2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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 v.2.
10 #ifndef __INCORE_DOT_H__
11 #define __INCORE_DOT_H__
13 #define DIO_FORCE 0x00000001
14 #define DIO_CLEAN 0x00000002
15 #define DIO_DIRTY 0x00000004
16 #define DIO_START 0x00000008
17 #define DIO_WAIT 0x00000010
18 #define DIO_METADATA 0x00000020
19 #define DIO_DATA 0x00000040
20 #define DIO_RELEASE 0x00000080
21 #define DIO_ALL 0x00000100
23 struct gfs2_log_operations;
24 struct gfs2_log_element;
28 struct gfs2_glock_operations;
35 struct gfs2_revoke_replay;
36 struct gfs2_quota_data;
43 struct gfs2_gl_hash_bucket;
46 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
49 * Structure of operations that are associated with each
50 * type of element in the log.
53 struct gfs2_log_operations {
54 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
55 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
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 *head, int pass);
60 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
61 struct gfs2_log_descriptor *ld, __be64 *ptr,
63 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
67 struct gfs2_log_element {
68 struct list_head le_list;
69 const struct gfs2_log_operations *le_ops;
73 struct buffer_head *bi_bh;
81 struct list_head rd_list; /* Link with superblock */
82 struct list_head rd_list_mru;
83 struct list_head rd_recent; /* Recently used rgrps */
84 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
85 struct gfs2_rindex rd_ri;
86 struct gfs2_rgrp rd_rg;
88 struct gfs2_bitmap *rd_bits;
89 unsigned int rd_bh_count;
90 struct mutex rd_mutex;
91 uint32_t rd_free_clone;
92 struct gfs2_log_element rd_le;
93 uint32_t rd_last_alloc_data;
94 uint32_t rd_last_alloc_meta;
95 struct gfs2_sbd *rd_sbd;
98 enum gfs2_state_bits {
99 BH_Pinned = BH_PrivateStart,
100 BH_Escaped = BH_PrivateStart + 1,
103 BUFFER_FNS(Pinned, pinned)
104 TAS_BUFFER_FNS(Pinned, pinned)
105 BUFFER_FNS(Escaped, escaped)
106 TAS_BUFFER_FNS(Escaped, escaped)
108 struct gfs2_bufdata {
109 struct buffer_head *bd_bh;
110 struct gfs2_glock *bd_gl;
112 struct list_head bd_list_tr;
113 struct gfs2_log_element bd_le;
115 struct gfs2_ail *bd_ail;
116 struct list_head bd_ail_st_list;
117 struct list_head bd_ail_gl_list;
120 struct gfs2_glock_operations {
121 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
123 void (*go_xmote_bh) (struct gfs2_glock * gl);
124 void (*go_drop_th) (struct gfs2_glock * gl);
125 void (*go_drop_bh) (struct gfs2_glock * gl);
126 void (*go_sync) (struct gfs2_glock * gl, int flags);
127 void (*go_inval) (struct gfs2_glock * gl, int flags);
128 int (*go_demote_ok) (struct gfs2_glock * gl);
129 int (*go_lock) (struct gfs2_holder * gh);
130 void (*go_unlock) (struct gfs2_holder * gh);
131 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
132 void (*go_greedy) (struct gfs2_glock * gl);
152 struct list_head gh_list;
154 struct gfs2_glock *gh_gl;
155 struct task_struct *gh_owner;
156 unsigned int gh_state;
160 unsigned long gh_iflags;
161 struct completion gh_wait;
172 GLF_SKIP_WAITERS2 = 6,
177 struct list_head gl_list;
178 unsigned long gl_flags; /* GLF_... */
179 struct lm_lockname gl_name;
184 unsigned int gl_state;
185 struct task_struct *gl_owner;
187 struct list_head gl_holders;
188 struct list_head gl_waiters1; /* HIF_MUTEX */
189 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
190 struct list_head gl_waiters3; /* HIF_PROMOTE */
192 struct gfs2_glock_operations *gl_ops;
194 struct gfs2_holder *gl_req_gh;
195 gfs2_glop_bh_t gl_req_bh;
199 atomic_t gl_lvb_count;
202 unsigned long gl_stamp;
