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;
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);
153 struct list_head gh_list;
155 struct gfs2_glock *gh_gl;
156 struct task_struct *gh_owner;
157 unsigned int gh_state;
161 unsigned long gh_iflags;
162 struct completion gh_wait;
173 GLF_SKIP_WAITERS2 = 6,
178 struct list_head gl_list;
179 unsigned long gl_flags; /* GLF_... */
180 struct lm_lockname gl_name;
185 unsigned int gl_state;
186 struct task_struct *gl_owner;
188 struct list_head gl_holders;
189 struct list_head gl_waiters1; /* HIF_MUTEX */
190 struct list_head gl_waiters2; /* HIF_DEMOTE, HIF_GREEDY */
191 struct list_head gl_waiters3; /* HIF_PROMOTE */
193 struct gfs2_glock_operations *gl_ops;
195 struct gfs2_holder *gl_req_gh;
196 gfs2_glop_bh_t gl_req_bh;
200 atomic_t gl_lvb_count;
203 unsigned long gl_stamp;
206 struct gfs2_gl_hash_bucket *gl_bucket;
207 struct list_head gl_reclaim;
209 struct gfs2_sbd *gl_sbd;
211 struct inode *gl_aspace;
212 struct gfs2_log_element gl_le;
213 struct list_head gl_ail_list;
214 atomic_t gl_ail_count;
220 unsigned int al_qd_num;
221 struct gfs2_quota_data *al_qd[4];
222 struct gfs2_holder al_qd_ghs[4];
224 /* Filled in by the caller to gfs2_inplace_reserve() */
226 uint32_t al_requested;
228 /* Filled in by gfs2_inplace_reserve() */
231 unsigned int al_line;
232 struct gfs2_holder al_ri_gh;
233 struct gfs2_holder al_rgd_gh;
234 struct gfs2_rgrpd *al_rgd;
236 /* Filled in by gfs2_alloc_*() */
249 struct inode i_inode;
250 struct gfs2_inum i_num;
253 unsigned long i_flags; /* GIF_... */
256 struct gfs2_dinode i_di;
258 struct gfs2_glock *i_gl;
259 struct gfs2_sbd *i_sbd;
260 struct inode *i_vnode;
262 struct gfs2_holder i_iopen_gh;
263 struct gfs2_holder i_gh; /* for prepare/commit_write only */
264 struct gfs2_alloc i_alloc;
265 uint64_t i_last_rg_alloc;
268 struct rw_semaphore i_rw_mutex;
270 unsigned int i_greedy;
271 unsigned long i_last_pfault;
273 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
276 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
278 return container_of(inode, struct gfs2_inode, i_inode);
282 GFF_DID_DIRECT_ALLOC = 0,
286 unsigned long f_flags; /* GFF_... */
287 struct mutex f_fl_mutex;
288 struct gfs2_holder f_fl_gh;
292 struct gfs2_log_element rv_le;
296 struct gfs2_revoke_replay {
297 struct list_head rr_list;
299 unsigned int rr_where;
306 struct gfs2_unlinked {
307 struct list_head ul_list;
308 unsigned int ul_count;
309 struct gfs2_unlinked_tag ul_ut;
310 unsigned long ul_flags; /* ULF_... */
311 unsigned int ul_slot;
320 struct gfs2_quota_lvb {
323 uint64_t qb_limit; /* Hard limit of # blocks to alloc */
324 uint64_t qb_warn; /* Warn user when alloc is above this # */
325 int64_t qb_value; /* Current # blocks allocated */
328 struct gfs2_quota_data {
329 struct list_head qd_list;
330 unsigned int qd_count;
333 unsigned long qd_flags; /* QDF_... */
336 int64_t qd_change_sync;
338 unsigned int qd_slot;
339 unsigned int qd_slot_count;
341 struct buffer_head *qd_bh;
342 struct gfs2_quota_change *qd_bh_qc;
343 unsigned int qd_bh_count;
345 struct gfs2_glock *qd_gl;
346 struct gfs2_quota_lvb qd_qb;
348 uint64_t qd_sync_gen;
349 unsigned long qd_last_warn;
350 unsigned long qd_last_touched;
353 struct gfs2_log_buf {
354 struct list_head lb_list;
355 struct buffer_head *lb_bh;
356 struct buffer_head *lb_real;
362 unsigned int tr_blocks;
363 unsigned int tr_revokes;
364 unsigned int tr_reserved;
366 struct gfs2_holder tr_t_gh;
370 unsigned int tr_num_buf;
371 unsigned int tr_num_buf_new;
372 unsigned int tr_num_buf_rm;
373 struct list_head tr_list_buf;
375 unsigned int tr_num_revoke;
376 unsigned int tr_num_revoke_rm;
380 struct list_head ai_list;
382 unsigned int ai_first;
383 struct list_head ai_ail1_list;
384 struct list_head ai_ail2_list;
386 uint64_t ai_sync_gen;
390 struct list_head jd_list;
392 struct inode *jd_inode;
396 unsigned int jd_blocks;
399 #define GFS2_GLOCKD_DEFAULT 1
400 #define GFS2_GLOCKD_MAX 16
402 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
