2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 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;
37 struct gfs2_quota_data;
44 struct gfs2_gl_hash_bucket;
47 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
50 * Structure of operations that are associated with each
51 * type of element in the log.
54 struct gfs2_log_operations {
55 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
56 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
57 void (*lo_before_commit) (struct gfs2_sbd *sdp);
58 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
59 void (*lo_before_scan) (struct gfs2_jdesc *jd,
60 struct gfs2_log_header *head, int pass);
61 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
62 struct gfs2_log_descriptor *ld, __be64 *ptr,
64 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
68 struct gfs2_log_element {
69 struct list_head le_list;
70 const struct gfs2_log_operations *le_ops;
74 struct buffer_head *bi_bh;
82 struct list_head rd_list; /* Link with superblock */
83 struct list_head rd_list_mru;
84 struct list_head rd_recent; /* Recently used rgrps */
85 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
86 struct gfs2_rindex rd_ri;
87 struct gfs2_rgrp rd_rg;
89 struct gfs2_bitmap *rd_bits;
90 unsigned int rd_bh_count;
91 struct mutex rd_mutex;
92 uint32_t rd_free_clone;
93 struct gfs2_log_element rd_le;
94 uint32_t rd_last_alloc_data;
95 uint32_t rd_last_alloc_meta;
96 struct gfs2_sbd *rd_sbd;
99 enum gfs2_state_bits {
100 BH_Pinned = BH_PrivateStart,
101 BH_Escaped = BH_PrivateStart + 1,
104 BUFFER_FNS(Pinned, pinned)
105 TAS_BUFFER_FNS(Pinned, pinned)
106 BUFFER_FNS(Escaped, escaped)
107 TAS_BUFFER_FNS(Escaped, escaped)
109 struct gfs2_bufdata {
110 struct buffer_head *bd_bh;
111 struct gfs2_glock *bd_gl;
113 struct list_head bd_list_tr;
114 struct gfs2_log_element bd_le;
116 struct gfs2_ail *bd_ail;
117 struct list_head bd_ail_st_list;
118 struct list_head bd_ail_gl_list;
121 struct gfs2_glock_operations {
122 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
124 void (*go_xmote_bh) (struct gfs2_glock * gl);
125 void (*go_drop_th) (struct gfs2_glock * gl);
126 void (*go_drop_bh) (struct gfs2_glock * gl);
127 void (*go_sync) (struct gfs2_glock * gl, int flags);
128 void (*go_inval) (struct gfs2_glock * gl, int flags);
129 int (*go_demote_ok) (struct gfs2_glock * gl);
130 int (*go_lock) (struct gfs2_holder * gh);
131 void (*go_unlock) (struct gfs2_holder * gh);
132 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
133 void (*go_greedy) (struct gfs2_glock * gl);
154 struct list_head gh_list;
156 struct gfs2_glock *gh_gl;
157 struct task_struct *gh_owner;
158 unsigned int gh_state;
162 unsigned long gh_iflags;
163 struct completion gh_wait;
174 GLF_SKIP_WAITERS2 = 6,
179 struct list_head gl_list;
180 unsigned long gl_flags; /* GLF_... */
181 struct lm_lockname gl_name;
186 unsigned int gl_state;
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 unsigned int al_qd_num;
220 struct gfs2_quota_data *al_qd[4];
221 struct gfs2_holder al_qd_ghs[4];
223 /* Filled in by the caller to gfs2_inplace_reserve() */
225 uint32_t al_requested;
227 /* Filled in by gfs2_inplace_reserve() */
230 unsigned int al_line;
231 struct gfs2_holder al_ri_gh;
232 struct gfs2_holder al_rgd_gh;
233 struct gfs2_rgrpd *al_rgd;
235 /* Filled in by gfs2_alloc_*() */
248 struct gfs2_inum i_num;
251 unsigned long i_flags; /* GIF_... */
