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 version 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;
27 struct gfs2_quota_data;
31 struct gfs2_gl_hash_bucket;
34 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
37 * Structure of operations that are associated with each
38 * type of element in the log.
41 struct gfs2_log_operations {
42 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
43 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
44 void (*lo_before_commit) (struct gfs2_sbd *sdp);
45 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
46 void (*lo_before_scan) (struct gfs2_jdesc *jd,
47 struct gfs2_log_header *head, int pass);
48 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
49 struct gfs2_log_descriptor *ld, __be64 *ptr,
51 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
55 struct gfs2_log_element {
56 struct list_head le_list;
57 const struct gfs2_log_operations *le_ops;
61 struct buffer_head *bi_bh;
69 struct list_head rd_list; /* Link with superblock */
70 struct list_head rd_list_mru;
71 struct list_head rd_recent; /* Recently used rgrps */
72 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
73 struct gfs2_rindex rd_ri;
74 struct gfs2_rgrp rd_rg;
76 struct gfs2_bitmap *rd_bits;
77 unsigned int rd_bh_count;
78 struct mutex rd_mutex;
80 struct gfs2_log_element rd_le;
81 u32 rd_last_alloc_data;
82 u32 rd_last_alloc_meta;
83 struct gfs2_sbd *rd_sbd;
86 enum gfs2_state_bits {
87 BH_Pinned = BH_PrivateStart,
88 BH_Escaped = BH_PrivateStart + 1,
91 BUFFER_FNS(Pinned, pinned)
92 TAS_BUFFER_FNS(Pinned, pinned)
93 BUFFER_FNS(Escaped, escaped)
94 TAS_BUFFER_FNS(Escaped, escaped)
97 struct buffer_head *bd_bh;
98 struct gfs2_glock *bd_gl;
100 struct list_head bd_list_tr;
101 struct gfs2_log_element bd_le;
103 struct gfs2_ail *bd_ail;
104 struct list_head bd_ail_st_list;
105 struct list_head bd_ail_gl_list;
108 struct gfs2_glock_operations {
109 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
111 void (*go_xmote_bh) (struct gfs2_glock * gl);
112 void (*go_drop_th) (struct gfs2_glock * gl);
113 void (*go_drop_bh) (struct gfs2_glock * gl);
114 void (*go_sync) (struct gfs2_glock * gl, int flags);
115 void (*go_inval) (struct gfs2_glock * gl, int flags);
116 int (*go_demote_ok) (struct gfs2_glock * gl);
117 int (*go_lock) (struct gfs2_holder * gh);
118 void (*go_unlock) (struct gfs2_holder * gh);
119 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
120 void (*go_greedy) (struct gfs2_glock * gl);
140 struct list_head gh_list;
142 struct gfs2_glock *gh_gl;
143 struct task_struct *gh_owner;
144 unsigned int gh_state;
148 unsigned long gh_iflags;
149 struct completion gh_wait;
159 GLF_SKIP_WAITERS2 = 6,
164 struct list_head gl_list;
165 unsigned long gl_flags; /* GLF_... */
166 struct lm_lockname gl_name;
171 unsigned int gl_state;
172 struct task_struct *gl_owner;
174 struct list_head gl_holders;
175 struct list_head gl_waiters1; /* HIF_MUTEX */
176 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
177 struct list_head gl_waiters3; /* HIF_PROMOTE */
179 const struct gfs2_glock_operations *gl_ops;
181 struct gfs2_holder *gl_req_gh;
182 gfs2_glop_bh_t gl_req_bh;
186 atomic_t gl_lvb_count;
189 unsigned long gl_stamp;
192 struct gfs2_gl_hash_bucket *gl_bucket;
193 struct list_head gl_reclaim;
195 struct gfs2_sbd *gl_sbd;
197 struct inode *gl_aspace;
198 struct gfs2_log_element gl_le;
199 struct list_head gl_ail_list;
200 atomic_t gl_ail_count;
206 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
207 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
208 unsigned int al_qd_num;
210 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
211 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
213 /* Filled in by gfs2_inplace_reserve() */
215 unsigned int al_line;
217 struct gfs2_holder al_ri_gh;
218 struct gfs2_holder al_rgd_gh;
219 struct gfs2_rgrpd *al_rgd;
230 struct inode i_inode;
231 struct gfs2_inum i_num;
233 unsigned long i_flags; /* GIF_... */
236 struct gfs2_dinode i_di; /* To be replaced by ref to block */
238 struct gfs2_glock *i_gl; /* Move into i_gh? */
239 struct gfs2_holder i_iopen_gh;
240 struct gfs2_holder i_gh; /* for prepare/commit_write only */
241 struct gfs2_alloc i_alloc;
245 struct rw_semaphore i_rw_mutex;
246 unsigned int i_greedy;
247 unsigned long i_last_pfault;
249 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
253 * Since i_inode is the first element of struct gfs2_inode,
254 * this is effectively a cast.
