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__
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
;
27 struct gfs2_quota_data
;
31 struct gfs2_gl_hash_bucket
;
34 typedef void (*gfs2_glop_bh_t
) (struct gfs2_glock
*gl
, unsigned int ret
);
37 * Structure of operations that are associated with each
38 * type of element in the log.
41 struct gfs2_log_operations
{
42 void (*lo_add
) (struct gfs2_sbd
*sdp
, struct gfs2_log_element
*le
);
43 void (*lo_incore_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
);
44 void (*lo_before_commit
) (struct gfs2_sbd
*sdp
);
45 void (*lo_after_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_ail
*ai
);
46 void (*lo_before_scan
) (struct gfs2_jdesc
*jd
,
47 struct gfs2_log_header
*head
, int pass
);
48 int (*lo_scan_elements
) (struct gfs2_jdesc
*jd
, unsigned int start
,
49 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
51 void (*lo_after_scan
) (struct gfs2_jdesc
*jd
, int error
, int pass
);
55 struct gfs2_log_element
{
56 struct list_head le_list
;
57 const struct gfs2_log_operations
*le_ops
;
61 struct buffer_head
*bi_bh
;
69 struct list_head rd_list
; /* Link with superblock */
70 struct list_head rd_list_mru
;
71 struct list_head rd_recent
; /* Recently used rgrps */
72 struct gfs2_glock
*rd_gl
; /* Glock for this rgrp */
73 struct gfs2_rindex rd_ri
;
74 struct gfs2_rgrp rd_rg
;
76 struct gfs2_bitmap
*rd_bits
;
77 unsigned int rd_bh_count
;
78 struct mutex rd_mutex
;
79 uint32_t rd_free_clone
;
80 struct gfs2_log_element rd_le
;
81 uint32_t rd_last_alloc_data
;
82 uint32_t rd_last_alloc_meta
;
83 struct gfs2_sbd
*rd_sbd
;
86 enum gfs2_state_bits
{
87 BH_Pinned
= BH_PrivateStart
,
88 BH_Escaped
= BH_PrivateStart
+ 1,
91 BUFFER_FNS(Pinned
, pinned
)
92 TAS_BUFFER_FNS(Pinned
, pinned
)
93 BUFFER_FNS(Escaped
, escaped
)
94 TAS_BUFFER_FNS(Escaped
, escaped
)
97 struct buffer_head
*bd_bh
;
98 struct gfs2_glock
*bd_gl
;
100 struct list_head bd_list_tr
;
101 struct gfs2_log_element bd_le
;
103 struct gfs2_ail
*bd_ail
;
104 struct list_head bd_ail_st_list
;
105 struct list_head bd_ail_gl_list
;
108 struct gfs2_glock_operations
{
109 void (*go_xmote_th
) (struct gfs2_glock
* gl
, unsigned int state
,
111 void (*go_xmote_bh
) (struct gfs2_glock
* gl
);
112 void (*go_drop_th
) (struct gfs2_glock
* gl
);
113 void (*go_drop_bh
) (struct gfs2_glock
* gl
);
114 void (*go_sync
) (struct gfs2_glock
* gl
, int flags
);
115 void (*go_inval
) (struct gfs2_glock
* gl
, int flags
);
116 int (*go_demote_ok
) (struct gfs2_glock
* gl
);
117 int (*go_lock
) (struct gfs2_holder
* gh
);
118 void (*go_unlock
) (struct gfs2_holder
* gh
);
119 void (*go_callback
) (struct gfs2_glock
* gl
, unsigned int state
);
120 void (*go_greedy
) (struct gfs2_glock
* gl
);
140 struct list_head gh_list
;
142 struct gfs2_glock
*gh_gl
;
143 struct task_struct
*gh_owner
;
144 unsigned int gh_state
;
148 unsigned long gh_iflags
;
149 struct completion gh_wait
;
159 GLF_SKIP_WAITERS2
