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;
36 struct gfs2_quota_data;
43 struct gfs2_gl_hash_bucket;
46 typedef void (*gfs2_glop_bh_t) (struct gfs2_glock *gl, unsigned int ret);
49 * Structure of operations that are associated with each
50 * type of element in the log.
53 struct gfs2_log_operations {
54 void (*lo_add) (struct gfs2_sbd *sdp, struct gfs2_log_element *le);
55 void (*lo_incore_commit) (struct gfs2_sbd *sdp, struct gfs2_trans *tr);
56 void (*lo_before_commit) (struct gfs2_sbd *sdp);
57 void (*lo_after_commit) (struct gfs2_sbd *sdp, struct gfs2_ail *ai);
58 void (*lo_before_scan) (struct gfs2_jdesc *jd,
59 struct gfs2_log_header *head, int pass);
60 int (*lo_scan_elements) (struct gfs2_jdesc *jd, unsigned int start,
61 struct gfs2_log_descriptor *ld, __be64 *ptr,
63 void (*lo_after_scan) (struct gfs2_jdesc *jd, int error, int pass);
67 struct gfs2_log_element {
68 struct list_head le_list;
69 const struct gfs2_log_operations *le_ops;
73 struct buffer_head *bi_bh;
81 struct list_head rd_list; /* Link with superblock */
82 struct list_head rd_list_mru;
83 struct list_head rd_recent; /* Recently used rgrps */
84 struct gfs2_glock *rd_gl; /* Glock for this rgrp */
85 struct gfs2_rindex rd_ri;
86 struct gfs2_rgrp rd_rg;
88 struct gfs2_bitmap *rd_bits;
89 unsigned int rd_bh_count;
90 struct mutex rd_mutex;
91 uint32_t rd_free_clone;
92 struct gfs2_log_element rd_le;
93 uint32_t rd_last_alloc_data;
94 uint32_t rd_last_alloc_meta;
95 struct gfs2_sbd *rd_sbd;
98 enum gfs2_state_bits {
99 BH_Pinned = BH_PrivateStart,
100 BH_Escaped = BH_PrivateStart + 1,
103 BUFFER_FNS(Pinned, pinned)
104 TAS_BUFFER_FNS(Pinned, pinned)
105 BUFFER_FNS(Escaped, escaped)
106 TAS_BUFFER_FNS(Escaped, escaped)
108 struct gfs2_bufdata {
109 struct buffer_head *bd_bh;
110 struct gfs2_glock *bd_gl;
112 struct list_head bd_list_tr;
113 struct gfs2_log_element bd_le;
115 struct gfs2_ail *bd_ail;
116 struct list_head bd_ail_st_list;
117 struct list_head bd_ail_gl_list;
120 struct gfs2_glock_operations {
121 void (*go_xmote_th) (struct gfs2_glock * gl, unsigned int state,
123 void (*go_xmote_bh) (struct gfs2_glock * gl);
124 void (*go_drop_th) (struct gfs2_glock * gl);
125 void (*go_drop_bh) (struct gfs2_glock * gl);
126 void (*go_sync) (struct gfs2_glock * gl, int flags);
127 void (*go_inval) (struct gfs2_glock * gl, int flags);
128 int (*go_demote_ok) (struct gfs2_glock * gl);
129 int (*go_lock) (struct gfs2_holder * gh);
130 void (*go_unlock) (struct gfs2_holder * gh);
131 void (*go_callback) (struct gfs2_glock * gl, unsigned int state);
132 void (*go_greedy) (struct gfs2_glock * gl);
152 struct list_head gh_list;
154 struct gfs2_glock *gh_gl;
155 struct task_struct *gh_owner;
156 unsigned int gh_state;
160 unsigned long gh_iflags;
161 struct completion gh_wait;
172 GLF_SKIP_WAITERS2 = 6,
177 struct list_head gl_list;
178 unsigned long gl_flags; /* GLF_... */
179 struct lm_lockname gl_name;
184 unsigned int gl_state;
185 struct task_struct *gl_owner;
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 struct gfs2_quota_data *al_qd[4];
220 struct gfs2_holder al_qd_ghs[4];
221 unsigned int al_qd_num;
223 u32 al_requested; /* Filled in by caller of gfs2_inplace_reserve() */
224 u32 al_alloced; /* Filled in by gfs2_alloc_*() */
226 /* Filled in by gfs2_inplace_reserve() */
228 unsigned int al_line;
230 struct gfs2_holder al_ri_gh;
231 struct gfs2_holder al_rgd_gh;
232 struct gfs2_rgrpd *al_rgd;
243 struct inode i_inode;
244 struct gfs2_inum i_num;
246 unsigned long i_flags; /* GIF_... */
249 struct gfs2_dinode i_di; /* To be replaced by ref to block */
251 struct gfs2_glock *i_gl; /* Move into i_gh? */
252 struct gfs2_holder i_iopen_gh;
253 struct gfs2_holder i_gh; /* for prepare/commit_write only */
254 struct gfs2_alloc i_alloc;
255 uint64_t i_last_rg_alloc;
258 struct rw_semaphore i_rw_mutex;
259 unsigned int i_greedy;
260 unsigned long i_last_pfault;
262 struct buffer_head *i_cache[GFS2_MAX_META_HEIGHT];
266 * Since i_inode is the first element of struct gfs2_inode,
267 * this is effectively a cast.
