2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2008 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__
14 #include <linux/workqueue.h>
16 #define DIO_WAIT 0x00000010
17 #define DIO_METADATA 0x00000020
18 #define DIO_ALL 0x00000100
20 struct gfs2_log_operations
;
21 struct gfs2_log_element
;
24 struct gfs2_quota_data
;
30 typedef void (*gfs2_glop_bh_t
) (struct gfs2_glock
*gl
, unsigned int ret
);
32 struct gfs2_log_header_host
{
33 u64 lh_sequence
; /* Sequence number of this transaction */
34 u32 lh_flags
; /* GFS2_LOG_HEAD_... */
35 u32 lh_tail
; /* Block number of log tail */
41 * Structure of operations that are associated with each
42 * type of element in the log.
45 struct gfs2_log_operations
{
46 void (*lo_add
) (struct gfs2_sbd
*sdp
, struct gfs2_log_element
*le
);
47 void (*lo_before_commit
) (struct gfs2_sbd
*sdp
);
48 void (*lo_after_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_ail
*ai
);
49 void (*lo_before_scan
) (struct gfs2_jdesc
*jd
,
50 struct gfs2_log_header_host
*head
, int pass
);
51 int (*lo_scan_elements
) (struct gfs2_jdesc
*jd
, unsigned int start
,
52 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
54 void (*lo_after_scan
) (struct gfs2_jdesc
*jd
, int error
, int pass
);
58 struct gfs2_log_element
{
59 struct list_head le_list
;
60 const struct gfs2_log_operations
*le_ops
;
64 struct buffer_head
*bi_bh
;
71 struct gfs2_rgrp_host
{
78 struct list_head rd_list
; /* Link with superblock */
79 struct list_head rd_list_mru
;
80 struct list_head rd_recent
; /* Recently used rgrps */
81 struct gfs2_glock
*rd_gl
; /* Glock for this rgrp */
82 u64 rd_addr
; /* grp block disk address */
83 u64 rd_data0
; /* first data location */
84 u32 rd_length
; /* length of rgrp header in fs blocks */
85 u32 rd_data
; /* num of data blocks in rgrp */
86 u32 rd_bitbytes
; /* number of bytes in data bitmaps */
87 struct gfs2_rgrp_host rd_rg
;
89 struct gfs2_bitmap
*rd_bits
;
90 unsigned int rd_bh_count
;
91 struct mutex rd_mutex
;
93 struct gfs2_log_element rd_le
;
94 u32 rd_last_alloc_data
;
95 u32 rd_last_alloc_meta
;
96 struct gfs2_sbd
*rd_sbd
;
97 unsigned char rd_flags
;
98 #define GFS2_RDF_CHECK 0x01 /* Need to check for unlinked inodes */
99 #define GFS2_RDF_NOALLOC 0x02 /* rg prohibits allocation */
102 enum gfs2_state_bits
{
103 BH_Pinned
= BH_PrivateStart
,
104 BH_Escaped
= BH_PrivateStart
+ 1,
107 BUFFER_FNS(Pinned
, pinned
)
108 TAS_BUFFER_FNS(Pinned
, pinned
)
109 BUFFER_FNS(Escaped
, escaped
)
110 TAS_BUFFER_FNS(Escaped
, escaped
)
112 struct gfs2_bufdata
{
113 struct buffer_head
*bd_bh
;
114 struct gfs2_glock
*bd_gl
;
117 struct list_head list_tr
;
120 #define bd_list_tr u.list_tr
121 #define bd_blkno u.blkno
123 struct gfs2_log_element bd_le
;
125 struct gfs2_ail
*bd_ail
;
126 struct list_head bd_ail_st_list
;
127 struct list_head bd_ail_gl_list
;
130 struct gfs2_glock_operations
{
131 void (*go_xmote_th
) (struct gfs2_glock
*gl
);
132 void (*go_xmote_bh
) (struct gfs2_glock
*gl
);
133 void (*go_inval
) (struct gfs2_glock
*gl
, int flags
);
134 int (*go_demote_ok
) (struct gfs2_glock
*gl
);
135 int (*go_lock
) (struct gfs2_holder
*gh
);
136 void (*go_unlock
) (struct gfs2_holder
*gh
);
138 const unsigned long go_min_hold_time
;
150 struct list_head gh_list
;
152 struct gfs2_glock
*gh_gl
;
153 struct pid
*gh_owner_pid
;
154 unsigned int gh_state
;
158 unsigned long gh_iflags
;
166 GLF_PENDING_DEMOTE
= 4,
168 GLF_DEMOTE_IN_PROGRESS
= 6,
174 struct hlist_node gl_list
;
175 unsigned long gl_flags
; /* GLF_... */
176 struct lm_lockname gl_name
;
181 unsigned int gl_state
;
182 unsigned int gl_hash
;
183 unsigned int gl_demote_state