= 6,
164 struct list_head gl_list
;
165 unsigned long gl_flags
; /* GLF_... */
166 struct lm_lockname gl_name
;
171 unsigned int gl_state
;
172 struct task_struct
*gl_owner
;
174 struct list_head gl_holders
;
175 struct list_head gl_waiters1
; /* HIF_MUTEX */
176 struct list_head gl_waiters2
; /* HIF_DEMOTE, HIF_GREEDY */
177 struct list_head gl_waiters3
; /* HIF_PROMOTE */
179 const struct gfs2_glock_operations
*gl_ops
;
181 struct gfs2_holder
*gl_req_gh
;
182 gfs2_glop_bh_t gl_req_bh
;
186 atomic_t gl_lvb_count
;
189 unsigned long gl_stamp
;
192 struct gfs2_gl_hash_bucket
*gl_bucket
;
193 struct list_head gl_reclaim
;
195 struct gfs2_sbd
*gl_sbd
;
197 struct inode
*gl_aspace
;
198 struct gfs2_log_element gl_le
;
199 struct list_head gl_ail_list
;
200 atomic_t gl_ail_count
;
206 struct gfs2_quota_data
*al_qd
[2*MAXQUOTAS
];
207 struct gfs2_holder al_qd_ghs
[2*MAXQUOTAS
];
208 unsigned int al_qd_num
;
210 u32 al_requested
; /* Filled in by caller of gfs2_inplace_reserve() */
211 u32 al_alloced
; /* Filled in by gfs2_alloc_*() */
213 /* Filled in by gfs2_inplace_reserve() */
215 unsigned int al_line
;
217 struct gfs2_holder al_ri_gh
;
218 struct gfs2_holder al_rgd_gh
;
219 struct gfs2_rgrpd
*al_rgd
;
230 struct inode i_inode
;
231 struct gfs2_inum i_num
;
233 unsigned long i_flags
; /* GIF_... */
236 struct gfs2_dinode i_di
; /* To be replaced by ref to block */
238 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
239 struct gfs2_holder i_iopen_gh
;
240 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
241 struct gfs2_alloc i_alloc
;
242 uint64_t i_last_rg_alloc
;
245 struct rw_semaphore i_rw_mutex
;
246 unsigned int i_greedy
;
247 unsigned long i_last_pfault
;
249 struct buffer_head
*i_cache
[GFS2_MAX_META_HEIGHT
];
253 * Since i_inode is the first element of struct gfs2_inode,
254 * this is effectively a cast.
256 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
258 return container_of(inode
, struct gfs2_inode
, i_inode
);
262 static inline struct gfs2_sbd
*GFS2_SB(struct inode
*inode
)
264 return inode
->i_sb
->s_fs_info
;
268 GFF_DID_DIRECT_ALLOC
= 0,
273 unsigned long f_flags
; /* GFF_... */
274 struct mutex f_fl_mutex
;
275 struct gfs2_holder f_fl_gh
;
279 struct gfs2_log_element rv_le
;
283 struct gfs2_revoke_replay
{
284 struct list_head rr_list
;
286 unsigned int rr_where
;
295 struct gfs2_quota_lvb
{
298 __be64 qb_limit
; /* Hard limit of # blocks to alloc */
299 __be64 qb_warn
; /* Warn user when alloc is above this # */
300 __be64 qb_value
; /* Current # blocks allocated */
303 struct gfs2_quota_data
{
304 struct list_head qd_list
;
305 unsigned int qd_count
;
308 unsigned long qd_flags
; /* QDF_... */
311 int64_t qd_change_sync
;
313 unsigned int qd_slot
;
314 unsigned int qd_slot_count
;
316 struct buffer_head
*qd_bh
;
317 struct gfs2_quota_change
*qd_bh_qc
;
318 unsigned int qd_bh_count
;
320 struct gfs2_glock
*qd_gl
;
321 struct gfs2_quota_lvb qd_qb
;
323 uint64_t qd_sync_gen