256 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
258 return container_of(inode, struct gfs2_inode, i_inode);
262 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
264 return inode->i_sb->s_fs_info;
268 GFF_DID_DIRECT_ALLOC = 0,
273 unsigned long f_flags; /* GFF_... */
274 struct mutex f_fl_mutex;
275 struct gfs2_holder f_fl_gh;
279 struct gfs2_log_element rv_le;
283 struct gfs2_revoke_replay {
284 struct list_head rr_list;
286 unsigned int rr_where;
295 struct gfs2_quota_lvb {
298 __be64 qb_limit; /* Hard limit of # blocks to alloc */
299 __be64 qb_warn; /* Warn user when alloc is above this # */
300 __be64 qb_value; /* Current # blocks allocated */
303 struct gfs2_quota_data {
304 struct list_head qd_list;
305 unsigned int qd_count;
308 unsigned long qd_flags; /* QDF_... */
313 unsigned int qd_slot;
314 unsigned int qd_slot_count;
316 struct buffer_head *qd_bh;
317 struct gfs2_quota_change *qd_bh_qc;
318 unsigned int qd_bh_count;
320 struct gfs2_glock *qd_gl;
321 struct gfs2_quota_lvb qd_qb;
324 unsigned long qd_last_warn;
325 unsigned long qd_last_touched;
328 struct gfs2_log_buf {
329 struct list_head lb_list;
330 struct buffer_head *lb_bh;
331 struct buffer_head *lb_real;
337 unsigned int tr_blocks;
338 unsigned int tr_revokes;
339 unsigned int tr_reserved;
341 struct gfs2_holder tr_t_gh;
345 unsigned int tr_num_buf;
346 unsigned int tr_num_buf_new;
347 unsigned int tr_num_buf_rm;
348 struct list_head tr_list_buf;
350 unsigned int tr_num_revoke;
351 unsigned int tr_num_revoke_rm;
355 struct list_head ai_list;
357 unsigned int ai_first;
358 struct list_head ai_ail1_list;
359 struct list_head ai_ail2_list;
365 struct list_head jd_list;
367 struct inode *jd_inode;
371 unsigned int jd_blocks;
374 #define GFS2_GLOCKD_DEFAULT 1
375 #define GFS2_GLOCKD_MAX 16
377 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
378 #define GFS2_QUOTA_OFF 0
379 #define GFS2_QUOTA_ACCOUNT 1
380 #define GFS2_QUOTA_ON 2
382 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
383 #define GFS2_DATA_WRITEBACK 1
384 #define GFS2_DATA_ORDERED 2
387 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
388 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
389 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
390 int ar_spectator; /* Don't get a journal because we're always RO */
391 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
392 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
393 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
394 int ar_debug; /* Oops on errors instead of trying to be graceful */
395 int ar_upgrade; /* Upgrade ondisk/multihost format */
396 unsigned int ar_num_glockd; /* Number of glockd threads */
397 int ar_posix_acl; /* Enable posix acls */
398 int ar_quota; /* off/account/on */
399 int ar_suiddir; /* suiddir support */
400 int ar_data; /* ordered/writeback */
406 unsigned int gt_ilimit;
407 unsigned int gt_ilimit_tries;
408 unsigned int gt_ilimit_min;
409 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
410 unsigned int gt_incore_log_blocks;
411 unsigned int gt_log_flush_secs;
412 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
414 unsigned int gt_scand_secs;
415 unsigned int gt_recoverd_secs;
416 unsigned int gt_logd_secs;
417 unsigned int gt_quotad_secs;
419 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
420 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
421 unsigned int gt_quota_scale_num; /* Numerator */
422 unsigned int gt_quota_scale_den; /* Denominator */
423 unsigned int gt_quota_cache_secs;
424 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
425 unsigned int gt_atime_quantum; /* Min secs between atime updates */
426 unsigned int gt_new_files_jdata;
427 unsigned int gt_new_files_directio;
428 unsigned int gt_max_atomic_write; /* Split big writes into this size */
429 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
430 unsigned int gt_lockdump_size;
431 unsigned int gt_stall_secs; /* Detects trouble! */
432 unsigned int gt_complain_secs;
433 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
434 unsigned int gt_entries_per_readdir;
435 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
436 unsigned int gt_greedy_default;
437 unsigned int gt_greedy_quantum;
438 unsigned int gt_greedy_max;
439 unsigned int gt_statfs_quantum;
440 unsigned int gt_statfs_slow;
443 struct gfs2_gl_hash_bucket {
445 struct list_head hb_list;
449 SDF_JOURNAL_CHECKED = 0,
450 SDF_JOURNAL_LIVE = 1,
455 #define GFS2_GL_HASH_SHIFT 13
456 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
457 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
458 #define GFS2_FSNAME_LEN 256