; /* state requested by remote node */
184 unsigned long gl_demote_time
; /* time of first demote request */
185 struct pid
*gl_owner_pid
;
187 struct list_head gl_holders
;
188 struct list_head gl_waiters1
; /* HIF_MUTEX */
189 struct list_head gl_waiters3
; /* HIF_PROMOTE */
191 const struct gfs2_glock_operations
*gl_ops
;
193 struct gfs2_holder
*gl_req_gh
;
197 atomic_t gl_lvb_count
;
200 unsigned long gl_stamp
;
201 unsigned long gl_tchange
;
204 struct list_head gl_reclaim
;
206 struct gfs2_sbd
*gl_sbd
;
208 struct inode
*gl_aspace
;
209 struct list_head gl_ail_list
;
210 atomic_t gl_ail_count
;
211 struct delayed_work gl_work
;
217 struct gfs2_quota_data
*al_qd
[2*MAXQUOTAS
];
218 struct gfs2_holder al_qd_ghs
[2*MAXQUOTAS
];
219 unsigned int al_qd_num
;
221 u32 al_requested
; /* Filled in by caller of gfs2_inplace_reserve() */
222 u32 al_alloced
; /* Filled in by gfs2_alloc_*() */
224 /* Filled in by gfs2_inplace_reserve() */
226 unsigned int al_line
;
228 struct gfs2_holder al_ri_gh
;
229 struct gfs2_holder al_rgd_gh
;
230 struct gfs2_rgrpd
*al_rgd
;
240 struct gfs2_dinode_host
{
241 u64 di_size
; /* number of bytes in file */
242 u64 di_blocks
; /* number of blocks in file */
243 u64 di_goal_meta
; /* rgrp to alloc from next */
244 u64 di_goal_data
; /* data block goal */
245 u64 di_generation
; /* generation number for NFS */
246 u32 di_flags
; /* GFS2_DIF_... */
247 /* These only apply to directories */
248 u16 di_depth
; /* Number of bits in the table */
249 u32 di_entries
; /* The number of entries in the directory */
250 u64 di_eattr
; /* extended attribute block number */
254 struct inode i_inode
;
257 unsigned long i_flags
; /* GIF_... */
259 struct gfs2_dinode_host i_di
; /* To be replaced by ref to block */
261 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
262 struct gfs2_holder i_iopen_gh
;
263 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
264 struct gfs2_alloc
*i_alloc
;
267 struct rw_semaphore i_rw_mutex
;
272 * Since i_inode is the first element of struct gfs2_inode,
273 * this is effectively a cast.
275 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
277 return container_of(inode
, struct gfs2_inode
, i_inode
);
280 static inline struct gfs2_sbd
*GFS2_SB(const struct inode
*inode
)
282 return inode
->i_sb
->s_fs_info
;
286 struct mutex f_fl_mutex
;
287 struct gfs2_holder f_fl_gh
;
290 struct gfs2_revoke_replay
{
291 struct list_head rr_list
;
293 unsigned int rr_where
;
302 struct gfs2_quota_data
{
303 struct list_head qd_list
;
304 unsigned int qd_count
;
307 unsigned long qd_flags
; /* QDF_... */
312 unsigned int qd_slot
;
313 unsigned int qd_slot_count
;
315 struct buffer_head
*qd_bh
;
316 struct gfs2_quota_change
*qd_bh_qc
;
317 unsigned int qd_bh_count
;
319 struct gfs2_glock
*qd_gl
;
320 struct gfs2_quota_lvb qd_qb
;
323 unsigned long qd_last_warn
;
324 unsigned long qd_last_touched
;
330 unsigned int tr_blocks
;
331 unsigned int tr_revokes
;
332 unsigned int tr_reserved
;
334 struct gfs2_holder tr_t_gh
;
338 unsigned int tr_num_buf
;
339 unsigned int tr_num_buf_new
;
340 unsigned int tr_num_databuf_new
;
341 unsigned int tr_num_buf_rm
;
342 unsigned int tr_num_databuf_rm
;
343 struct list_head tr_list_buf
;
345 unsigned int tr_num_revoke
;
346 unsigned int tr_num_revoke_rm
;
350 struct list_head ai_list
;
352 unsigned int ai_first
;
353 struct list_head ai_ail1_list
;
354 struct list_head ai_ail2_list
;
359 struct gfs2_journal_extent
{
360 struct list_head extent_list
;
362 unsigned int lblock
; /* First logical block */
363 u64 dblock
; /* First disk block */
368 struct list_head jd_list
;
369 struct list_head extent_list
;
371 struct inode
*jd_inode
;