;
324 unsigned long qd_last_warn
;
325 unsigned long qd_last_touched
;
328 struct gfs2_log_buf
{
329 struct list_head lb_list
;
330 struct buffer_head
*lb_bh
;
331 struct buffer_head
*lb_real
;
337 unsigned int tr_blocks
;
338 unsigned int tr_revokes
;
339 unsigned int tr_reserved
;
341 struct gfs2_holder tr_t_gh
;
345 unsigned int tr_num_buf
;
346 unsigned int tr_num_buf_new
;
347 unsigned int tr_num_buf_rm
;
348 struct list_head tr_list_buf
;
350 unsigned int tr_num_revoke
;
351 unsigned int tr_num_revoke_rm
;
355 struct list_head ai_list
;
357 unsigned int ai_first
;
358 struct list_head ai_ail1_list
;
359 struct list_head ai_ail2_list
;
361 uint64_t ai_sync_gen
;
365 struct list_head jd_list
;
367 struct inode
*jd_inode
;
371 unsigned int jd_blocks
;
374 #define GFS2_GLOCKD_DEFAULT 1
375 #define GFS2_GLOCKD_MAX 16
377 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
378 #define GFS2_QUOTA_OFF 0
379 #define GFS2_QUOTA_ACCOUNT 1
380 #define GFS2_QUOTA_ON 2
382 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
383 #define GFS2_DATA_WRITEBACK 1
384 #define GFS2_DATA_ORDERED 2
387 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
388 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
389 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
390 int ar_spectator
; /* Don't get a journal because we're always RO */
391 int ar_ignore_local_fs
; /* Don't optimize even if local_fs is 1 */
392 int ar_localflocks
; /* Let the VFS do flock|fcntl locks for us */
393 int ar_localcaching
; /* Local-style caching (dangerous on multihost) */
394 int ar_debug
; /* Oops on errors instead of trying to be graceful */
395 int ar_upgrade
; /* Upgrade ondisk/multihost format */
396 unsigned int ar_num_glockd
; /* Number of glockd threads */
397 int ar_posix_acl
; /* Enable posix acls */
398 int ar_quota
; /* off/account/on */
399 int ar_suiddir
; /* suiddir support */
400 int ar_data
; /* ordered/writeback */
406 unsigned int gt_ilimit
;
407 unsigned int gt_ilimit_tries
;
408 unsigned int gt_ilimit_min
;
409 unsigned int gt_demote_secs
; /* Cache retention for unheld glock */
410 unsigned int gt_incore_log_blocks
;
411 unsigned int gt_log_flush_secs
;
412 unsigned int gt_jindex_refresh_secs
; /* Check for new journal index */
414 unsigned int gt_scand_secs
;
415 unsigned int gt_recoverd_secs
;
416 unsigned int gt_logd_secs
;
417 unsigned int gt_quotad_secs
;
419 unsigned int gt_quota_simul_sync
; /* Max quotavals to sync at once */
420 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
421 unsigned int gt_quota_scale_num
; /* Numerator */
422 unsigned int gt_quota_scale_den
; /* Denominator */
423 unsigned int gt_quota_cache_secs
;
424 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
425 unsigned int gt_atime_quantum
; /* Min secs between atime updates */
426 unsigned int gt_new_files_jdata
;
427 unsigned int gt_new_files_directio
;
428 unsigned int gt_max_atomic_write