254 struct gfs2_dinode i_di;
256 struct gfs2_glock *i_gl;
257 struct gfs2_sbd *i_sbd;
258 struct inode *i_vnode;
260 struct gfs2_holder i_iopen_gh;
261 struct gfs2_holder i_gh; /* for prepare/commit_write only */
262 struct gfs2_alloc i_alloc;
263 uint64_t i_last_rg_alloc;
266 struct rw_semaphore i_rw_mutex;
268 unsigned int i_greedy;
269 unsigned long i_last_pfault;
271 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
275 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;
299 struct gfs2_unlinked {
300 struct list_head ul_list;
301 unsigned int ul_count;
302 struct gfs2_unlinked_tag ul_ut;
303 unsigned long ul_flags; /* ULF_... */
304 unsigned int ul_slot;
313 struct gfs2_quota_lvb {
316 uint64_t qb_limit; /* Hard limit of # blocks to alloc */
317 uint64_t qb_warn; /* Warn user when alloc is above this # */
318 int64_t qb_value; /* Current # blocks allocated */
321 struct gfs2_quota_data {
322 struct list_head qd_list;
323 unsigned int qd_count;
326 unsigned long qd_flags; /* QDF_... */
329 int64_t qd_change_sync;
331 unsigned int qd_slot;
332 unsigned int qd_slot_count;
334 struct buffer_head *qd_bh;
335 struct gfs2_quota_change *qd_bh_qc;
336 unsigned int qd_bh_count;
338 struct gfs2_glock *qd_gl;
339 struct gfs2_quota_lvb qd_qb;
341 uint64_t qd_sync_gen;
342 unsigned long qd_last_warn;
343 unsigned long qd_last_touched;
346 struct gfs2_log_buf {
347 struct list_head lb_list;
348 struct buffer_head *lb_bh;
349 struct buffer_head *lb_real;
355 unsigned int tr_blocks;
356 unsigned int tr_revokes;
357 unsigned int tr_reserved;
359 struct gfs2_holder tr_t_gh;
363 unsigned int tr_num_buf;
364 unsigned int tr_num_buf_new;
365 unsigned int tr_num_buf_rm;
366 struct list_head tr_list_buf;
368 unsigned int tr_num_revoke;
369 unsigned int tr_num_revoke_rm;
373 struct list_head ai_list;
375 unsigned int ai_first;
376 struct list_head ai_ail1_list;
377 struct list_head ai_ail2_list;
379 uint64_t ai_sync_gen;
383 struct list_head jd_list;
385 struct inode *jd_inode;
389 unsigned int jd_blocks;
392 #define GFS2_GLOCKD_DEFAULT 1
393 #define GFS2_GLOCKD_MAX 16
395 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
396 #define GFS2_QUOTA_OFF 0
397 #define GFS2_QUOTA_ACCOUNT 1
398 #define GFS2_QUOTA_ON 2
400 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
401 #define GFS2_DATA_WRITEBACK 1
402 #define GFS2_DATA_ORDERED 2
405 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
406 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
407 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
408 int ar_spectator; /* Don't get a journal because we're always RO */
409 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
410 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
411 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
412 int ar_debug; /* Oops on errors instead of trying to be graceful */
413 int ar_upgrade; /* Upgrade ondisk/multihost format */
414 unsigned int ar_num_glockd; /* Number of glockd threads */
415 int ar_posix_acl; /* Enable posix acls */
416 int ar_quota; /* off/account/on */
417 int ar_suiddir; /* suiddir support */
418 int ar_data; /* ordered/writeback */
424 unsigned int gt_ilimit;
425 unsigned int gt_ilimit_tries;
426 unsigned int gt_ilimit_min;
427 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
428 unsigned int gt_incore_log_blocks;
429 unsigned int gt_log_flush_secs;
430 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