403 #define GFS2_QUOTA_OFF 0
404 #define GFS2_QUOTA_ACCOUNT 1
405 #define GFS2_QUOTA_ON 2
407 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
408 #define GFS2_DATA_WRITEBACK 1
409 #define GFS2_DATA_ORDERED 2
412 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
413 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
414 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
415 int ar_spectator; /* Don't get a journal because we're always RO */
416 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
417 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
418 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
419 int ar_debug; /* Oops on errors instead of trying to be graceful */
420 int ar_upgrade; /* Upgrade ondisk/multihost format */
421 unsigned int ar_num_glockd; /* Number of glockd threads */
422 int ar_posix_acl; /* Enable posix acls */
423 int ar_quota; /* off/account/on */
424 int ar_suiddir; /* suiddir support */
425 int ar_data; /* ordered/writeback */
431 unsigned int gt_ilimit;
432 unsigned int gt_ilimit_tries;
433 unsigned int gt_ilimit_min;
434 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
435 unsigned int gt_incore_log_blocks;
436 unsigned int gt_log_flush_secs;
437 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
439 unsigned int gt_scand_secs;
440 unsigned int gt_recoverd_secs;
441 unsigned int gt_logd_secs;
442 unsigned int gt_quotad_secs;
443 unsigned int gt_inoded_secs;
445 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
446 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
447 unsigned int gt_quota_scale_num; /* Numerator */
448 unsigned int gt_quota_scale_den; /* Denominator */
449 unsigned int gt_quota_cache_secs;
450 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
451 unsigned int gt_atime_quantum; /* Min secs between atime updates */
452 unsigned int gt_new_files_jdata;
453 unsigned int gt_new_files_directio;
454 unsigned int gt_max_atomic_write; /* Split big writes into this size */
455 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
456 unsigned int gt_lockdump_size;
457 unsigned int gt_stall_secs; /* Detects trouble! */
458 unsigned int gt_complain_secs;
459 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
460 unsigned int gt_entries_per_readdir;
461 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
462 unsigned int gt_greedy_default;
463 unsigned int gt_greedy_quantum;
464 unsigned int gt_greedy_max;
465 unsigned int gt_statfs_quantum;
466 unsigned int gt_statfs_slow;
469 struct gfs2_gl_hash_bucket {
471 struct list_head hb_list;
475 SDF_JOURNAL_CHECKED = 0,
476 SDF_JOURNAL_LIVE = 1,
481 #define GFS2_GL_HASH_SHIFT 13
482 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
483 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
484 #define GFS2_FSNAME_LEN 256
487 struct super_block *sd_vfs;
488 struct kobject sd_kobj;
489 unsigned long sd_flags; /* SDF_... */
490 struct gfs2_sb sd_sb;
492 /* Constants computed on mount */
495 uint32_t sd_fsb2bb_shift;
496 uint32_t sd_diptrs; /* Number of pointers in a dinode */
497 uint32_t sd_inptrs; /* Number of pointers in a indirect block */
498 uint32_t sd_jbsize; /* Size of a journaled data block */
499 uint32_t sd_hash_bsize; /* sizeof(exhash block) */
500 uint32_t sd_hash_bsize_shift;
501 uint32_t sd_hash_ptrs; /* Number of pointers in a hash block */
502 uint32_t sd_ut_per_block;
503 uint32_t sd_qc_per_block;
504 uint32_t sd_max_dirres; /* Max blocks needed to add a directory entry */
505 uint32_t sd_max_height; /* Max height of a file's metadata tree */
506 uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
507 uint32_t sd_max_jheight; /* Max height of journaled file's meta tree */
508 uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
510 struct gfs2_args sd_args; /* Mount arguments */
511 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
515 struct lm_lockstruct sd_lockstruct;
516 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
517 struct list_head sd_reclaim_list;
518 spinlock_t sd_reclaim_lock;
519 wait_queue_head_t sd_reclaim_wq;