375 unsigned int jd_blocks
;
378 struct gfs2_statfs_change_host
{
384 #define GFS2_GLOCKD_DEFAULT 1
385 #define GFS2_GLOCKD_MAX 16
387 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
388 #define GFS2_QUOTA_OFF 0
389 #define GFS2_QUOTA_ACCOUNT 1
390 #define GFS2_QUOTA_ON 2
392 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
393 #define GFS2_DATA_WRITEBACK 1
394 #define GFS2_DATA_ORDERED 2
397 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
398 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
399 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
400 int ar_spectator
; /* Don't get a journal because we're always RO */
401 int ar_ignore_local_fs
; /* Don't optimize even if local_fs is 1 */
402 int ar_localflocks
; /* Let the VFS do flock|fcntl locks for us */
403 int ar_localcaching
; /* Local-style caching (dangerous on multihost) */
404 int ar_debug
; /* Oops on errors instead of trying to be graceful */
405 int ar_upgrade
; /* Upgrade ondisk/multihost format */
406 unsigned int ar_num_glockd
; /* Number of glockd threads */
407 int ar_posix_acl
; /* Enable posix acls */
408 int ar_quota
; /* off/account/on */
409 int ar_suiddir
; /* suiddir support */
410 int ar_data
; /* ordered/writeback */
416 unsigned int gt_demote_secs
; /* Cache retention for unheld glock */
417 unsigned int gt_incore_log_blocks
;
418 unsigned int gt_log_flush_secs
;
420 unsigned int gt_recoverd_secs
;
421 unsigned int gt_logd_secs
;
422 unsigned int gt_quotad_secs
;
424 unsigned int gt_quota_simul_sync
; /* Max quotavals to sync at once */
425 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
426 unsigned int gt_quota_scale_num
; /* Numerator */
427 unsigned int gt_quota_scale_den
; /* Denominator */
428 unsigned int gt_quota_cache_secs
;
429 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
430 unsigned int gt_atime_quantum
; /* Min secs between atime updates */
431 unsigned int gt_new_files_jdata
;
432 unsigned int gt_new_files_directio
;
433 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
434 unsigned int gt_stall_secs
; /* Detects trouble! */
435 unsigned int gt_complain_secs
;
436 unsigned int gt_statfs_quantum
;
437 unsigned int gt_statfs_slow
;
441 SDF_JOURNAL_CHECKED
= 0,
442 SDF_JOURNAL_LIVE
= 1,
447 #define GFS2_FSNAME_LEN 256
449 struct gfs2_inum_host
{
454 struct gfs2_sb_host
{
460 u32 sb_multihost_format
;
464 struct gfs2_inum_host sb_master_dir
;
465 struct gfs2_inum_host sb_root_dir
;
467 char sb_lockproto
[GFS2_LOCKNAME_LEN
];
468 char sb_locktable
[GFS2_LOCKNAME_LEN
];
472 struct super_block
*sd_vfs
;
473 struct super_block
*sd_vfs_meta
;
474 struct kobject sd_kobj
;
475 unsigned long sd_flags
; /* SDF_... */
476 struct gfs2_sb_host sd_sb
;
478 /* Constants computed on mount */
482 u32 sd_diptrs
; /* Number of pointers in a dinode */
483 u32 sd_inptrs
; /* Number of pointers in a indirect block */
484 u32 sd_jbsize
; /* Size of a journaled data block */
485 u32 sd_hash_bsize
; /* sizeof(exhash block) */
486 u32 sd_hash_bsize_shift
;
487 u32 sd_hash_ptrs
; /* Number of pointers in a hash block */
489 u32 sd_max_dirres
; /* Max blocks needed to add a directory entry */
490 u32 sd_max_height
; /* Max height of a file's metadata tree */
491 u64 sd_heightsize
[GFS2_MAX_META_HEIGHT
+ 1];
492 u32 sd_max_jheight
; /* Max height of journaled file's meta tree */
493 u64 sd_jheightsize
[GFS2_MAX_META_HEIGHT
+ 1];
495 struct gfs2_args sd_args
; /* Mount arguments */
496 struct gfs2_tune sd_tune
; /* Filesystem tuning structure */
500 struct lm_lockstruct sd_lockstruct
;
501 struct list_head sd_reclaim_list
;
502 spinlock_t sd_reclaim_lock
;
503 wait_queue_head_t sd_reclaim_wq
