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;
33 struct gfs2_gl_hash_bucket;
36 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
39 * Structure of operations that are associated with each
40 * type of element in the log.
43 struct gfs2_log_operations {
44 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
45 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
46 void (*lo_before_commit) (struct gfs2_sbd *sdp);
47 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
48 void (*lo_before_scan) (struct gfs2_jdesc *jd,
49 struct gfs2_log_header *head, int pass);
50 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
51 struct gfs2_log_descriptor *ld, __be64 *ptr,
53 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
57 struct gfs2_log_element {
58 struct list_head le_list;
59 const struct gfs2_log_operations *le_ops;
63 struct buffer_head *bi_bh;
71 struct list_head rd_list; /* Link with superblock */
72 struct list_head rd_list_mru;
73 struct list_head rd_recent; /* Recently used rgrps */
74 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
75 struct gfs2_rindex rd_ri;
76 struct gfs2_rgrp rd_rg;
78 struct gfs2_bitmap *rd_bits;
79 unsigned int rd_bh_count;
80 struct mutex rd_mutex;
82 struct gfs2_log_element rd_le;
83 u32 rd_last_alloc_data;
84 u32 rd_last_alloc_meta;
85 struct gfs2_sbd *rd_sbd;
88 enum gfs2_state_bits {
89 BH_Pinned = BH_PrivateStart,
90 BH_Escaped = BH_PrivateStart + 1,
93 BUFFER_FNS(Pinned, pinned)
94 TAS_BUFFER_FNS(Pinned, pinned)
95 BUFFER_FNS(Escaped, escaped)
96 TAS_BUFFER_FNS(Escaped, escaped)
99 struct buffer_head *bd_bh;
100 struct gfs2_glock *bd_gl;
102 struct list_head bd_list_tr;
103 struct gfs2_log_element bd_le;
105 struct gfs2_ail *bd_ail;
106 struct list_head bd_ail_st_list;
107 struct list_head bd_ail_gl_list;
110 struct gfs2_glock_operations {
111 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
113 void (*go_xmote_bh) (struct gfs2_glock * gl);
114 void (*go_drop_th) (struct gfs2_glock * gl);
115 void (*go_drop_bh) (struct gfs2_glock * gl);
116 void (*go_sync) (struct gfs2_glock * gl, int flags);
117 void (*go_inval) (struct gfs2_glock * gl, int flags);
118 int (*go_demote_ok) (struct gfs2_glock * gl);
119 int (*go_lock) (struct gfs2_holder * gh);
120 void (*go_unlock) (struct gfs2_holder * gh);
121 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
122 void (*go_greedy) (struct gfs2_glock * gl);
142 struct list_head gh_list;
144 struct gfs2_glock *gh_gl;
145 struct task_struct *gh_owner;
146 unsigned int gh_state;
150 unsigned long gh_iflags;
151 struct completion gh_wait;
161 GLF_SKIP_WAITERS2 = 6,
166 struct list_head gl_list;
167 unsigned long gl_flags; /* GLF_... */
168 struct lm_lockname gl_name;
173 unsigned int gl_state;
174 struct task_struct *gl_owner;
176 struct list_head gl_holders;
177 struct list_head gl_waiters1; /* HIF_MUTEX */
178 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
179 struct list_head gl_waiters3; /* HIF_PROMOTE */
181 const struct gfs2_glock_operations *gl_ops;
183 struct gfs2_holder *gl_req_gh;
184 gfs2_glop_bh_t gl_req_bh;
188 atomic_t gl_lvb_count;
191 unsigned long gl_stamp;
194 struct gfs2_gl_hash_bucket *gl_bucket;
195 struct list_head gl_reclaim;
197 struct gfs2_sbd *gl_sbd;
199 struct inode *gl_aspace;
200 struct gfs2_log_element gl_le;
201 struct list_head gl_ail_list;
202 atomic_t gl_ail_count;
208 struct gfs2_quota_data *al_qd[2*MAXQUOTAS];
209 struct gfs2_holder al_qd_ghs[2*MAXQUOTAS];
210 unsigned int al_qd_num;
212 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
213 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
215 /* Filled in by gfs2_inplace_reserve() */
217 unsigned int al_line;
219 struct gfs2_holder al_ri_gh;
220 struct gfs2_holder al_rgd_gh;
221 struct gfs2_rgrpd *al_rgd;
232 struct inode i_inode;
233 struct gfs2_inum i_num;
235 unsigned long i_flags; /* GIF_... */
238 struct gfs2_dinode i_di; /* To be replaced by ref to block */
240 struct gfs2_glock *i_gl; /* Move into i_gh? */
241 struct gfs2_holder i_iopen_gh;
242 struct gfs2_holder i_gh; /* for prepare/commit_write only */
243 struct gfs2_alloc i_alloc;
247 struct rw_semaphore i_rw_mutex;
248 unsigned int i_greedy;
249 unsigned long i_last_pfault;
251 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
255 * Since i_inode is the first element of struct gfs2_inode,
256 * this is effectively a cast.