205 struct gfs2_gl_hash_bucket *gl_bucket;
206 struct list_head gl_reclaim;
208 struct gfs2_sbd *gl_sbd;
210 struct inode *gl_aspace;
211 struct gfs2_log_element gl_le;
212 struct list_head gl_ail_list;
213 atomic_t gl_ail_count;
219 struct gfs2_quota_data *al_qd[4];
220 struct gfs2_holder al_qd_ghs[4];
221 unsigned int al_qd_num;
223 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
224 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
226 /* Filled in by gfs2_inplace_reserve() */
228 unsigned int al_line;
230 struct gfs2_holder al_ri_gh;
231 struct gfs2_holder al_rgd_gh;
232 struct gfs2_rgrpd *al_rgd;
243 struct inode i_inode;
244 struct gfs2_inum i_num;
246 unsigned long i_flags; /* GIF_... */
249 struct gfs2_dinode i_di; /* To be replaced by ref to block */
251 struct gfs2_glock *i_gl; /* Move into i_gh? */
252 struct gfs2_holder i_iopen_gh;
253 struct gfs2_holder i_gh; /* for prepare/commit_write only */
254 struct gfs2_alloc i_alloc;
255 uint64_t i_last_rg_alloc;
258 struct rw_semaphore i_rw_mutex;
259 unsigned int i_greedy;
260 unsigned long i_last_pfault;
262 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
266 * Since i_inode is the first element of struct gfs2_inode,
267 * this is effectively a cast.
269 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
271 return container_of(inode, struct gfs2_inode, i_inode);
275 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
277 return inode->i_sb->s_fs_info;
281 GFF_DID_DIRECT_ALLOC = 0,
285 unsigned long f_flags; /* GFF_... */
286 struct mutex f_fl_mutex;
287 struct gfs2_holder f_fl_gh;
291 struct gfs2_log_element rv_le;
295 struct gfs2_revoke_replay {
296 struct list_head rr_list;
298 unsigned int rr_where;
307 struct gfs2_quota_lvb {
310 uint64_t qb_limit; /* Hard limit of # blocks to alloc */
311 uint64_t qb_warn; /* Warn user when alloc is above this # */
312 int64_t qb_value; /* Current # blocks allocated */
315 struct gfs2_quota_data {
316 struct list_head qd_list;
317 unsigned int qd_count;
320 unsigned long qd_flags; /* QDF_... */
323 int64_t qd_change_sync;
325 unsigned int qd_slot;
326 unsigned int qd_slot_count;
328 struct buffer_head *qd_bh;
329 struct gfs2_quota_change *qd_bh_qc;
330 unsigned int qd_bh_count;
332 struct gfs2_glock *qd_gl;
333 struct gfs2_quota_lvb qd_qb;
335 uint64_t qd_sync_gen;
336 unsigned long qd_last_warn;
337 unsigned long qd_last_touched;
340 struct gfs2_log_buf {
341 struct list_head lb_list;
342 struct buffer_head *lb_bh;
343 struct buffer_head *lb_real;
349 unsigned int tr_blocks;
350 unsigned int tr_revokes;
351 unsigned int tr_reserved;
353 struct gfs2_holder tr_t_gh;
357 unsigned int tr_num_buf;
358 unsigned int tr_num_buf_new;
359 unsigned int tr_num_buf_rm;
360 struct list_head tr_list_buf;
362 unsigned int tr_num_revoke;
363 unsigned int tr_num_revoke_rm;
367 struct list_head ai_list;
369 unsigned int ai_first;
370 struct list_head ai_ail1_list;
371 struct list_head ai_ail2_list;
373 uint64_t ai_sync_gen;
377 struct list_head jd_list;
379 struct inode *jd_inode;
383 unsigned int jd_blocks;
386 #define GFS2_GLOCKD_DEFAULT 1
387 #define GFS2_GLOCKD_MAX 16
389 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
390 #define GFS2_QUOTA_OFF 0
391 #define GFS2_QUOTA_ACCOUNT 1
392 #define GFS2_QUOTA_ON 2
394 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
395 #define GFS2_DATA_WRITEBACK 1
396 #define GFS2_DATA_ORDERED 2
399 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
400 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
401 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
