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__
15 #define DIO_WAIT 0x00000010
16 #define DIO_METADATA 0x00000020
17 #define DIO_DATA 0x00000040
18 #define DIO_RELEASE 0x00000080
19 #define DIO_ALL 0x00000100
21 struct gfs2_log_operations
;
22 struct gfs2_log_element
;
25 struct gfs2_quota_data
;
31 typedef void (*gfs2_glop_bh_t
) (struct gfs2_glock
*gl
, unsigned int ret
);
34 * Structure of operations that are associated with each
35 * type of element in the log.
38 struct gfs2_log_operations
{
39 void (*lo_add
) (struct gfs2_sbd
*sdp
, struct gfs2_log_element
*le
);
40 void (*lo_incore_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
);
41 void (*lo_before_commit
) (struct gfs2_sbd
*sdp
);
42 void (*lo_after_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_ail
*ai
);
43 void (*lo_before_scan
) (struct gfs2_jdesc
*jd
,
44 struct gfs2_log_header
*head
, int pass
);
45 int (*lo_scan_elements
) (struct gfs2_jdesc
*jd
, unsigned int start
,
46 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
48 void (*lo_after_scan
) (struct gfs2_jdesc
*jd
, int error
, int pass
);
52 struct gfs2_log_element
{
53 struct list_head le_list
;
54 const struct gfs2_log_operations
*le_ops
;
58 struct buffer_head
*bi_bh
;
66 struct list_head rd_list
; /* Link with superblock */
67 struct list_head rd_list_mru
;
68 struct list_head rd_recent
; /* Recently used rgrps */
69 struct gfs2_glock
*rd_gl
; /* Glock for this rgrp */
70 struct gfs2_rindex rd_ri
;
71 struct gfs2_rgrp rd_rg
;
73 struct gfs2_bitmap
*rd_bits
;
74 unsigned int rd_bh_count
;
75 struct mutex rd_mutex
;
77 struct gfs2_log_element rd_le
;
78 u32 rd_last_alloc_data
;
79 u32 rd_last_alloc_meta
;
80 struct gfs2_sbd
*rd_sbd
;
83 enum gfs2_state_bits
{
84 BH_Pinned
= BH_PrivateStart
,
85 BH_Escaped
= BH_PrivateStart
+ 1,
88 BUFFER_FNS(Pinned
, pinned
)
89 TAS_BUFFER_FNS(Pinned
, pinned
)
90 BUFFER_FNS(Escaped
, escaped
)
91 TAS_BUFFER_FNS(Escaped
, escaped
)
94 struct buffer_head
*bd_bh
;
95 struct gfs2_glock
*bd_gl
;
97 struct list_head bd_list_tr
;
98 struct gfs2_log_element bd_le
;
100 struct gfs2_ail
*bd_ail
;
101 struct list_head bd_ail_st_list
;
102 struct list_head bd_ail_gl_list
;
105 struct gfs2_glock_operations
{
106 void (*go_xmote_th
) (struct gfs2_glock
* gl
, unsigned int state
,
108 void (*go_xmote_bh
) (struct gfs2_glock
* gl
);
109 void (*go_drop_th
) (struct gfs2_glock
* gl
);
110 void (*go_drop_bh
) (struct gfs2_glock
* gl
);
111 void (*go_sync
) (struct gfs2_glock
* gl
, int flags
);
112 void (*go_inval
) (struct gfs2_glock
* gl
, int flags
);
113 int (*go_demote_ok
) (struct gfs2_glock
* gl
);
114 int (*go_lock
) (struct gfs2_holder
* gh
);
115 void (*go_unlock
) (struct gfs2_holder
* gh
);
116 void (*go_callback
) (struct gfs2_glock
* gl
, unsigned int state
);
117 void (*go_greedy
) (struct gfs2_glock
* gl
);
137 struct list_head gh_list
;
139 struct gfs2_glock
*gh_gl
;
140 struct task_struct
*gh_owner
;
141 unsigned int gh_state
;
145 unsigned long gh_iflags
;
146 struct completion gh_wait
;
155 GLF_SKIP_WAITERS2
= 6,
160 struct hlist_node gl_list
;
161 unsigned long gl_flags
; /* GLF_... */
162 struct lm_lockname gl_name
;
167 unsigned int gl_state
;
168 unsigned int gl_hash
;
169 struct task_struct
*gl_owner
;
171 struct list_head gl_holders
;
172 struct list_head gl_waiters1
; /* HIF_MUTEX */
173 struct list_head gl_waiters2
; /* HIF_DEMOTE, HIF_GREEDY */
174 struct list_head gl_waiters3
; /* HIF_PROMOTE */
176 const struct gfs2_glock_operations
*gl_ops
;
178 struct gfs2_holder
*gl_req_gh
;
179 gfs2_glop_bh_t gl_req_bh
