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
;
171 GLF_SKIP_WAITERS2
= 6,
176 struct list_head gl_list
;
177 unsigned long gl_flags
; /* GLF_... */
178 struct lm_lockname gl_name
;
183 unsigned int gl_state
;
184 struct task_struct
*gl_owner
;
186 struct list_head gl_holders
;
187 struct list_head gl_waiters1
; /* HIF_MUTEX */
188 struct list_head gl_waiters2
; /* HIF_DEMOTE, HIF_GREEDY */
189 struct list_head gl_waiters3
; /* HIF_PROMOTE */
191 const struct gfs2_glock_operations
*gl_ops
;
193 struct gfs2_holder
*gl_req_gh
;
194 gfs2_glop_bh_t gl_req_bh
;
198 atomic_t gl_lvb_count
;
201 unsigned long gl_stamp
;
204 struct gfs2_gl_hash_bucket
*gl_bucket
;
205 struct list_head gl_reclaim
;
207 struct gfs2_sbd
*gl_sbd
;
209 struct inode
*gl_aspace
;
210 struct gfs2_log_element gl_le
;
211 struct list_head gl_ail_list
;
212 atomic_t gl_ail_count
;
218 struct gfs2_quota_data
*al_qd
[4];
219 struct gfs2_holder al_qd_ghs
[4];
220 unsigned int al_qd_num
;
222 u32 al_requested
; /* Filled in by caller of gfs2_inplace_reserve() */
223 u32 al_alloced
; /* Filled in by gfs2_alloc_*() */
225 /* Filled in by gfs2_inplace_reserve() */
227 unsigned int al_line
;
229 struct gfs2_holder al_ri_gh
;
230 struct gfs2_holder al_rgd_gh
;
231 struct gfs2_rgrpd
*al_rgd
;
242 struct inode i_inode
;
243 struct gfs2_inum i_num
;
245 unsigned long i_flags
; /* GIF_... */
248 struct gfs2_dinode i_di
; /* To be replaced by ref to block */
250 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
251 struct gfs2_holder i_iopen_gh
;
252 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
253 struct gfs2_alloc i_alloc
;
254 uint64_t i_last_rg_alloc
;
257 struct rw_semaphore i_rw_mutex
;
258 unsigned int i_greedy
;
259 unsigned long i_last_pfault
;
261 struct buffer_head
*i_cache
[GFS2_MAX_META_HEIGHT
];
265 * Since i_inode is the first element of struct gfs2_inode,
266 * this is effectively a cast.
268 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
270 return container_of(inode
, struct gfs2_inode
, i_inode
);
274 static inline struct gfs2_sbd
*GFS2_SB(struct inode
*inode
)
276 return inode
->i_sb
->s_fs_info
;
280 GFF_DID_DIRECT_ALLOC
= 0,
285 unsigned long f_flags
; /* GFF_... */
286 struct mutex f_fl_mutex
;
287 struct gfs2_holder f_fl_gh
;
291 struct gfs2_log_element rv_le
;
295 struct gfs2_revoke_replay
{
296 struct list_head rr_list
;
298 unsigned int rr_where
;
307 struct gfs2_quota_lvb
{
310 uint64_t qb_limit
; /* Hard limit of # blocks to alloc */
311 uint64_t qb_warn
; /* Warn user when alloc is above this # */
312 int64_t qb_value
; /* Current # blocks allocated */
315 struct gfs2_quota_data
{
316 struct list_head qd_list
;
317 unsigned int qd_count
;
320 unsigned long qd_flags
; /* QDF_... */
323 int64_t qd_change_sync
;
325 unsigned int qd_slot
;
326 unsigned int qd_slot_count
;
328 struct buffer_head
*qd_bh
;
329 struct gfs2_quota_change
*qd_bh_qc
;
330 unsigned int qd_bh_count
;
332 struct gfs2_glock
*qd_gl
;
333 struct gfs2_quota_lvb qd_qb
;
335 uint64_t qd_sync_gen
;
336 unsigned long qd_last_warn
;
337 unsigned long qd_last_touched
;
340 struct gfs2_log_buf
{
341 struct list_head lb_list
;
342 struct buffer_head
*lb_bh
;
343 struct buffer_head
*lb_real
;
349 unsigned int tr_blocks
;
350 unsigned int tr_revokes
;
351 unsigned int tr_reserved
;
353 struct gfs2_holder tr_t_gh
;
357 unsigned int tr_num_buf
;
358 unsigned int tr_num_buf_new
;
359 unsigned int tr_num_buf_rm
;
360 struct list_head tr_list_buf
;
362 unsigned int tr_num_revoke
;
363 unsigned int tr_num_revoke_rm