402 int ar_spectator; /* Don't get a journal because we're always RO */
403 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
404 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
405 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
406 int ar_debug; /* Oops on errors instead of trying to be graceful */
407 int ar_upgrade; /* Upgrade ondisk/multihost format */
408 unsigned int ar_num_glockd; /* Number of glockd threads */
409 int ar_posix_acl; /* Enable posix acls */
410 int ar_quota; /* off/account/on */
411 int ar_suiddir; /* suiddir support */
412 int ar_data; /* ordered/writeback */
418 unsigned int gt_ilimit;
419 unsigned int gt_ilimit_tries;
420 unsigned int gt_ilimit_min;
421 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
422 unsigned int gt_incore_log_blocks;
423 unsigned int gt_log_flush_secs;
424 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
426 unsigned int gt_scand_secs;
427 unsigned int gt_recoverd_secs;
428 unsigned int gt_logd_secs;
429 unsigned int gt_quotad_secs;
431 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
432 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
433 unsigned int gt_quota_scale_num; /* Numerator */
434 unsigned int gt_quota_scale_den; /* Denominator */
435 unsigned int gt_quota_cache_secs;
436 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
437 unsigned int gt_atime_quantum; /* Min secs between atime updates */
438 unsigned int gt_new_files_jdata;
439 unsigned int gt_new_files_directio;
440 unsigned int gt_max_atomic_write; /* Split big writes into this size */
441 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
442 unsigned int gt_lockdump_size;
443 unsigned int gt_stall_secs; /* Detects trouble! */
444 unsigned int gt_complain_secs;
445 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
446 unsigned int gt_entries_per_readdir;
447 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
448 unsigned int gt_greedy_default;
449 unsigned int gt_greedy_quantum;
450 unsigned int gt_greedy_max;
451 unsigned int gt_statfs_quantum;
452 unsigned int gt_statfs_slow;
455 struct gfs2_gl_hash_bucket {
457 struct list_head hb_list;
461 SDF_JOURNAL_CHECKED = 0,
462 SDF_JOURNAL_LIVE = 1,
467 #define GFS2_GL_HASH_SHIFT 13
468 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
469 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
470 #define GFS2_FSNAME_LEN 256
473 struct super_block *sd_vfs;
474 struct kobject sd_kobj;
475 unsigned long sd_flags; /* SDF_... */
476 struct gfs2_sb sd_sb;
478 /* Constants computed on mount */
481 uint32_t sd_fsb2bb_shift;
482 uint32_t sd_diptrs; /* Number of pointers in a dinode */
483 uint32_t sd_inptrs; /* Number of pointers in a indirect block */
484 uint32_t sd_jbsize; /* Size of a journaled data block */
485 uint32_t sd_hash_bsize; /* sizeof(exhash block) */
486 uint32_t sd_hash_bsize_shift;
487 uint32_t sd_hash_ptrs; /* Number of pointers in a hash block */
488 uint32_t sd_qc_per_block;
489 uint32_t sd_max_dirres; /* Max blocks needed to add a directory entry */
490 uint32_t sd_max_height; /* Max height of a file's metadata tree */
491 uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
492 uint32_t sd_max_jheight; /* Max height of journaled file's meta tree */
493 uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
495 struct gfs2_args sd_args; /* Mount arguments */
496 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
500 struct lm_lockstruct sd_lockstruct;
501 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
502 struct list_head sd_reclaim_list;
503 spinlock_t sd_reclaim_lock;
504 wait_queue_head_t sd_reclaim_wq;
505 atomic_t sd_reclaim_count;