;
183 atomic_t gl_lvb_count
;
186 unsigned long gl_stamp
;
189 struct list_head gl_reclaim
;
191 struct gfs2_sbd
*gl_sbd
;
193 struct inode
*gl_aspace
;
194 struct gfs2_log_element gl_le
;
195 struct list_head gl_ail_list
;
196 atomic_t gl_ail_count
;
202 struct gfs2_quota_data
*al_qd
[2*MAXQUOTAS
];
203 struct gfs2_holder al_qd_ghs
[2*MAXQUOTAS
];
204 unsigned int al_qd_num
;
206 u32 al_requested
; /* Filled in by caller of gfs2_inplace_reserve() */
207 u32 al_alloced
; /* Filled in by gfs2_alloc_*() */
209 /* Filled in by gfs2_inplace_reserve() */
211 unsigned int al_line
;
213 struct gfs2_holder al_ri_gh
;
214 struct gfs2_holder al_rgd_gh
;
215 struct gfs2_rgrpd
*al_rgd
;
226 struct inode i_inode
;
227 struct gfs2_inum i_num
;
229 unsigned long i_flags
; /* GIF_... */
232 struct gfs2_dinode i_di
; /* To be replaced by ref to block */
234 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
235 struct gfs2_holder i_iopen_gh
;
236 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
237 struct gfs2_alloc i_alloc
;
241 struct rw_semaphore i_rw_mutex
;
242 unsigned int i_greedy
;
243 unsigned long i_last_pfault
;
245 struct buffer_head
*i_cache
[GFS2_MAX_META_HEIGHT
];
249 * Since i_inode is the first element of struct gfs2_inode,
250 * this is effectively a cast.
252 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
254 return container_of(inode
, struct gfs2_inode
, i_inode
);
258 static inline struct gfs2_sbd
*GFS2_SB(struct inode
*inode
)
260 return inode
->i_sb
->s_fs_info
;
264 GFF_DID_DIRECT_ALLOC
= 0,
269 unsigned long f_flags
; /* GFF_... */
270 struct mutex f_fl_mutex
;
271 struct gfs2_holder f_fl_gh
;
275 struct gfs2_log_element rv_le
;
279 struct gfs2_revoke_replay
{
280 struct list_head rr_list
;
282 unsigned int rr_where
;
291 struct gfs2_quota_lvb
{
294 __be64 qb_limit
; /* Hard limit of # blocks to alloc */
295 __be64 qb_warn
; /* Warn user when alloc is above this # */
296 __be64 qb_value
; /* Current # blocks allocated */
299 struct gfs2_quota_data
{
300 struct list_head qd_list
;
301 unsigned int qd_count
;
304 unsigned long qd_flags
; /* QDF_... */
309 unsigned int qd_slot
;
310 unsigned int qd_slot_count
;
312 struct buffer_head
*qd_bh
;
313 struct gfs2_quota_change
*qd_bh_qc
;
314 unsigned int qd_bh_count
;
316 struct gfs2_glock
*qd_gl
;
317 struct gfs2_quota_lvb qd_qb
;
320 unsigned long qd_last_warn
;
321 unsigned long qd_last_touched
;
324 struct gfs2_log_buf
{
325 struct list_head lb_list
;
326 struct buffer_head
*lb_bh
;
327 struct buffer_head
*lb_real
;
333 unsigned int tr_blocks
;
334 unsigned int tr_revokes
;
335 unsigned int tr_reserved
;
337 struct gfs2_holder tr_t_gh
;
341 unsigned int tr_num_buf
;
342 unsigned int tr_num_buf_new
;
343 unsigned int tr_num_buf_rm
;
344 struct list_head tr_list_buf
;
346 unsigned int tr_num_revoke
;
347 unsigned int tr_num_revoke_rm
;
351 struct list_head ai_list
;
353 unsigned int ai_first
;
354 struct list_head ai_ail1_list
;
355 struct list_head ai_ail2_list
;
361 struct list_head jd_list
;
363 struct inode
*jd_inode
;
367 unsigned int jd_blocks
;
370 #define GFS2_GLOCKD_DEFAULT 1
371 #define GFS2_GLOCKD_MAX 16
373 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
374 #define GFS2_QUOTA_OFF 0
375 #define GFS2_QUOTA_ACCOUNT 1
376 #define GFS2_QUOTA_ON 2
378 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
379 #define GFS2_DATA_WRITEBACK 1
380 #define GFS2_DATA_ORDERED 2
383 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
384 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