520 atomic_t sd_reclaim_count;
521 struct gfs2_holder sd_live_gh;
522 struct gfs2_glock *sd_rename_gl;
523 struct gfs2_glock *sd_trans_gl;
524 struct mutex sd_invalidate_inodes_mutex;
528 struct inode *sd_master_dir;
529 struct inode *sd_jindex;
530 struct inode *sd_inum_inode;
531 struct inode *sd_statfs_inode;
532 struct inode *sd_ir_inode;
533 struct inode *sd_sc_inode;
534 struct inode *sd_ut_inode;
535 struct inode *sd_qc_inode;
536 struct inode *sd_rindex;
537 struct inode *sd_quota_inode;
541 struct mutex sd_inum_mutex;
545 spinlock_t sd_statfs_spin;
546 struct mutex sd_statfs_mutex;
547 struct gfs2_statfs_change sd_statfs_master;
548 struct gfs2_statfs_change sd_statfs_local;
549 unsigned long sd_statfs_sync_time;
551 /* Resource group stuff */
553 uint64_t sd_rindex_vn;
554 spinlock_t sd_rindex_spin;
555 struct mutex sd_rindex_mutex;
556 struct list_head sd_rindex_list;
557 struct list_head sd_rindex_mru_list;
558 struct list_head sd_rindex_recent_list;
559 struct gfs2_rgrpd *sd_rindex_forward;
560 unsigned int sd_rgrps;
562 /* Journal index stuff */
564 struct list_head sd_jindex_list;
565 spinlock_t sd_jindex_spin;
566 struct mutex sd_jindex_mutex;
567 unsigned int sd_journals;
568 unsigned long sd_jindex_refresh_time;
570 struct gfs2_jdesc *sd_jdesc;
571 struct gfs2_holder sd_journal_gh;
572 struct gfs2_holder sd_jinode_gh;
574 struct gfs2_holder sd_ir_gh;
575 struct gfs2_holder sd_sc_gh;
576 struct gfs2_holder sd_ut_gh;
577 struct gfs2_holder sd_qc_gh;
581 struct task_struct *sd_scand_process;
582 struct task_struct *sd_recoverd_process;
583 struct task_struct *sd_logd_process;
584 struct task_struct *sd_quotad_process;
585 struct task_struct *sd_inoded_process;
586 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
587 unsigned int sd_glockd_num;
589 /* Unlinked inode stuff */
591 struct list_head sd_unlinked_list;
592 atomic_t sd_unlinked_count;
593 spinlock_t sd_unlinked_spin;
594 struct mutex sd_unlinked_mutex;
596 unsigned int sd_unlinked_slots;
597 unsigned int sd_unlinked_chunks;
598 unsigned char **sd_unlinked_bitmap;
602 struct list_head sd_quota_list;
603 atomic_t sd_quota_count;
604 spinlock_t sd_quota_spin;
605 struct mutex sd_quota_mutex;
607 unsigned int sd_quota_slots;
608 unsigned int sd_quota_chunks;
609 unsigned char **sd_quota_bitmap;
611 uint64_t sd_quota_sync_gen;
612 unsigned long sd_quota_sync_time;
616 spinlock_t sd_log_lock;
618 unsigned int sd_log_blks_reserved;
619 unsigned int sd_log_commited_buf;
620 unsigned int sd_log_commited_revoke;
622 unsigned int sd_log_num_gl;
623 unsigned int sd_log_num_buf;
624 unsigned int sd_log_num_revoke;
625 unsigned int sd_log_num_rg;
626 unsigned int sd_log_num_databuf;
627 unsigned int sd_log_num_jdata;
628 unsigned int sd_log_num_hdrs;
630 struct list_head sd_log_le_gl;
631 struct list_head sd_log_le_buf;
632 struct list_head sd_log_le_revoke;
633 struct list_head sd_log_le_rg;
634 struct list_head sd_log_le_databuf;
636 unsigned int sd_log_blks_free;
637 struct mutex sd_log_reserve_mutex;
639 uint64_t sd_log_sequence;
640 unsigned int sd_log_head;
641 unsigned int sd_log_tail;
644 unsigned long sd_log_flush_time;
645 struct rw_semaphore sd_log_flush_lock;
646 struct list_head sd_log_flush_list;
648 unsigned int sd_log_flush_head;
649 uint64_t sd_log_flush_wrapped;
651 struct list_head sd_ail1_list;
652 struct list_head sd_ail2_list;
653 uint64_t sd_ail_sync_gen;
657 struct list_head sd_revoke_list;
658 unsigned int sd_replay_tail;
660 unsigned int sd_found_blocks;
661 unsigned int sd_found_revokes;
662 unsigned int sd_replayed_blocks;
664 /* For quiescing the filesystem */
666 struct gfs2_holder sd_freeze_gh;
667 struct mutex sd_freeze_lock;
668 unsigned int sd_freeze_count;
672 atomic_t sd_glock_count;
673 atomic_t sd_glock_held_count;
674 atomic_t sd_inode_count;
675 atomic_t sd_reclaimed;
677 char sd_fsname[GFS2_FSNAME_LEN];
678 char sd_table_name[GFS2_FSNAME_LEN];
679 char sd_proto_name[GFS2_FSNAME_LEN];
683 unsigned long sd_last_warning;
686 #endif /* __INCORE_DOT_H__ */