258 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
260 return container_of(inode, struct gfs2_inode, i_inode);
264 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
266 return inode->i_sb->s_fs_info;
270 GFF_DID_DIRECT_ALLOC = 0,
275 unsigned long f_flags; /* GFF_... */
276 struct mutex f_fl_mutex;
277 struct gfs2_holder f_fl_gh;
281 struct gfs2_log_element rv_le;
285 struct gfs2_revoke_replay {
286 struct list_head rr_list;
288 unsigned int rr_where;
297 struct gfs2_quota_lvb {
300 __be64 qb_limit; /* Hard limit of # blocks to alloc */
301 __be64 qb_warn; /* Warn user when alloc is above this # */
302 __be64 qb_value; /* Current # blocks allocated */
305 struct gfs2_quota_data {
306 struct list_head qd_list;
307 unsigned int qd_count;
310 unsigned long qd_flags; /* QDF_... */
315 unsigned int qd_slot;
316 unsigned int qd_slot_count;
318 struct buffer_head *qd_bh;
319 struct gfs2_quota_change *qd_bh_qc;
320 unsigned int qd_bh_count;
322 struct gfs2_glock *qd_gl;
323 struct gfs2_quota_lvb qd_qb;
326 unsigned long qd_last_warn;
327 unsigned long qd_last_touched;
330 struct gfs2_log_buf {
331 struct list_head lb_list;
332 struct buffer_head *lb_bh;
333 struct buffer_head *lb_real;
339 unsigned int tr_blocks;
340 unsigned int tr_revokes;
341 unsigned int tr_reserved;
343 struct gfs2_holder tr_t_gh;
347 unsigned int tr_num_buf;
348 unsigned int tr_num_buf_new;
349 unsigned int tr_num_buf_rm;
350 struct list_head tr_list_buf;
352 unsigned int tr_num_revoke;
353 unsigned int tr_num_revoke_rm;
357 struct list_head ai_list;
359 unsigned int ai_first;
360 struct list_head ai_ail1_list;
361 struct list_head ai_ail2_list;
367 struct list_head jd_list;
369 struct inode *jd_inode;
373 unsigned int jd_blocks;
376 #define GFS2_GLOCKD_DEFAULT 1
377 #define GFS2_GLOCKD_MAX 16
379 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
380 #define GFS2_QUOTA_OFF 0
381 #define GFS2_QUOTA_ACCOUNT 1
382 #define GFS2_QUOTA_ON 2
384 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
385 #define GFS2_DATA_WRITEBACK 1
386 #define GFS2_DATA_ORDERED 2
389 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
390 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
391 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
392 int ar_spectator; /* Don't get a journal because we're always RO */
393 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
394 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
395 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
396 int ar_debug; /* Oops on errors instead of trying to be graceful */
397 int ar_upgrade; /* Upgrade ondisk/multihost format */
398 unsigned int ar_num_glockd; /* Number of glockd threads */
399 int ar_posix_acl; /* Enable posix acls */
400 int ar_quota; /* off/account/on */
401 int ar_suiddir; /* suiddir support */
402 int ar_data; /* ordered/writeback */
408 unsigned int gt_ilimit;
409 unsigned int gt_ilimit_tries;
410 unsigned int gt_ilimit_min;
411 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
412 unsigned int gt_incore_log_blocks;
413 unsigned int gt_log_flush_secs;