; /* Split big writes into this size */
429 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
430 unsigned int gt_lockdump_size
;
431 unsigned int gt_stall_secs
; /* Detects trouble! */
432 unsigned int gt_complain_secs
;
433 unsigned int gt_reclaim_limit
; /* Max num of glocks in reclaim list */
434 unsigned int gt_entries_per_readdir
;
435 unsigned int gt_prefetch_secs
; /* Usage window for prefetched glocks */
436 unsigned int gt_greedy_default
;
437 unsigned int gt_greedy_quantum
;
438 unsigned int gt_greedy_max
;
439 unsigned int gt_statfs_quantum
;
440 unsigned int gt_statfs_slow
;
443 struct gfs2_gl_hash_bucket
{
445 struct list_head hb_list
;
449 SDF_JOURNAL_CHECKED
= 0,
450 SDF_JOURNAL_LIVE
= 1,
455 #define GFS2_GL_HASH_SHIFT 13
456 #define GFS2_GL_HASH_SIZE (1 << GFS2_GL_HASH_SHIFT)
457 #define GFS2_GL_HASH_MASK (GFS2_GL_HASH_SIZE - 1)
458 #define GFS2_FSNAME_LEN 256
461 struct super_block
*sd_vfs
;
462 struct super_block
*sd_vfs_meta
;
463 struct kobject sd_kobj
;
464 unsigned long sd_flags
; /* SDF_... */
465 struct gfs2_sb sd_sb
;
467 /* Constants computed on mount */
470 uint32_t sd_fsb2bb_shift
;
471 uint32_t sd_diptrs
; /* Number of pointers in a dinode */
472 uint32_t sd_inptrs
; /* Number of pointers in a indirect block */
473 uint32_t sd_jbsize
; /* Size of a journaled data block */
474 uint32_t sd_hash_bsize
; /* sizeof(exhash block) */
475 uint32_t sd_hash_bsize_shift
;
476 uint32_t sd_hash_ptrs
; /* Number of pointers in a hash block */
477 uint32_t sd_qc_per_block
;
478 uint32_t sd_max_dirres
; /* Max blocks needed to add a directory entry */
479 uint32_t sd_max_height
; /* Max height of a file's metadata tree */
480 uint64_t sd_heightsize
[GFS2_MAX_META_HEIGHT
];
481 uint32_t sd_max_jheight
; /* Max height of journaled file's meta tree */
482 uint64_t sd_jheightsize
[GFS2_MAX_META_HEIGHT
];
484 struct gfs2_args sd_args
; /* Mount arguments */
485 struct gfs2_tune sd_tune
; /* Filesystem tuning structure */
489 struct lm_lockstruct sd_lockstruct
;
490 struct gfs2_gl_hash_bucket sd_gl_hash
[GFS2_GL_HASH_SIZE
];
491 struct list_head sd_reclaim_list
;
492 spinlock_t sd_reclaim_lock
;
493 wait_queue_head_t sd_reclaim_wq
;
494 atomic_t sd_reclaim_count
;
495 struct gfs2_holder sd_live_gh
;
496 struct gfs2_glock
*sd_rename_gl
;
497 struct gfs2_glock
*sd_trans_gl
;
501 struct inode
*sd_master_dir
;
502 struct inode
*sd_jindex
;
503 struct inode
*sd_inum_inode
;
504 struct inode
*sd_statfs_inode
;
505 struct inode
*sd_ir_inode
;
506 struct inode
*sd_sc_inode
;
507 struct inode
*sd_qc_inode
;
508 struct inode
*sd_rindex
;
509 struct inode
*sd_quota_inode
;
513 struct mutex sd_inum_mutex
;
517 spinlock_t sd_statfs_spin
;
518 struct mutex sd_statfs_mutex
;
519 struct gfs2_statfs_change sd_statfs_master
;
520 struct gfs2_statfs_change sd_statfs_local
;
521 unsigned long sd_statfs_sync_time
;
523 /* Resource group stuff */
525 uint64_t sd_rindex_vn
;
526 spinlock_t sd_rindex_spin
;