;
367 struct list_head ai_list
;
369 unsigned int ai_first
;
370 struct list_head ai_ail1_list
;
371 struct list_head ai_ail2_list
;
373 uint64_t ai_sync_gen
;
377 struct list_head jd_list
;
379 struct inode
*jd_inode
;
383 unsigned int jd_blocks
;
386 #define GFS2_GLOCKD_DEFAULT 1
387 #define GFS2_GLOCKD_MAX 16
389 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
390 #define GFS2_QUOTA_OFF 0
391 #define GFS2_QUOTA_ACCOUNT 1
392 #define GFS2_QUOTA_ON 2
394 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
395 #define GFS2_DATA_WRITEBACK 1
396 #define GFS2_DATA_ORDERED 2
399 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
400 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
401 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
402 int ar_spectator
; /* Don't get a journal because we're always RO */
403 int ar_ignore_local_fs
; /* Don't optimize even if local_fs is 1 */
404 int ar_localflocks
; /* Let the VFS do flock|fcntl locks for us */
405 int ar_localcaching
; /* Local-style caching (dangerous on multihost) */
406 int ar_debug
; /* Oops on errors instead of trying to be graceful */
407 int ar_upgrade
; /* Upgrade ondisk/multihost format */
408 unsigned int ar_num_glockd
; /* Number of glockd threads */
409 int ar_posix_acl
; /* Enable posix acls */
410 int ar_quota
; /* off/account/on */
411 int ar_suiddir
; /* suiddir support */
412 int ar_data
; /* ordered/writeback */
418 unsigned int gt_ilimit
;
419 unsigned int gt_ilimit_tries
;
420 unsigned int gt_ilimit_min
;
421 unsigned int gt_demote_secs
; /* Cache retention for unheld glock */
422 unsigned int gt_incore_log_blocks
;
423 unsigned int gt_log_flush_secs
;
424 unsigned int gt_jindex_refresh_secs
; /* Check for new journal index */
426 unsigned int gt_scand_secs
;
427 unsigned int gt_recoverd_secs
;
428 unsigned int gt_logd_secs
;
429 unsigned int gt_quotad_secs
;
431 unsigned int gt_quota_simul_sync
; /* Max quotavals to sync at once */
432 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
433 unsigned int gt_quota_scale_num
; /* Numerator */
434 unsigned int gt_quota_scale_den
; /* Denominator */
435 unsigned int gt_quota_cache_secs
;
436 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
437 unsigned int gt_atime_quantum
; /* Min secs between atime updates */
438 unsigned int gt_new_files_jdata
;
439 unsigned int gt_new_files_directio
;
440 unsigned int gt_max_atomic_write
; /* Split big writes into this size */
441 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
442 unsigned int gt_lockdump_size
;
443 unsigned int gt_stall_secs
; /* Detects trouble! */
444 unsigned int gt_complain_secs
;
445 unsigned int gt_reclaim_limit
; /* Max num of glocks in reclaim list */
446 unsigned int gt_entries_per_readdir
;
447 unsigned int gt_prefetch_secs
; /* Usage window for prefetched glocks */
448 unsigned int gt_greedy_default
;
449 unsigned int gt_greedy_quantum
;
450 unsigned int gt_greedy_max
;
451 unsigned int gt_statfs_quantum
;
452 unsigned int gt_statfs_slow
;
455 struct gfs2_gl_hash_bucket
{
457 struct list_head hb_list
;
461 SDF_JOURNAL_CHECKED
= 0,
462 SDF_JOURNAL_LIVE
= 1,
467 #define GFS2_GL_HASH_SHIFT 13
468 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
469 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
470 #define GFS2_FSNAME_LEN 256
473 struct super_block
*sd_vfs
;
474 struct super_block
*sd_vfs_meta
;
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
;
513 struct inode
*sd_master_dir
;
514 struct inode
*sd_jindex
;
