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__
15 #define DIO_FORCE 0x00000001
16 #define DIO_CLEAN 0x00000002
17 #define DIO_DIRTY 0x00000004
18 #define DIO_START 0x00000008
19 #define DIO_WAIT 0x00000010
20 #define DIO_METADATA 0x00000020
21 #define DIO_DATA 0x00000040
22 #define DIO_RELEASE 0x00000080
23 #define DIO_ALL 0x00000100
25 struct gfs2_log_operations;
26 struct gfs2_log_element;
29 struct gfs2_quota_data;
35 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
38 * Structure of operations that are associated with each
39 * type of element in the log.
42 struct gfs2_log_operations {
43 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
44 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
45 void (*lo_before_commit) (struct gfs2_sbd *sdp);
46 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
47 void (*lo_before_scan) (struct gfs2_jdesc *jd,
48 struct gfs2_log_header *head, int pass);
49 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
50 struct gfs2_log_descriptor *ld, __be64 *ptr,
52 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
56 struct gfs2_log_element {
57 struct list_head le_list;
58 const struct gfs2_log_operations *le_ops;
62 struct buffer_head *bi_bh;
70 struct list_head rd_list; /* Link with superblock */
71 struct list_head rd_list_mru;
72 struct list_head rd_recent; /* Recently used rgrps */
73 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
74 struct gfs2_rindex rd_ri;
75 struct gfs2_rgrp rd_rg;
77 struct gfs2_bitmap *rd_bits;
78 unsigned int rd_bh_count;
79 struct mutex rd_mutex;
81 struct gfs2_log_element rd_le;
82 u32 rd_last_alloc_data;
83 u32 rd_last_alloc_meta;
84 struct gfs2_sbd *rd_sbd;
87 enum gfs2_state_bits {
88 BH_Pinned = BH_PrivateStart,
89 BH_Escaped = BH_PrivateStart + 1,
92 BUFFER_FNS(Pinned, pinned)
93 TAS_BUFFER_FNS(Pinned, pinned)
94 BUFFER_FNS(Escaped, escaped)
95 TAS_BUFFER_FNS(Escaped, escaped)
98 struct buffer_head *bd_bh;
99 struct gfs2_glock *bd_gl;
101 struct list_head bd_list_tr;
102 struct gfs2_log_element bd_le;
104 struct gfs2_ail *bd_ail;
105 struct list_head bd_ail_st_list;
106 struct list_head bd_ail_gl_list;
109 struct gfs2_gl_hash_bucket {
111 struct list_head hb_list;
114 struct gfs2_glock_operations {
115 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
117 void (*go_xmote_bh) (struct gfs2_glock * gl);
118 void (*go_drop_th) (struct gfs2_glock * gl);
119 void (*go_drop_bh) (struct gfs2_glock * gl);
120 void (*go_sync) (struct gfs2_glock * gl, int flags);
121 void (*go_inval) (struct gfs2_glock * gl, int flags);
122 int (*go_demote_ok) (struct gfs2_glock * gl);
123 int (*go_lock) (struct gfs2_holder * gh);
124 void (*go_unlock) (struct gfs2_holder * gh);
125 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
126 void (*go_greedy) (struct gfs2_glock * gl);
146 struct list_head gh_list;
148 struct gfs2_glock *gh_gl;
149 struct task_struct *gh_owner;
150 unsigned int gh_state;
154 unsigned long gh_iflags;
155 struct completion gh_wait;
165 GLF_SKIP_WAITERS2 = 6,
170 struct list_head gl_list;
171 unsigned long gl_flags; /* GLF_... */
172 struct lm_lockname gl_name;
177 unsigned int gl_state;
178 struct task_struct *gl_owner;
180 struct list_head gl_holders;
181 struct list_head gl_waiters1; /* HIF_MUTEX */
182 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
183 struct list_head gl_waiters3; /* HIF_PROMOTE */
185 const struct gfs2_glock_operations *gl_ops;
187 struct gfs2_holder *gl_req_gh;
188 gfs2_glop_bh_t gl_req_bh;
192 atomic_t gl_lvb_count;
195 unsigned long gl_stamp;
198 struct gfs2_gl_hash_bucket *gl_bucket;
199 struct list_head gl_reclaim;
201 struct gfs2_sbd *gl_sbd;
203 struct inode *gl_aspace;
204 struct gfs2_log_element gl_le;
205 struct list_head gl_ail_list;
206 atomic_t gl_ail_count;
212 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
213 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
214 unsigned int al_qd_num;
216 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
217 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
219 /* Filled in by gfs2_inplace_reserve() */
221 unsigned int al_line;
223 struct gfs2_holder al_ri_gh;
224 struct gfs2_holder al_rgd_gh;
225 struct gfs2_rgrpd *al_rgd;
236 struct inode i_inode;
237 struct gfs2_inum i_num;
239 unsigned long i_flags; /* GIF_... */
242 struct gfs2_dinode i_di; /* To be replaced by ref to block */
244 struct gfs2_glock *i_gl; /* Move into i_gh? */
245 struct gfs2_holder i_iopen_gh;
246 struct gfs2_holder i_gh; /* for prepare/commit_write only */
247 struct gfs2_alloc i_alloc;
251 struct rw_semaphore i_rw_mutex;
252 unsigned int i_greedy;
253 unsigned long i_last_pfault;
255 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
259 * Since i_inode is the first element of struct gfs2_inode,
260 * this is effectively a cast.