414 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
416 unsigned int gt_scand_secs;
417 unsigned int gt_recoverd_secs;
418 unsigned int gt_logd_secs;
419 unsigned int gt_quotad_secs;
421 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
422 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
423 unsigned int gt_quota_scale_num; /* Numerator */
424 unsigned int gt_quota_scale_den; /* Denominator */
425 unsigned int gt_quota_cache_secs;
426 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
427 unsigned int gt_atime_quantum; /* Min secs between atime updates */
428 unsigned int gt_new_files_jdata;
429 unsigned int gt_new_files_directio;
430 unsigned int gt_max_atomic_write; /* Split big writes into this size */
431 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
432 unsigned int gt_lockdump_size;
433 unsigned int gt_stall_secs; /* Detects trouble! */
434 unsigned int gt_complain_secs;
435 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
436 unsigned int gt_entries_per_readdir;
437 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
438 unsigned int gt_greedy_default;
439 unsigned int gt_greedy_quantum;
440 unsigned int gt_greedy_max;
441 unsigned int gt_statfs_quantum;
442 unsigned int gt_statfs_slow;
445 struct gfs2_gl_hash_bucket {
447 struct list_head hb_list;
451 SDF_JOURNAL_CHECKED = 0,
452 SDF_JOURNAL_LIVE = 1,
457 #define GFS2_GL_HASH_SHIFT 13
458 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
459 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
460 #define GFS2_FSNAME_LEN 256
463 struct super_block *sd_vfs;
464 struct super_block *sd_vfs_meta;
465 struct kobject sd_kobj;
466 unsigned long sd_flags; /* SDF_... */
467 struct gfs2_sb sd_sb;
469 /* Constants computed on mount */
473 u32 sd_diptrs; /* Number of pointers in a dinode */
474 u32 sd_inptrs; /* Number of pointers in a indirect block */
475 u32 sd_jbsize; /* Size of a journaled data block */
476 u32 sd_hash_bsize; /* sizeof(exhash block) */
477 u32 sd_hash_bsize_shift;
478 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
480 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
481 u32 sd_max_height; /* Max height of a file's metadata tree */
482 u64 sd_heightsize[GFS2_MAX_META_HEIGHT];
483 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
484 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT];
486 struct gfs2_args sd_args; /* Mount arguments */
487 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
491 struct lm_lockstruct sd_lockstruct;
492 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
493 struct list_head sd_reclaim_list;
494 spinlock_t sd_reclaim_lock;
495 wait_queue_head_t sd_reclaim_wq;
496 atomic_t sd_reclaim_count;
497 struct gfs2_holder sd_live_gh;
498 struct gfs2_glock *sd_rename_gl;
499 struct gfs2_glock *sd_trans_gl;
503 struct inode *sd_master_dir;
504 struct inode *sd_jindex;
505 struct inode *sd_inum_inode;
506 struct inode *sd_statfs_inode;
507 struct inode *sd_ir_inode;
508 struct inode *sd_sc_inode;
509 struct inode *sd_qc_inode;
510 struct inode *sd_rindex;
511 struct inode *sd_quota_inode;