515 struct inode
*sd_inum_inode
;
516 struct inode
*sd_statfs_inode
;
517 struct inode
*sd_ir_inode
;
518 struct inode
*sd_sc_inode
;
519 struct inode
*sd_qc_inode
;
520 struct inode
*sd_rindex
;
521 struct inode
*sd_quota_inode
;
525 struct mutex sd_inum_mutex
;
529 spinlock_t sd_statfs_spin
;
530 struct mutex sd_statfs_mutex
;
531 struct gfs2_statfs_change sd_statfs_master
;
532 struct gfs2_statfs_change sd_statfs_local
;
533 unsigned long sd_statfs_sync_time
;
535 /* Resource group stuff */
537 uint64_t sd_rindex_vn
;
538 spinlock_t sd_rindex_spin
;
539 struct mutex sd_rindex_mutex
;
540 struct list_head sd_rindex_list
;
541 struct list_head sd_rindex_mru_list
;
542 struct list_head sd_rindex_recent_list
;
543 struct gfs2_rgrpd
*sd_rindex_forward
;
544 unsigned int sd_rgrps
;
546 /* Journal index stuff */
548 struct list_head sd_jindex_list
;
549 spinlock_t sd_jindex_spin
;
550 struct mutex sd_jindex_mutex
;
551 unsigned int sd_journals
;
552 unsigned long sd_jindex_refresh_time
;
554 struct gfs2_jdesc
*sd_jdesc
;
555 struct gfs2_holder sd_journal_gh
;
556 struct gfs2_holder sd_jinode_gh
;
558 struct gfs2_holder sd_ir_gh
;
559 struct gfs2_holder sd_sc_gh
;
560 struct gfs2_holder sd_qc_gh
;
564 struct task_struct
*sd_scand_process
;
565 struct task_struct
*sd_recoverd_process
;
566 struct task_struct
*sd_logd_process
;
567 struct task_struct
*sd_quotad_process
;
568 struct task_struct
*sd_glockd_process
[GFS2_GLOCKD_MAX
];
569 unsigned int sd_glockd_num
;
573 struct list_head sd_quota_list
;
574 atomic_t sd_quota_count
;
575 spinlock_t sd_quota_spin
;
576 struct mutex sd_quota_mutex
;
578 unsigned int sd_quota_slots
;
579 unsigned int sd_quota_chunks
;
580 unsigned char **sd_quota_bitmap
;
582 uint64_t sd_quota_sync_gen
;
583 unsigned long sd_quota_sync_time
;
587 spinlock_t sd_log_lock
;
589 unsigned int sd_log_blks_reserved
;
590 unsigned int sd_log_commited_buf
;
591 unsigned int sd_log_commited_revoke
;
593 unsigned int sd_log_num_gl
;
594 unsigned int sd_log_num_buf
;
595 unsigned int sd_log_num_revoke
;
596 unsigned int sd_log_num_rg
;
597 unsigned int sd_log_num_databuf
;
598 unsigned int sd_log_num_jdata
;
599 unsigned int sd_log_num_hdrs
;
601 struct list_head sd_log_le_gl
;
602 struct list_head sd_log_le_buf
;
603 struct list_head sd_log_le_revoke
;
604 struct list_head sd_log_le_rg
;
605 struct list_head sd_log_le_databuf
;
607 unsigned int sd_log_blks_free
;
608 struct mutex sd_log_reserve_mutex
;
610 uint64_t sd_log_sequence
;
611 unsigned int sd_log_head
;
612 unsigned int sd_log_tail
;
615 unsigned long sd_log_flush_time
;
616 struct rw_semaphore sd_log_flush_lock
;
617 struct list_head sd_log_flush_list
;
619 unsigned int sd_log_flush_head
;
620 uint64_t sd_log_flush_wrapped
;
622 struct list_head sd_ail1_list
;
623 struct list_head sd_ail2_list
;
624 uint64_t sd_ail_sync_gen
;
628 struct list_head sd_revoke_list
;
629 unsigned int sd_replay_tail
;
631 unsigned int sd_found_blocks
;
632 unsigned int sd_found_revokes
;
633 unsigned int sd_replayed_blocks
;
635 /* For quiescing the filesystem */
637 struct gfs2_holder sd_freeze_gh
;
638 struct mutex sd_freeze_lock
;
639 unsigned int sd_freeze_count
;
643 atomic_t sd_glock_count
;
644 atomic_t sd_glock_held_count
;
645 atomic_t sd_inode_count
;
646 atomic_t sd_reclaimed
;
648 char sd_fsname
[GFS2_FSNAME_LEN
];
649 char sd_table_name
[GFS2_FSNAME_LEN
];
650 char sd_proto_name
[GFS2_FSNAME_LEN
];
654 unsigned long sd_last_warning
;
655 struct vfsmount
*sd_gfs2mnt
;
658 #endif /* __INCORE_DOT_H__ */