;
504 atomic_t sd_reclaim_count
;
505 struct gfs2_holder sd_live_gh
;
506 struct gfs2_glock
*sd_rename_gl
;
507 struct gfs2_glock
*sd_trans_gl
;
511 struct inode
*sd_master_dir
;
512 struct inode
*sd_jindex
;
513 struct inode
*sd_inum_inode
;
514 struct inode
*sd_statfs_inode
;
515 struct inode
*sd_ir_inode
;
516 struct inode
*sd_sc_inode
;
517 struct inode
*sd_qc_inode
;
518 struct inode
*sd_rindex
;
519 struct inode
*sd_quota_inode
;
523 struct mutex sd_inum_mutex
;
527 spinlock_t sd_statfs_spin
;
528 struct gfs2_statfs_change_host sd_statfs_master
;
529 struct gfs2_statfs_change_host sd_statfs_local
;
530 unsigned long sd_statfs_sync_time
;
532 /* Resource group stuff */
535 spinlock_t sd_rindex_spin
;
536 struct mutex sd_rindex_mutex
;
537 struct list_head sd_rindex_list
;
538 struct list_head sd_rindex_mru_list
;
539 struct list_head sd_rindex_recent_list
;
540 struct gfs2_rgrpd
*sd_rindex_forward
;
541 unsigned int sd_rgrps
;
543 /* Journal index stuff */
545 struct list_head sd_jindex_list
;
546 spinlock_t sd_jindex_spin
;
547 struct mutex sd_jindex_mutex
;
548 unsigned int sd_journals
;
549 unsigned long sd_jindex_refresh_time
;
551 struct gfs2_jdesc
*sd_jdesc
;
552 struct gfs2_holder sd_journal_gh
;
553 struct gfs2_holder sd_jinode_gh
;
555 struct gfs2_holder sd_ir_gh
;
556 struct gfs2_holder sd_sc_gh
;
557 struct gfs2_holder sd_qc_gh
;
561 struct task_struct
*sd_recoverd_process
;
562 struct task_struct
*sd_logd_process
;
563 struct task_struct
*sd_quotad_process
;
564 struct task_struct
*sd_glockd_process
[GFS2_GLOCKD_MAX
];
565 unsigned int sd_glockd_num
;
569 struct list_head sd_quota_list
;
570 atomic_t sd_quota_count
;
571 spinlock_t sd_quota_spin
;
572 struct mutex sd_quota_mutex
;
574 unsigned int sd_quota_slots
;
575 unsigned int sd_quota_chunks
;
576 unsigned char **sd_quota_bitmap
;
578 u64 sd_quota_sync_gen
;
579 unsigned long sd_quota_sync_time
;
583 spinlock_t sd_log_lock
;
585 unsigned int sd_log_blks_reserved
;
586 unsigned int sd_log_commited_buf
;
587 unsigned int sd_log_commited_databuf
;
588 unsigned int sd_log_commited_revoke
;
590 unsigned int sd_log_num_buf
;
591 unsigned int sd_log_num_revoke
;
592 unsigned int sd_log_num_rg
;
593 unsigned int sd_log_num_databuf
;
595 struct list_head sd_log_le_buf
;
596 struct list_head sd_log_le_revoke
;
597 struct list_head sd_log_le_rg
;
598 struct list_head sd_log_le_databuf
;
599 struct list_head sd_log_le_ordered
;
601 atomic_t sd_log_blks_free
;
602 struct mutex sd_log_reserve_mutex
;
605 unsigned int sd_log_head
;
606 unsigned int sd_log_tail
;
609 unsigned long sd_log_flush_time
;
610 struct rw_semaphore sd_log_flush_lock
;
611 atomic_t sd_log_in_flight
;
612 wait_queue_head_t sd_log_flush_wait
;
614 unsigned int sd_log_flush_head
;
615 u64 sd_log_flush_wrapped
;
617 struct list_head sd_ail1_list
;
618 struct list_head sd_ail2_list
;
623 struct list_head sd_revoke_list
;
624 unsigned int sd_replay_tail
;
626 unsigned int sd_found_blocks
;
627 unsigned int sd_found_revokes
;
628 unsigned int sd_replayed_blocks
;
630 /* For quiescing the filesystem */
632 struct gfs2_holder sd_freeze_gh
;
633 struct mutex sd_freeze_lock
;
634 unsigned int sd_freeze_count
;
638 atomic_t sd_glock_count
;
639 atomic_t sd_glock_held_count
;
640 atomic_t sd_inode_count
;
641 atomic_t sd_reclaimed
;
643 char sd_fsname
[GFS2_FSNAME_LEN
];
644 char sd_table_name
[GFS2_FSNAME_LEN
];
645 char sd_proto_name
[GFS2_FSNAME_LEN
];
649 unsigned long sd_last_warning
;
650 struct vfsmount
*sd_gfs2mnt
;
651 struct dentry
*debugfs_dir
; /* debugfs directory */
652 struct dentry
*debugfs_dentry_glocks
; /* for debugfs */
655 #endif /* __INCORE_DOT_H__ */