515 struct mutex sd_inum_mutex;
519 spinlock_t sd_statfs_spin;
520 struct mutex sd_statfs_mutex;
521 struct gfs2_statfs_change sd_statfs_master;
522 struct gfs2_statfs_change sd_statfs_local;
523 unsigned long sd_statfs_sync_time;
525 /* Resource group stuff */
528 spinlock_t sd_rindex_spin;
529 struct mutex sd_rindex_mutex;
530 struct list_head sd_rindex_list;
531 struct list_head sd_rindex_mru_list;
532 struct list_head sd_rindex_recent_list;
533 struct gfs2_rgrpd *sd_rindex_forward;
534 unsigned int sd_rgrps;
536 /* Journal index stuff */
538 struct list_head sd_jindex_list;
539 spinlock_t sd_jindex_spin;
540 struct mutex sd_jindex_mutex;
541 unsigned int sd_journals;
542 unsigned long sd_jindex_refresh_time;
544 struct gfs2_jdesc *sd_jdesc;
545 struct gfs2_holder sd_journal_gh;
546 struct gfs2_holder sd_jinode_gh;
548 struct gfs2_holder sd_ir_gh;
549 struct gfs2_holder sd_sc_gh;
550 struct gfs2_holder sd_qc_gh;
554 struct task_struct *sd_scand_process;
555 struct task_struct *sd_recoverd_process;
556 struct task_struct *sd_logd_process;
557 struct task_struct *sd_quotad_process;
558 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
559 unsigned int sd_glockd_num;
563 struct list_head sd_quota_list;
564 atomic_t sd_quota_count;
565 spinlock_t sd_quota_spin;
566 struct mutex sd_quota_mutex;
568 unsigned int sd_quota_slots;
569 unsigned int sd_quota_chunks;
570 unsigned char **sd_quota_bitmap;
572 u64 sd_quota_sync_gen;
573 unsigned long sd_quota_sync_time;
577 spinlock_t sd_log_lock;
579 unsigned int sd_log_blks_reserved;
580 unsigned int sd_log_commited_buf;
581 unsigned int sd_log_commited_revoke;
583 unsigned int sd_log_num_gl;
584 unsigned int sd_log_num_buf;
585 unsigned int sd_log_num_revoke;
586 unsigned int sd_log_num_rg;
587 unsigned int sd_log_num_databuf;
588 unsigned int sd_log_num_jdata;
589 unsigned int sd_log_num_hdrs;
591 struct list_head sd_log_le_gl;
592 struct list_head sd_log_le_buf;
593 struct list_head sd_log_le_revoke;
594 struct list_head sd_log_le_rg;
595 struct list_head sd_log_le_databuf;
597 unsigned int sd_log_blks_free;
598 struct mutex sd_log_reserve_mutex;
601 unsigned int sd_log_head;
602 unsigned int sd_log_tail;
605 unsigned long sd_log_flush_time;
606 struct rw_semaphore sd_log_flush_lock;
607 struct list_head sd_log_flush_list;
609 unsigned int sd_log_flush_head;
610 u64 sd_log_flush_wrapped;
612 struct list_head sd_ail1_list;
613 struct list_head sd_ail2_list;
618 struct list_head sd_revoke_list;
619 unsigned int sd_replay_tail;
621 unsigned int sd_found_blocks;
622 unsigned int sd_found_revokes;
623 unsigned int sd_replayed_blocks;
625 /* For quiescing the filesystem */
627 struct gfs2_holder sd_freeze_gh;
628 struct mutex sd_freeze_lock;
629 unsigned int sd_freeze_count;
633 atomic_t sd_glock_count;
634 atomic_t sd_glock_held_count;
635 atomic_t sd_inode_count;
636 atomic_t sd_reclaimed;
638 char sd_fsname[GFS2_FSNAME_LEN];
639 char sd_table_name[GFS2_FSNAME_LEN];
640 char sd_proto_name[GFS2_FSNAME_LEN];
644 unsigned long sd_last_warning;
645 struct vfsmount *sd_gfs2mnt;
648 #endif /* __INCORE_DOT_H__ */