269 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
271 return container_of(inode, struct gfs2_inode, i_inode);
275 static inline struct gfs2_sbd *GFS2_SB(struct inode *inode)
277 return inode->i_sb->s_fs_info;
281 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;
308 struct gfs2_quota_lvb {
311 uint64_t qb_limit; /* Hard limit of # blocks to alloc */
312 uint64_t qb_warn; /* Warn user when alloc is above this # */
313 int64_t qb_value; /* Current # blocks allocated */
316 struct gfs2_quota_data {
317 struct list_head qd_list;
318 unsigned int qd_count;
321 unsigned long qd_flags; /* QDF_... */
324 int64_t qd_change_sync;
326 unsigned int qd_slot;
327 unsigned int qd_slot_count;
329 struct buffer_head *qd_bh;
330 struct gfs2_quota_change *qd_bh_qc;
331 unsigned int qd_bh_count;
333 struct gfs2_glock *qd_gl;
334 struct gfs2_quota_lvb qd_qb;
336 uint64_t qd_sync_gen;
337 unsigned long qd_last_warn;
338 unsigned long qd_last_touched;
341 struct gfs2_log_buf {
342 struct list_head lb_list;
343 struct buffer_head *lb_bh;
344 struct buffer_head *lb_real;
350 unsigned int tr_blocks;
351 unsigned int tr_revokes;
352 unsigned int tr_reserved;
354 struct gfs2_holder tr_t_gh;
358 unsigned int tr_num_buf;
359 unsigned int tr_num_buf_new;
360 unsigned int tr_num_buf_rm;
361 struct list_head tr_list_buf;
363 unsigned int tr_num_revoke;
364 unsigned int tr_num_revoke_rm;
368 struct list_head ai_list;
370 unsigned int ai_first;
371 struct list_head ai_ail1_list;
372 struct list_head ai_ail2_list;
374 uint64_t ai_sync_gen;
378 struct list_head jd_list;
380 struct inode *jd_inode;
384 unsigned int jd_blocks;
387 #define GFS2_GLOCKD_DEFAULT 1
388 #define GFS2_GLOCKD_MAX 16
390 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
391 #define GFS2_QUOTA_OFF 0
392 #define GFS2_QUOTA_ACCOUNT 1
393 #define GFS2_QUOTA_ON 2
395 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
396 #define GFS2_DATA_WRITEBACK 1
397 #define GFS2_DATA_ORDERED 2
400 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
401 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
402 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
403 int ar_spectator; /* Don't get a journal because we're always RO */
404 int ar_ignore_local_fs; /* Don't optimize even if local_fs is 1 */
405 int ar_localflocks; /* Let the VFS do flock|fcntl locks for us */
406 int ar_localcaching; /* Local-style caching (dangerous on multihost) */
407 int ar_debug; /* Oops on errors instead of trying to be graceful */
408 int ar_upgrade; /* Upgrade ondisk/multihost format */
409 unsigned int ar_num_glockd; /* Number of glockd threads */
410 int ar_posix_acl; /* Enable posix acls */
411 int ar_quota; /* off/account/on */
412 int ar_suiddir; /* suiddir support */
413 int ar_data; /* ordered/writeback */
419 unsigned int gt_ilimit;
420 unsigned int gt_ilimit_tries;
421 unsigned int gt_ilimit_min;
422 unsigned int gt_demote_secs; /* Cache retention for unheld glock */
423 unsigned int gt_incore_log_blocks;
424 unsigned int gt_log_flush_secs;
425 unsigned int gt_jindex_refresh_secs; /* Check for new journal index */
427 unsigned int gt_scand_secs;
428 unsigned int gt_recoverd_secs;