527 struct mutex sd_rindex_mutex
;
528 struct list_head sd_rindex_list
;
529 struct list_head sd_rindex_mru_list
;
530 struct list_head sd_rindex_recent_list
;
531 struct gfs2_rgrpd
*sd_rindex_forward
;
532 unsigned int sd_rgrps
;
534 /* Journal index stuff */
536 struct list_head sd_jindex_list
;
537 spinlock_t sd_jindex_spin
;
538 struct mutex sd_jindex_mutex
;
539 unsigned int sd_journals
;
540 unsigned long sd_jindex_refresh_time
;
542 struct gfs2_jdesc
*sd_jdesc
;
543 struct gfs2_holder sd_journal_gh
;
544 struct gfs2_holder sd_jinode_gh
;
546 struct gfs2_holder sd_ir_gh
;
547 struct gfs2_holder sd_sc_gh
;
548 struct gfs2_holder sd_qc_gh
;
552 struct task_struct
*sd_scand_process
;
553 struct task_struct
*sd_recoverd_process
;
554 struct task_struct
*sd_logd_process
;
555 struct task_struct
*sd_quotad_process
;
556 struct task_struct
*sd_glockd_process
[GFS2_GLOCKD_MAX
];
557 unsigned int sd_glockd_num
;
561 struct list_head sd_quota_list
;
562 atomic_t sd_quota_count
;
563 spinlock_t sd_quota_spin
;
564 struct mutex sd_quota_mutex
;
566 unsigned int sd_quota_slots
;
567 unsigned int sd_quota_chunks
;
568 unsigned char **sd_quota_bitmap
;
570 uint64_t sd_quota_sync_gen
;
571 unsigned long sd_quota_sync_time
;
575 spinlock_t sd_log_lock
;
577 unsigned int sd_log_blks_reserved
;
578 unsigned int sd_log_commited_buf
;
579 unsigned int sd_log_commited_revoke
;
581 unsigned int sd_log_num_gl
;
582 unsigned int sd_log_num_buf
;
583 unsigned int sd_log_num_revoke
;
584 unsigned int sd_log_num_rg
;
585 unsigned int sd_log_num_databuf
;
586 unsigned int sd_log_num_jdata
;
587 unsigned int sd_log_num_hdrs
;
589 struct list_head sd_log_le_gl
;
590 struct list_head sd_log_le_buf
;
591 struct list_head sd_log_le_revoke
;
592 struct list_head sd_log_le_rg
;
593 struct list_head sd_log_le_databuf
;
595 unsigned int sd_log_blks_free
;
596 struct mutex sd_log_reserve_mutex
;
598 uint64_t sd_log_sequence
;
599 unsigned int sd_log_head
;
600 unsigned int sd_log_tail
;
603 unsigned long sd_log_flush_time
;
604 struct rw_semaphore sd_log_flush_lock
;
605 struct list_head sd_log_flush_list
;
607 unsigned int sd_log_flush_head
;
608 uint64_t sd_log_flush_wrapped
;
610 struct list_head sd_ail1_list
;
611 struct list_head sd_ail2_list
;
612 uint64_t sd_ail_sync_gen
;
616 struct list_head sd_revoke_list
;
617 unsigned int sd_replay_tail
;
619 unsigned int sd_found_blocks
;
620 unsigned int sd_found_revokes
;
621 unsigned int sd_replayed_blocks
;
623 /* For quiescing the filesystem */
625 struct gfs2_holder sd_freeze_gh
;
626 struct mutex sd_freeze_lock
;
627 unsigned int sd_freeze_count
;
631 atomic_t sd_glock_count
;
632 atomic_t sd_glock_held_count
;
633 atomic_t sd_inode_count
;
634 atomic_t sd_reclaimed
;
636 char sd_fsname
[GFS2_FSNAME_LEN
];
637 char sd_table_name
[GFS2_FSNAME_LEN
];
638 char sd_proto_name
[GFS2_FSNAME_LEN
];
642 unsigned long sd_last_warning
;
643 struct vfsmount
*sd_gfs2mnt
;
646 #endif /* __INCORE_DOT_H__ */