432 unsigned int gt_scand_secs;
433 unsigned int gt_recoverd_secs;
434 unsigned int gt_logd_secs;
435 unsigned int gt_quotad_secs;
436 unsigned int gt_inoded_secs;
438 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
439 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
440 unsigned int gt_quota_scale_num; /* Numerator */
441 unsigned int gt_quota_scale_den; /* Denominator */
442 unsigned int gt_quota_cache_secs;
443 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
444 unsigned int gt_atime_quantum; /* Min secs between atime updates */
445 unsigned int gt_new_files_jdata;
446 unsigned int gt_new_files_directio;
447 unsigned int gt_max_atomic_write; /* Split big writes into this size */
448 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
449 unsigned int gt_lockdump_size;
450 unsigned int gt_stall_secs; /* Detects trouble! */
451 unsigned int gt_complain_secs;
452 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
453 unsigned int gt_entries_per_readdir;
454 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
455 unsigned int gt_greedy_default;
456 unsigned int gt_greedy_quantum;
457 unsigned int gt_greedy_max;
458 unsigned int gt_statfs_quantum;
459 unsigned int gt_statfs_slow;
462 struct gfs2_gl_hash_bucket {
464 struct list_head hb_list;
468 SDF_JOURNAL_CHECKED = 0,
469 SDF_JOURNAL_LIVE = 1,
474 #define GFS2_GL_HASH_SHIFT 13
475 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
476 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
477 #define GFS2_FSNAME_LEN 256
480 struct super_block *sd_vfs;
481 struct kobject sd_kobj;
482 unsigned long sd_flags; /* SDF_... */
483 struct gfs2_sb sd_sb;
485 /* Constants computed on mount */
488 uint32_t sd_fsb2bb_shift;
489 uint32_t sd_diptrs; /* Number of pointers in a dinode */
490 uint32_t sd_inptrs; /* Number of pointers in a indirect block */
491 uint32_t sd_jbsize; /* Size of a journaled data block */
492 uint32_t sd_hash_bsize; /* sizeof(exhash block) */
493 uint32_t sd_hash_bsize_shift;
494 uint32_t sd_hash_ptrs; /* Number of pointers in a hash block */
495 uint32_t sd_ut_per_block;
496 uint32_t sd_qc_per_block;
497 uint32_t sd_max_dirres; /* Max blocks needed to add a directory entry */
498 uint32_t sd_max_height; /* Max height of a file's metadata tree */
499 uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
500 uint32_t sd_max_jheight; /* Max height of journaled file's meta tree */
501 uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
503 struct gfs2_args sd_args; /* Mount arguments */
504 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
508 struct lm_lockstruct sd_lockstruct;
509 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
510 struct list_head sd_reclaim_list;
511 spinlock_t sd_reclaim_lock;
512 wait_queue_head_t sd_reclaim_wq;
513 atomic_t sd_reclaim_count;
514 struct gfs2_holder sd_live_gh;
515 struct gfs2_glock *sd_rename_gl;
516 struct gfs2_glock *sd_trans_gl;
517 struct mutex sd_invalidate_inodes_mutex;
521 struct inode *sd_master_dir;
522 struct inode *sd_jindex;
523 struct inode *sd_inum_inode;
524 struct inode *sd_statfs_inode;
525 struct inode *sd_ir_inode;
526 struct inode *sd_sc_inode;
527 struct inode *sd_ut_inode;
528 struct inode *sd_qc_inode;
529 struct inode *sd_rindex;
530 struct inode *sd_quota_inode;
534 struct mutex sd_inum_mutex;
538 spinlock_t sd_statfs_spin;
539 struct mutex sd_statfs_mutex;
