struct mutex sd_jindex_mutex;
766 unsigned int sd_journals;
767
768 struct gfs2_jdesc *sd_jdesc;
769 struct gfs2_holder sd_journal_gh;
770 struct gfs2_holder sd_jinode_gh;
771
772 struct gfs2_holder sd_sc_gh;
773 struct gfs2_holder sd_qc_gh;
774
775 struct completion sd_journal_ready;
776
777 /* Daemon stuff */
778
779 struct task_struct *sd_logd_process;
780 struct task_struct *sd_quotad_process;
781
782 /* Quota stuff */
783
784 struct list_head sd_quota_list;
785 atomic_t sd_quota_count;
786 struct mutex sd_quota_mutex;
787 struct mutex sd_quota_sync_mutex;
788 wait_queue_head_t sd_quota_wait;
789 struct list_head sd_trunc_list;
790 spinlock_t sd_trunc_lock;
791
792 unsigned int sd_quota_slots;
793 unsigned long *sd_quota_bitmap;
794 spinlock_t sd_bitmap_lock;
795
796 u64 sd_quota_sync_gen;
797
798 /* Log stuff */
799
800 struct address_space sd_aspace;
801
802 spinlock_t sd_log_lock;
803
804 struct gfs2_trans *sd_log_tr;
805 unsigned int sd_log_blks_reserved;
806 int sd_log_commited_revoke;
807
808 atomic_t sd_log_pinned;
809 unsigned int sd_log_num_revoke;
810
811 struct list_head sd_log_revokes;
812 struct list_head sd_log_ordered;
813 spinlock_t sd_ordered_lock;
814
815 atomic_t sd_log_thresh1;
816 atomic_t sd_log_thresh2;
817 atomic_t sd_log_blks_free;
818 atomic_t sd_log_blks_needed;
819 wait_queue_head_t sd_log_waitq;
820 wait_queue_head_t sd_logd_waitq;
821
822 u64 sd_log_sequence;
823 unsigned int sd_log_head;
824 unsigned int sd_log_tail;
825 int sd_log_idle;
826
827 struct rw_semaphore sd_log_flush_lock;
828 atomic_t sd_log_in_flight;
829 struct bio *sd_log_bio;
830 wait_queue_head_t sd_log_flush_wait;
831 int sd_log_error;
832
833 atomic_t sd_reserving_log;
834 wait_queue_head_t sd_reserving_log_wait;
835
836 unsigned int sd_log_flush_head;
837
838 spinlock_t sd_ail_lock;
839 struct list_head sd_ail1_list;
840 struct list_head sd_ail2_list;
841
842 /* For quiescing the filesystem */
843 struct gfs2_holder sd_freeze_gh;
844 atomic_t sd_freeze_state;
845 struct mutex sd_freeze_mutex;
846
847 char sd_fsname[GFS2_FSNAME_LEN + 3 * sizeof(int) + 2];
848 char sd_table_name[GFS2_FSNAME_LEN];
849 char sd_proto_name[GFS2_FSNAME_LEN];
850
851 /* Debugging crud */
852
853 unsigned long sd_last_warning;
854 struct dentry *debugfs_dir; /* debugfs directory */
855 };
856
gfs2_glstats_inc(struct gfs2_glock * gl,int which)857 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
858 {
859 gl->gl_stats.stats[which]++;
860 }
861
gfs2_sbstats_inc(const struct gfs2_glock * gl,int which)862 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
863 {
864 const struct gfs2_sbd *sdp = gl->gl_name.ln_sbd;
865 preempt_disable();
866 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
867 preempt_enable();
868 }
869
870 extern struct gfs2_rgrpd *gfs2_glock2rgrp(struct gfs2_glock *gl);
871
gfs2_max_stuffed_size(const struct gfs2_inode * ip)872 static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode *ip)
873 {
874 return GFS2_SB(&ip->i_inode)->sd_sb.sb_bsize - sizeof(struct gfs2_dinode);
875 }
876
877 #endif /* __INCORE_DOT_H__ */
878
879