385 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
386 int ar_spectator
; /* Don't get a journal because we're always RO */
387 int ar_ignore_local_fs
; /* Don't optimize even if local_fs is 1 */
388 int ar_localflocks
; /* Let the VFS do flock|fcntl locks for us */
389 int ar_localcaching
; /* Local-style caching (dangerous on multihost) */
390 int ar_debug
; /* Oops on errors instead of trying to be graceful */
391 int ar_upgrade
; /* Upgrade ondisk/multihost format */
392 unsigned int ar_num_glockd
; /* Number of glockd threads */
393 int ar_posix_acl
; /* Enable posix acls */
394 int ar_quota
; /* off/account/on */
395 int ar_suiddir
; /* suiddir support */
396 int ar_data
; /* ordered/writeback */
402 unsigned int gt_ilimit
;
403 unsigned int gt_ilimit_tries
;
404 unsigned int gt_ilimit_min
;
405 unsigned int gt_demote_secs
; /* Cache retention for unheld glock */
406 unsigned int gt_incore_log_blocks
;
407 unsigned int gt_log_flush_secs
;
408 unsigned int gt_jindex_refresh_secs
; /* Check for new journal index */
410 unsigned int gt_scand_secs
;
411 unsigned int gt_recoverd_secs
;
412 unsigned int gt_logd_secs
;
413 unsigned int gt_quotad_secs
;
415 unsigned int gt_quota_simul_sync
; /* Max quotavals to sync at once */
416 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
417 unsigned int gt_quota_scale_num
; /* Numerator */
418 unsigned int gt_quota_scale_den
; /* Denominator */
419 unsigned int gt_quota_cache_secs
;
420 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
421 unsigned int gt_atime_quantum
; /* Min secs between atime updates */
422 unsigned int gt_new_files_jdata
;
423 unsigned int gt_new_files_directio
;
424 unsigned int gt_max_atomic_write
; /* Split big writes into this size */
425 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
426 unsigned int gt_lockdump_size
;
427 unsigned int gt_stall_secs
; /* Detects trouble! */
428 unsigned int gt_complain_secs
;
429 unsigned int gt_reclaim_limit
; /* Max num of glocks in reclaim list */
430 unsigned int gt_entries_per_readdir
;
431 unsigned int gt_prefetch_secs
; /* Usage window for prefetched glocks */
432 unsigned int gt_greedy_default
;
433 unsigned int gt_greedy_quantum
;
434 unsigned int gt_greedy_max
;
435 unsigned int gt_statfs_quantum
;
436 unsigned int gt_statfs_slow
;
440 SDF_JOURNAL_CHECKED
= 0,
441 SDF_JOURNAL_LIVE
= 1,
446 #define GFS2_FSNAME_LEN 256
449 struct super_block
*sd_vfs
;
450 struct super_block
*sd_vfs_meta
;
451 struct kobject sd_kobj
;
452 unsigned long sd_flags
; /* SDF_... */
453 struct gfs2_sb sd_sb
;
455 /* Constants computed on mount */
459 u32 sd_diptrs
; /* Number of pointers in a dinode */
460 u32 sd_inptrs
; /* Number of pointers in a indirect block */
461 u32 sd_jbsize
; /* Size of a journaled data block */
462 u32 sd_hash_bsize
; /* sizeof(exhash block) */
463 u32 sd_hash_bsize_shift
;
464 u32 sd_hash_ptrs
; /* Number of pointers in a hash block */
466 u32 sd_max_dirres
; /* Max blocks needed to add a directory entry */
467 u32 sd_max_height
; /* Max height of a file's metadata tree */
468 u64 sd_heightsize
[GFS2_MAX_META_HEIGHT
];
469 u32 sd_max_jheight
; /* Max height of journaled file's meta tree */
470 u64 sd_jheightsize
[GFS2_MAX_META_HEIGHT
];
472 struct gfs2_args sd_args
; /* Mount arguments */
473 struct gfs2_tune sd_tune
; /* Filesystem tuning structure */
477 struct lm_lockstruct sd_lockstruct
;
478 struct list_head sd_reclaim_list
;
479 spinlock_t sd_reclaim_lock
;
480 wait_queue_head_t sd_reclaim_wq
;
481 atomic_t sd_reclaim_count
;
482 struct gfs2_holder sd_live_gh
;