262 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
264 return container_of(inode, struct gfs2_inode, i_inode);
268 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
270 return inode->i_sb->s_fs_info;
274 GFF_DID_DIRECT_ALLOC = 0,
279 unsigned long f_flags; /* GFF_... */
280 struct mutex f_fl_mutex;
281 struct gfs2_holder f_fl_gh;
285 struct gfs2_log_element rv_le;
289 struct gfs2_revoke_replay {
290 struct list_head rr_list;
292 unsigned int rr_where;
301 struct gfs2_quota_lvb {
304 __be64 qb_limit; /* Hard limit of # blocks to alloc */
305 __be64 qb_warn; /* Warn user when alloc is above this # */
306 __be64 qb_value; /* Current # blocks allocated */
309 struct gfs2_quota_data {
310 struct list_head qd_list;
311 unsigned int qd_count;
314 unsigned long qd_flags; /* QDF_... */
319 unsigned int qd_slot;
320 unsigned int qd_slot_count;
322 struct buffer_head *qd_bh;
323 struct gfs2_quota_change *qd_bh_qc;
324 unsigned int qd_bh_count;
326 struct gfs2_glock *qd_gl;
327 struct gfs2_quota_lvb qd_qb;
330 unsigned long qd_last_warn;
331 unsigned long qd_last_touched;
334 struct gfs2_log_buf {
335 struct list_head lb_list;
336 struct buffer_head *lb_bh;
337 struct buffer_head *lb_real;
343 unsigned int tr_blocks;
344 unsigned int tr_revokes;
345 unsigned int tr_reserved;
347 struct gfs2_holder tr_t_gh;
351 unsigned int tr_num_buf;
352 unsigned int tr_num_buf_new;
353 unsigned int tr_num_buf_rm;
354 struct list_head tr_list_buf;
356 unsigned int tr_num_revoke;
357 unsigned int tr_num_revoke_rm;
361 struct list_head ai_list;
363 unsigned int ai_first;
364 struct list_head ai_ail1_list;
365 struct list_head ai_ail2_list;
371 struct list_head jd_list;
373 struct inode *jd_inode;
377 unsigned int jd_blocks;
380 #define GFS2_GLOCKD_DEFAULT 1
381 #define GFS2_GLOCKD_MAX 16
383 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
384 #define GFS2_QUOTA_OFF 0
385 #define GFS2_QUOTA_ACCOUNT 1
386 #define GFS2_QUOTA_ON 2
388 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
389 #define GFS2_DATA_WRITEBACK 1
390 #define GFS2_DATA_ORDERED 2
393 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
394 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
395 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
396 int ar_spectator; /* Don't get a journal because we're always RO */
397 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
398 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
399 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
400 int ar_debug; /* Oops on errors instead of trying to be graceful */
401 int ar_upgrade; /* Upgrade ondisk/multihost format */
402 unsigned int ar_num_glockd; /* Number of glockd threads */
403 int ar_posix_acl; /* Enable posix acls */
404 int ar_quota; /* off/account/on */
405 int ar_suiddir; /* suiddir support */
406 int ar_data; /* ordered/writeback */
412 unsigned int gt_ilimit;
413 unsigned int gt_ilimit_tries;
414 unsigned int gt_ilimit_min;
415 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
416 unsigned int gt_incore_log_blocks;
417 unsigned int gt_log_flush_secs;
418 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
420 unsigned int gt_scand_secs;
421 unsigned int gt_recoverd_secs;
422 unsigned int gt_logd_secs;
423 unsigned int gt_quotad_secs;
425 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
426 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
427 unsigned int gt_quota_scale_num; /* Numerator */
428 unsigned int gt_quota_scale_den; /* Denominator */
429 unsigned int gt_quota_cache_secs;
430 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
431 unsigned int gt_atime_quantum; /* Min secs between atime updates */
432 unsigned int gt_new_files_jdata;
433 unsigned int gt_new_files_directio;
434 unsigned int gt_max_atomic_write; /* Split big writes into this size */
435 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
436 unsigned int gt_lockdump_size;
437 unsigned int gt_stall_secs; /* Detects trouble! */
438 unsigned int gt_complain_secs;
439 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
440 unsigned int gt_entries_per_readdir;
441 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
442 unsigned int gt_greedy_default;
443 unsigned int gt_greedy_quantum;
444 unsigned int gt_greedy_max;
445 unsigned int gt_statfs_quantum;
446 unsigned int gt_statfs_slow;
450 SDF_JOURNAL_CHECKED = 0,
451 SDF_JOURNAL_LIVE = 1,
456 #define GFS2_GL_HASH_SHIFT 13
457 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
458 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
459 #define GFS2_FSNAME_LEN 256
462 struct super_block *sd_vfs;
463 struct super_block *sd_vfs_meta;
464 struct kobject sd_kobj;
465 unsigned long sd_flags; /* SDF_... */
466 struct gfs2_sb sd_sb;
468 /* Constants computed on mount */
472 u32 sd_diptrs; /* Number of pointers in a dinode */
473 u32 sd_inptrs; /* Number of pointers in a indirect block */
474 u32 sd_jbsize; /* Size of a journaled data block */
475 u32 sd_hash_bsize; /* sizeof(exhash block) */
476 u32 sd_hash_bsize_shift;
477 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
479 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
480 u32 sd_max_height; /* Max height of a file's metadata tree */
481 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
482 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
483 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
485 struct gfs2_args sd_args; /* Mount arguments */
486 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
490 struct lm_lockstruct sd_lockstruct;
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__ */