429 unsigned int gt_logd_secs;
430 unsigned int gt_quotad_secs;
432 unsigned int gt_quota_simul_sync; /* Max quotavals to sync at once */
433 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
434 unsigned int gt_quota_scale_num; /* Numerator */
435 unsigned int gt_quota_scale_den; /* Denominator */
436 unsigned int gt_quota_cache_secs;
437 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
438 unsigned int gt_atime_quantum; /* Min secs between atime updates */
439 unsigned int gt_new_files_jdata;
440 unsigned int gt_new_files_directio;
441 unsigned int gt_max_atomic_write; /* Split big writes into this size */
442 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
443 unsigned int gt_lockdump_size;
444 unsigned int gt_stall_secs; /* Detects trouble! */
445 unsigned int gt_complain_secs;
446 unsigned int gt_reclaim_limit; /* Max num of glocks in reclaim list */
447 unsigned int gt_entries_per_readdir;
448 unsigned int gt_prefetch_secs; /* Usage window for prefetched glocks */
449 unsigned int gt_greedy_default;
450 unsigned int gt_greedy_quantum;
451 unsigned int gt_greedy_max;
452 unsigned int gt_statfs_quantum;
453 unsigned int gt_statfs_slow;
456 struct gfs2_gl_hash_bucket {
458 struct list_head hb_list;
462 SDF_JOURNAL_CHECKED = 0,
463 SDF_JOURNAL_LIVE = 1,
468 #define GFS2_GL_HASH_SHIFT 13
469 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
470 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
471 #define GFS2_FSNAME_LEN 256
474 struct super_block *sd_vfs;
475 struct kobject sd_kobj;
476 unsigned long sd_flags; /* SDF_... */
477 struct gfs2_sb sd_sb;
479 /* Constants computed on mount */
482 uint32_t sd_fsb2bb_shift;
483 uint32_t sd_diptrs; /* Number of pointers in a dinode */
484 uint32_t sd_inptrs; /* Number of pointers in a indirect block */
485 uint32_t sd_jbsize; /* Size of a journaled data block */
486 uint32_t sd_hash_bsize; /* sizeof(exhash block) */
487 uint32_t sd_hash_bsize_shift;
488 uint32_t sd_hash_ptrs; /* Number of pointers in a hash block */
489 uint32_t sd_qc_per_block;
490 uint32_t sd_max_dirres; /* Max blocks needed to add a directory entry */
491 uint32_t sd_max_height; /* Max height of a file's metadata tree */
492 uint64_t sd_heightsize[GFS2_MAX_META_HEIGHT];
493 uint32_t sd_max_jheight; /* Max height of journaled file's meta tree */
494 uint64_t sd_jheightsize[GFS2_MAX_META_HEIGHT];
496 struct gfs2_args sd_args; /* Mount arguments */
497 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
501 struct lm_lockstruct sd_lockstruct;
502 struct gfs2_gl_hash_bucket sd_gl_hash[GFS2_GL_HASH_SIZE];
503 struct list_head sd_reclaim_list;
504 spinlock_t sd_reclaim_lock;
505 wait_queue_head_t sd_reclaim_wq;
506 atomic_t sd_reclaim_count;
507 struct gfs2_holder sd_live_gh;
508 struct gfs2_glock *sd_rename_gl;
509 struct gfs2_glock *sd_trans_gl;
510 struct mutex sd_invalidate_inodes_mutex;
514 struct inode *sd_master_dir;
515 struct inode *sd_jindex;
516 struct inode *sd_inum_inode;
517 struct inode *sd_statfs_inode;
518 struct inode *sd_ir_inode;
519 struct inode *sd_sc_inode;
520 struct inode *sd_qc_inode;
521 struct inode *sd_rindex;
522 struct inode *sd_quota_inode;