506 struct gfs2_holder sd_live_gh;
507 struct gfs2_glock *sd_rename_gl;
508 struct gfs2_glock *sd_trans_gl;
509 struct mutex sd_invalidate_inodes_mutex;
513 struct inode *sd_master_dir;
514 struct inode *sd_jindex;
515 struct inode *sd_inum_inode;
516 struct inode *sd_statfs_inode;
517 struct inode *sd_ir_inode;
518 struct inode *sd_sc_inode;
519 struct inode *sd_qc_inode;
520 struct inode *sd_rindex;
521 struct inode *sd_quota_inode;
525 struct mutex sd_inum_mutex;
529 spinlock_t sd_statfs_spin;
530 struct mutex sd_statfs_mutex;
531 struct gfs2_statfs_change sd_statfs_master;
532 struct gfs2_statfs_change sd_statfs_local;
533 unsigned long sd_statfs_sync_time;
535 /* Resource group stuff */
537 uint64_t sd_rindex_vn;
538 spinlock_t sd_rindex_spin;
539 struct mutex sd_rindex_mutex;
540 struct list_head sd_rindex_list;
541 struct list_head sd_rindex_mru_list;
542 struct list_head sd_rindex_recent_list;
543 struct gfs2_rgrpd *sd_rindex_forward;
544 unsigned int sd_rgrps;
546 /* Journal index stuff */
548 struct list_head sd_jindex_list;
549 spinlock_t sd_jindex_spin;
550 struct mutex sd_jindex_mutex;
551 unsigned int sd_journals;
552 unsigned long sd_jindex_refresh_time;
554 struct gfs2_jdesc *sd_jdesc;
555 struct gfs2_holder sd_journal_gh;
556 struct gfs2_holder sd_jinode_gh;
558 struct gfs2_holder sd_ir_gh;
559 struct gfs2_holder sd_sc_gh;
560 struct gfs2_holder sd_qc_gh;
564 struct task_struct *sd_scand_process;
565 struct task_struct *sd_recoverd_process;
566 struct task_struct *sd_logd_process;
567 struct task_struct *sd_quotad_process;
568 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
569 unsigned int sd_glockd_num;
573 struct list_head sd_quota_list;
574 atomic_t sd_quota_count;
575 spinlock_t sd_quota_spin;
576 struct mutex sd_quota_mutex;
578 unsigned int sd_quota_slots;
579 unsigned int sd_quota_chunks;
580 unsigned char **sd_quota_bitmap;
582 uint64_t sd_quota_sync_gen;
583 unsigned long sd_quota_sync_time;
587 spinlock_t sd_log_lock;
589 unsigned int sd_log_blks_reserved;
590 unsigned int sd_log_commited_buf;
591 unsigned int sd_log_commited_revoke;
593 unsigned int sd_log_num_gl;
594 unsigned int sd_log_num_buf;
595 unsigned int sd_log_num_revoke;
596 unsigned int sd_log_num_rg;
597 unsigned int sd_log_num_databuf;
598 unsigned int sd_log_num_jdata;
599 unsigned int sd_log_num_hdrs;
601 struct list_head sd_log_le_gl;
602 struct list_head sd_log_le_buf;
603 struct list_head sd_log_le_revoke;
604 struct list_head sd_log_le_rg;
605 struct list_head sd_log_le_databuf;
607 unsigned int sd_log_blks_free;
608 struct mutex sd_log_reserve_mutex;
610 uint64_t sd_log_sequence;
611 unsigned int sd_log_head;
612 unsigned int sd_log_tail;
615 unsigned long sd_log_flush_time;
616 struct rw_semaphore sd_log_flush_lock;
617 struct list_head sd_log_flush_list;
619 unsigned int sd_log_flush_head;
620 uint64_t sd_log_flush_wrapped;
622 struct list_head sd_ail1_list;
623 struct list_head sd_ail2_list;
624 uint64_t sd_ail_sync_gen;
628 struct list_head sd_revoke_list;
629 unsigned int sd_replay_tail;
631 unsigned int sd_found_blocks;
632 unsigned int sd_found_revokes;
633 unsigned int sd_replayed_blocks;
635 /* For quiescing the filesystem */
637 struct gfs2_holder sd_freeze_gh;
638 struct mutex sd_freeze_lock;
639 unsigned int sd_freeze_count;
643 atomic_t sd_glock_count;
644 atomic_t sd_glock_held_count;
645 atomic_t sd_inode_count;
646 atomic_t sd_reclaimed;
648 char sd_fsname[GFS2_FSNAME_LEN];
649 char sd_table_name[GFS2_FSNAME_LEN];
650 char sd_proto_name[GFS2_FSNAME_LEN];
654 unsigned long sd_last_warning;
657 #endif /* __INCORE_DOT_H__ */