540 struct gfs2_statfs_change sd_statfs_master;
541 struct gfs2_statfs_change sd_statfs_local;
542 unsigned long sd_statfs_sync_time;
544 /* Resource group stuff */
546 uint64_t sd_rindex_vn;
547 spinlock_t sd_rindex_spin;
548 struct mutex sd_rindex_mutex;
549 struct list_head sd_rindex_list;
550 struct list_head sd_rindex_mru_list;
551 struct list_head sd_rindex_recent_list;
552 struct gfs2_rgrpd *sd_rindex_forward;
553 unsigned int sd_rgrps;
555 /* Journal index stuff */
557 struct list_head sd_jindex_list;
558 spinlock_t sd_jindex_spin;
559 struct mutex sd_jindex_mutex;
560 unsigned int sd_journals;
561 unsigned long sd_jindex_refresh_time;
563 struct gfs2_jdesc *sd_jdesc;
564 struct gfs2_holder sd_journal_gh;
565 struct gfs2_holder sd_jinode_gh;
567 struct gfs2_holder sd_ir_gh;
568 struct gfs2_holder sd_sc_gh;
569 struct gfs2_holder sd_ut_gh;
570 struct gfs2_holder sd_qc_gh;
574 struct task_struct *sd_scand_process;
575 struct task_struct *sd_recoverd_process;
576 struct task_struct *sd_logd_process;
577 struct task_struct *sd_quotad_process;
578 struct task_struct *sd_inoded_process;
579 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
580 unsigned int sd_glockd_num;
582 /* Unlinked inode stuff */
584 struct list_head sd_unlinked_list;
585 atomic_t sd_unlinked_count;
586 spinlock_t sd_unlinked_spin;
587 struct mutex sd_unlinked_mutex;
589 unsigned int sd_unlinked_slots;
590 unsigned int sd_unlinked_chunks;
591 unsigned char **sd_unlinked_bitmap;
595 struct list_head sd_quota_list;
596 atomic_t sd_quota_count;
597 spinlock_t sd_quota_spin;
598 struct mutex sd_quota_mutex;
600 unsigned int sd_quota_slots;
601 unsigned int sd_quota_chunks;
602 unsigned char **sd_quota_bitmap;
604 uint64_t sd_quota_sync_gen;
605 unsigned long sd_quota_sync_time;
609 spinlock_t sd_log_lock;
611 unsigned int sd_log_blks_reserved;
612 unsigned int sd_log_commited_buf;
613 unsigned int sd_log_commited_revoke;
615 unsigned int sd_log_num_gl;
616 unsigned int sd_log_num_buf;
617 unsigned int sd_log_num_revoke;
618 unsigned int sd_log_num_rg;
619 unsigned int sd_log_num_databuf;
620 unsigned int sd_log_num_jdata;
621 unsigned int sd_log_num_hdrs;
623 struct list_head sd_log_le_gl;
624 struct list_head sd_log_le_buf;
625 struct list_head sd_log_le_revoke;
626 struct list_head sd_log_le_rg;
627 struct list_head sd_log_le_databuf;
629 unsigned int sd_log_blks_free;
630 struct mutex sd_log_reserve_mutex;
632 uint64_t sd_log_sequence;
633 unsigned int sd_log_head;
634 unsigned int sd_log_tail;
637 unsigned long sd_log_flush_time;
638 struct rw_semaphore sd_log_flush_lock;
639 struct list_head sd_log_flush_list;
641 unsigned int sd_log_flush_head;
642 uint64_t sd_log_flush_wrapped;
644 struct list_head sd_ail1_list;
645 struct list_head sd_ail2_list;
646 uint64_t sd_ail_sync_gen;
650 struct list_head sd_revoke_list;
651 unsigned int sd_replay_tail;
653 unsigned int sd_found_blocks;
654 unsigned int sd_found_revokes;
655 unsigned int sd_replayed_blocks;
657 /* For quiescing the filesystem */
659 struct gfs2_holder sd_freeze_gh;
660 struct mutex sd_freeze_lock;
661 unsigned int sd_freeze_count;
665 atomic_t sd_glock_count;
666 atomic_t sd_glock_held_count;
667 atomic_t sd_inode_count;
668 atomic_t sd_reclaimed;
670 char sd_fsname[GFS2_FSNAME_LEN];
671 char sd_table_name[GFS2_FSNAME_LEN];
672 char sd_proto_name[GFS2_FSNAME_LEN];
676 unsigned long sd_last_warning;
679 #endif /* __INCORE_DOT_H__ */