526 struct mutex sd_inum_mutex;
530 spinlock_t sd_statfs_spin;
531 struct mutex sd_statfs_mutex;
532 struct gfs2_statfs_change sd_statfs_master;
533 struct gfs2_statfs_change sd_statfs_local;
534 unsigned long sd_statfs_sync_time;
536 /* Resource group stuff */
538 uint64_t sd_rindex_vn;
539 spinlock_t sd_rindex_spin;
540 struct mutex sd_rindex_mutex;
541 struct list_head sd_rindex_list;
542 struct list_head sd_rindex_mru_list;
543 struct list_head sd_rindex_recent_list;
544 struct gfs2_rgrpd *sd_rindex_forward;
545 unsigned int sd_rgrps;
547 /* Journal index stuff */
549 struct list_head sd_jindex_list;
550 spinlock_t sd_jindex_spin;
551 struct mutex sd_jindex_mutex;
552 unsigned int sd_journals;
553 unsigned long sd_jindex_refresh_time;
555 struct gfs2_jdesc *sd_jdesc;
556 struct gfs2_holder sd_journal_gh;
557 struct gfs2_holder sd_jinode_gh;
559 struct gfs2_holder sd_ir_gh;
560 struct gfs2_holder sd_sc_gh;
561 struct gfs2_holder sd_qc_gh;
565 struct task_struct *sd_scand_process;
566 struct task_struct *sd_recoverd_process;
567 struct task_struct *sd_logd_process;
568 struct task_struct *sd_quotad_process;
569 struct task_struct *sd_glockd_process[GFS2_GLOCKD_MAX];
570 unsigned int sd_glockd_num;
574 struct list_head sd_quota_list;
575 atomic_t sd_quota_count;
576 spinlock_t sd_quota_spin;
577 struct mutex sd_quota_mutex;
579 unsigned int sd_quota_slots;
580 unsigned int sd_quota_chunks;
581 unsigned char **sd_quota_bitmap;
583 uint64_t sd_quota_sync_gen;
584 unsigned long sd_quota_sync_time;
588 spinlock_t sd_log_lock;
590 unsigned int sd_log_blks_reserved;
591 unsigned int sd_log_commited_buf;
592 unsigned int sd_log_commited_revoke;
594 unsigned int sd_log_num_gl;
595 unsigned int sd_log_num_buf;
596 unsigned int sd_log_num_revoke;
597 unsigned int sd_log_num_rg;
598 unsigned int sd_log_num_databuf;
599 unsigned int sd_log_num_jdata;
600 unsigned int sd_log_num_hdrs;
602 struct list_head sd_log_le_gl;
603 struct list_head sd_log_le_buf;
604 struct list_head sd_log_le_revoke;
605 struct list_head sd_log_le_rg;
606 struct list_head sd_log_le_databuf;
608 unsigned int sd_log_blks_free;
609 struct mutex sd_log_reserve_mutex;
611 uint64_t sd_log_sequence;
612 unsigned int sd_log_head;
613 unsigned int sd_log_tail;
616 unsigned long sd_log_flush_time;
617 struct rw_semaphore sd_log_flush_lock;
618 struct list_head sd_log_flush_list;
620 unsigned int sd_log_flush_head;
621 uint64_t sd_log_flush_wrapped;
623 struct list_head sd_ail1_list;
624 struct list_head sd_ail2_list;
625 uint64_t sd_ail_sync_gen;
629 struct list_head sd_revoke_list;
630 unsigned int sd_replay_tail;
632 unsigned int sd_found_blocks;
633 unsigned int sd_found_revokes;
634 unsigned int sd_replayed_blocks;
636 /* For quiescing the filesystem */
638 struct gfs2_holder sd_freeze_gh;
639 struct mutex sd_freeze_lock;
640 unsigned int sd_freeze_count;
644 atomic_t sd_glock_count;
645 atomic_t sd_glock_held_count;
646 atomic_t sd_inode_count;
647 atomic_t sd_reclaimed;
649 char sd_fsname[GFS2_FSNAME_LEN];
650 char sd_table_name[GFS2_FSNAME_LEN];
651 char sd_proto_name[GFS2_FSNAME_LEN];
655 unsigned long sd_last_warning;
658 #endif /* __INCORE_DOT_H__ */