483 struct gfs2_glock
*sd_rename_gl
;
484 struct gfs2_glock
*sd_trans_gl
;
488 struct inode
*sd_master_dir
;
489 struct inode
*sd_jindex
;
490 struct inode
*sd_inum_inode
;
491 struct inode
*sd_statfs_inode
;
492 struct inode
*sd_ir_inode
;
493 struct inode
*sd_sc_inode
;
494 struct inode
*sd_qc_inode
;
495 struct inode
*sd_rindex
;
496 struct inode
*sd_quota_inode
;
500 struct mutex sd_inum_mutex
;
504 spinlock_t sd_statfs_spin
;
505 struct mutex sd_statfs_mutex
;
506 struct gfs2_statfs_change sd_statfs_master
;
507 struct gfs2_statfs_change sd_statfs_local
;
508 unsigned long sd_statfs_sync_time
;
510 /* Resource group stuff */
513 spinlock_t sd_rindex_spin
;
514 struct mutex sd_rindex_mutex
;
515 struct list_head sd_rindex_list
;
516 struct list_head sd_rindex_mru_list
;
517 struct list_head sd_rindex_recent_list
;
518 struct gfs2_rgrpd
*sd_rindex_forward
;
519 unsigned int sd_rgrps
;
521 /* Journal index stuff */
523 struct list_head sd_jindex_list
;
524 spinlock_t sd_jindex_spin
;
525 struct mutex sd_jindex_mutex
;
526 unsigned int sd_journals
;
527 unsigned long sd_jindex_refresh_time
;
529 struct gfs2_jdesc
*sd_jdesc
;
530 struct gfs2_holder sd_journal_gh
;
531 struct gfs2_holder sd_jinode_gh
;
533 struct gfs2_holder sd_ir_gh
;
534 struct gfs2_holder sd_sc_gh
;
535 struct gfs2_holder sd_qc_gh
;
539 struct task_struct
*sd_scand_process
;
540 struct task_struct
*sd_recoverd_process
;
541 struct task_struct
*sd_logd_process
;
542 struct task_struct
*sd_quotad_process
;
543 struct task_struct
*sd_glockd_process
[GFS2_GLOCKD_MAX
];
544 unsigned int sd_glockd_num
;
548 struct list_head sd_quota_list
;
549 atomic_t sd_quota_count
;
550 spinlock_t sd_quota_spin
;
551 struct mutex sd_quota_mutex
;
553 unsigned int sd_quota_slots
;
554 unsigned int sd_quota_chunks
;
555 unsigned char **sd_quota_bitmap
;
557 u64 sd_quota_sync_gen
;
558 unsigned long sd_quota_sync_time
;
562 spinlock_t sd_log_lock
;
564 unsigned int sd_log_blks_reserved
;
565 unsigned int sd_log_commited_buf
;
566 unsigned int sd_log_commited_revoke
;
568 unsigned int sd_log_num_gl
;
569 unsigned int sd_log_num_buf
;
570 unsigned int sd_log_num_revoke
;
571 unsigned int sd_log_num_rg
;
572 unsigned int sd_log_num_databuf
;
573 unsigned int sd_log_num_jdata
;
574 unsigned int sd_log_num_hdrs
;
576 struct list_head sd_log_le_gl
;
577 struct list_head sd_log_le_buf
;
578 struct list_head sd_log_le_revoke
;
579 struct list_head sd_log_le_rg
;
580 struct list_head sd_log_le_databuf
;
582 unsigned int sd_log_blks_free
;
583 struct mutex sd_log_reserve_mutex
;
586 unsigned int sd_log_head
;
587 unsigned int sd_log_tail
;
590 unsigned long sd_log_flush_time
;
591 struct rw_semaphore sd_log_flush_lock
;
592 struct list_head sd_log_flush_list
;
594 unsigned int sd_log_flush_head
;
595 u64 sd_log_flush_wrapped
;
597 struct list_head sd_ail1_list
;
598 struct list_head sd_ail2_list
;
603 struct list_head sd_revoke_list
;
604 unsigned int sd_replay_tail
;
606 unsigned int sd_found_blocks
;
607 unsigned int sd_found_revokes
;
608 unsigned int sd_replayed_blocks
;
610 /* For quiescing the filesystem */
612 struct gfs2_holder sd_freeze_gh
;
613 struct mutex sd_freeze_lock
;
614 unsigned int sd_freeze_count
;
618 atomic_t sd_glock_count
;
619 atomic_t sd_glock_held_count
;
620 atomic_t sd_inode_count
;
621 atomic_t sd_reclaimed
;
623 char sd_fsname
[GFS2_FSNAME_LEN
];
624 char sd_table_name
[GFS2_FSNAME_LEN
];
625 char sd_proto_name
[GFS2_FSNAME_LEN
];
629 unsigned long sd_last_warning
;
630 struct vfsmount
*sd_gfs2mnt
;
633 #endif /* __INCORE_DOT_H__ */