461 struct super_block *sd_vfs;
462 struct super_block *sd_vfs_meta;
463 struct kobject sd_kobj;
464 unsigned long sd_flags; /* SDF_... */
465 struct gfs2_sb sd_sb;
467 /* Constants computed on mount */
471 u32 sd_diptrs; /* Number of pointers in a dinode */
472 u32 sd_inptrs; /* Number of pointers in a indirect block */
473 u32 sd_jbsize; /* Size of a journaled data block */
474 u32 sd_hash_bsize; /* sizeof(exhash block) */
475 u32 sd_hash_bsize_shift;
476 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
478 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
479 u32 sd_max_height; /* Max height of a file's metadata tree */
480 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
481 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
482 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
484 struct gfs2_args sd_args; /* Mount arguments */
485 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
489 struct lm_lockstruct sd_lockstruct;
490 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
491 struct list_head sd_reclaim_list;
492 spinlock_t sd_reclaim_lock;
493 wait_queue_head_t sd_reclaim_wq;
494 atomic_t sd_reclaim_count;
495 struct gfs2_holder sd_live_gh;
496 struct gfs2_glock *sd_rename_gl;
497 struct gfs2_glock *sd_trans_gl;
501 struct inode *sd_master_dir;
502 struct inode *sd_jindex;
503 struct inode *sd_inum_inode;
504 struct inode *sd_statfs_inode;
505 struct inode *sd_ir_inode;
506 struct inode *sd_sc_inode;
507 struct inode *sd_qc_inode;
508 struct inode *sd_rindex;
509 struct inode *sd_quota_inode;
513 struct mutex sd_inum_mutex;
517 spinlock_t sd_statfs_spin;
518 struct mutex sd_statfs_mutex;
519 struct gfs2_statfs_change sd_statfs_master;
520 struct gfs2_statfs_change sd_statfs_local;
521 unsigned long sd_statfs_sync_time;
523 /* Resource group stuff */
526 spinlock_t sd_rindex_spin;
527 struct mutex sd_rindex_mutex;
528 struct list_head sd_rindex_list;
529 struct list_head sd_rindex_mru_list;
530 struct list_head sd_rindex_recent_list;
531 struct gfs2_rgrpd *sd_rindex_forward;
532 unsigned int sd_rgrps;
534 /* Journal index stuff */
536 struct list_head sd_jindex_list;
537 spinlock_t sd_jindex_spin;
538 struct mutex sd_jindex_mutex;
539 unsigned int sd_journals;
540 unsigned long sd_jindex_refresh_time;
542 struct gfs2_jdesc *sd_jdesc;
543 struct gfs2_holder sd_journal_gh;
544 struct gfs2_holder sd_jinode_gh;
546 struct gfs2_holder sd_ir_gh;
547 struct gfs2_holder sd_sc_gh;
548 struct gfs2_holder sd_qc_gh;
552 struct task_struct *sd_scand_process;
553 struct task_struct *sd_recoverd_process;
554 struct task_struct *sd_logd_process;
555 struct task_struct *sd_quotad_process;
556 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
557 unsigned int sd_glockd_num;
561 struct list_head sd_quota_list;
562 atomic_t sd_quota_count;
563 spinlock_t sd_quota_spin;
564 struct mutex sd_quota_mutex;
566 unsigned int sd_quota_slots;
567 unsigned int sd_quota_chunks;
568 unsigned char **sd_quota_bitmap;
570 u64 sd_quota_sync_gen;
571 unsigned long sd_quota_sync_time;
575 spinlock_t sd_log_lock;
577 unsigned int sd_log_blks_reserved;
578 unsigned int sd_log_commited_buf;
579 unsigned int sd_log_commited_revoke;
581 unsigned int sd_log_num_gl;
582 unsigned int sd_log_num_buf;
583 unsigned int sd_log_num_revoke;
584 unsigned int sd_log_num_rg;
585 unsigned int sd_log_num_databuf;
586 unsigned int sd_log_num_jdata;
587 unsigned int sd_log_num_hdrs;
589 struct list_head sd_log_le_gl;
590 struct list_head sd_log_le_buf;
591 struct list_head sd_log_le_revoke;
592 struct list_head sd_log_le_rg;
593 struct list_head sd_log_le_databuf;
595 unsigned int sd_log_blks_free;
596 struct mutex sd_log_reserve_mutex;
599 unsigned int sd_log_head;
600 unsigned int sd_log_tail;
603 unsigned long sd_log_flush_time;
604 struct rw_semaphore sd_log_flush_lock;
605 struct list_head sd_log_flush_list;
607 unsigned int sd_log_flush_head;
608 u64 sd_log_flush_wrapped;
610 struct list_head sd_ail1_list;
611 struct list_head sd_ail2_list;
616 struct list_head sd_revoke_list;
617 unsigned int sd_replay_tail;
619 unsigned int sd_found_blocks;
620 unsigned int sd_found_revokes;
621 unsigned int sd_replayed_blocks;
623 /* For quiescing the filesystem */
625 struct gfs2_holder sd_freeze_gh;
626 struct mutex sd_freeze_lock;
627 unsigned int sd_freeze_count;
631 atomic_t sd_glock_count;
632 atomic_t sd_glock_held_count;
633 atomic_t sd_inode_count;
634 atomic_t sd_reclaimed;
636 char sd_fsname[GFS2_FSNAME_LEN];
637 char sd_table_name[GFS2_FSNAME_LEN];
638 char sd_proto_name[GFS2_FSNAME_LEN];
642 unsigned long sd_last_warning;
643 struct vfsmount *sd_gfs2mnt;
646 #endif /* __INCORE_DOT_H__ */