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/kobject.h>
15 #include <linux/workqueue.h>
16 #include <linux/dlm.h>
17 #include <linux/buffer_head.h>
18 #include <linux/rcupdate.h>
19 #include <linux/rculist_bl.h>
20 #include <linux/completion.h>
21 #include <linux/rbtree.h>
22 #include <linux/ktime.h>
23 #include <linux/percpu.h>
24 #include <linux/lockref.h>
25 #include <linux/rhashtable.h>
27 #define DIO_WAIT 0x00000010
28 #define DIO_METADATA 0x00000020
30 struct gfs2_log_operations
;
34 struct gfs2_quota_data
;
40 typedef void (*gfs2_glop_bh_t
) (struct gfs2_glock
*gl
, unsigned int ret
);
42 struct gfs2_log_header_host
{
43 u64 lh_sequence
; /* Sequence number of this transaction */
44 u32 lh_flags
; /* GFS2_LOG_HEAD_... */
45 u32 lh_tail
; /* Block number of log tail */
50 * Structure of operations that are associated with each
51 * type of element in the log.
54 struct gfs2_log_operations
{
55 void (*lo_before_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
);
56 void (*lo_after_commit
) (struct gfs2_sbd
*sdp
, struct gfs2_trans
*tr
);
57 void (*lo_before_scan
) (struct gfs2_jdesc
*jd
,
58 struct gfs2_log_header_host
*head
, int pass
);
59 int (*lo_scan_elements
) (struct gfs2_jdesc
*jd
, unsigned int start
,
60 struct gfs2_log_descriptor
*ld
, __be64
*ptr
,
62 void (*lo_after_scan
) (struct gfs2_jdesc
*jd
, int error
, int pass
);
69 * Clone bitmaps (bi_clone):
71 * - When a block is freed, we remember the previous state of the block in the
72 * clone bitmap, and only mark the block as free in the real bitmap.
74 * - When looking for a block to allocate, we check for a free block in the
75 * clone bitmap, and if no clone bitmap exists, in the real bitmap.
77 * - For allocating a block, we mark it as allocated in the real bitmap, and if
78 * a clone bitmap exists, also in the clone bitmap.
80 * - At the end of a log_flush, we copy the real bitmap into the clone bitmap
81 * to make the clone bitmap reflect the current allocation state.
82 * (Alternatively, we could remove the clone bitmap.)
84 * The clone bitmaps are in-core only, and is never written to disk.
86 * These steps ensure that blocks which have been freed in a transaction cannot
87 * be reallocated in that same transaction.
90 struct buffer_head
*bi_bh
;
92 unsigned long bi_flags
;
100 struct rb_node rd_node
; /* Link with superblock */
101 struct gfs2_glock
*rd_gl
; /* Glock for this rgrp */
102 u64 rd_addr
; /* grp block disk address */
103 u64 rd_data0
; /* first data location */
104 u32 rd_length
; /* length of rgrp header in fs blocks */
105 u32 rd_data
; /* num of data blocks in rgrp */
106 u32 rd_bitbytes
; /* number of bytes in data bitmaps */
108 u32 rd_reserved
; /* number of blocks reserved */
112 struct gfs2_bitmap
*rd_bits
;
113 struct gfs2_sbd
*rd_sbd
;
114 struct gfs2_rgrp_lvb
*rd_rgl
;
117 u32 rd_extfail_pt
; /* extent failure point */
118 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
119 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
120 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
121 #define GFS2_RDF_PREFERRED 0x80000000 /* This rgrp is preferred */
122 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
123 spinlock_t rd_rsspin
; /* protects reservation related vars */
124 struct rb_root rd_rstree
; /* multi-block reservation tree */
128 struct gfs2_rgrpd
*rgd
;
129 u32 offset
; /* The offset is bitmap relative */
130 int bii
; /* Bitmap index */
133 static inline struct gfs2_bitmap
*rbm_bi(const struct gfs2_rbm
*rbm
)
135 return rbm
->rgd
->rd_bits
+ rbm
->bii
;
138 static inline u64
gfs2_rbm_to_block(const struct gfs2_rbm
*rbm
)
140 BUG_ON(rbm
->offset
>= rbm
->rgd
->rd_data
);
141 return rbm
->rgd
->rd_data0
+ (rbm_bi(rbm
)->bi_start
* GFS2_NBBY
) +
145 static inline bool gfs2_rbm_eq(const struct gfs2_rbm
*rbm1
,
146 const struct gfs2_rbm
*rbm2
)
148 return (rbm1
->rgd
== rbm2
->rgd
) && (rbm1
->bii
== rbm2
->bii
) &&
149 (rbm1
->offset
== rbm2
->offset
);
152 enum gfs2_state_bits
{
153 BH_Pinned
= BH_PrivateStart
,
154 BH_Escaped
= BH_PrivateStart
+ 1,
157 BUFFER_FNS(Pinned
, pinned
)
158 TAS_BUFFER_FNS(Pinned
, pinned
)
159 BUFFER_FNS(Escaped
, escaped
)
160 TAS_BUFFER_FNS(Escaped
, escaped
)
162 struct gfs2_bufdata
{
163 struct buffer_head
*bd_bh
;
164 struct gfs2_glock
*bd_gl
;
167 struct list_head bd_list
;
169 struct gfs2_trans
*bd_tr
;
170 struct list_head bd_ail_st_list
;
171 struct list_head bd_ail_gl_list
;
175 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
176 * prefix of lock_dlm_ gets awkward.
179 #define GDLM_STRNAME_BYTES 25
180 #define GDLM_LVB_SIZE 32
185 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
186 * held by failed nodes whose journals need recovery. Those locks should
187 * only be used for journal recovery until the journal recovery is done.
188 * This is set by the dlm recover_prep callback and cleared by the
189 * gfs2_control thread when journal recovery is complete. To avoid
190 * races between recover_prep setting and gfs2_control clearing, recover_spin
191 * is held while changing this bit and reading/writing recover_block
194 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
196 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
197 * recovery of all journals before allowing other nodes to mount the fs.
198 * This is cleared when FIRST_MOUNT_DONE is set.
200 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
201 * recovery of all journals, and now allows other nodes to mount the fs.
203 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
204 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
205 * control clearing BLOCK_LOCKS for further recoveries.
207 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
209 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
210 * and recover_done(), i.e. set while recover_block == recover_start.
217 DFL_FIRST_MOUNT_DONE
= 3,
220 DFL_DLM_RECOVERY
= 6,
224 * We are using struct lm_lockname as an rhashtable key. Avoid holes within
225 * the struct; padding at the end is fine.
229 struct gfs2_sbd
*ln_sbd
;
230 unsigned int ln_type
;
233 #define lm_name_equal(name1, name2) \
234 (((name1)->ln_number == (name2)->ln_number) && \
235 ((name1)->ln_type == (name2)->ln_type) && \
236 ((name1)->ln_sbd == (name2)->ln_sbd))
239 struct gfs2_glock_operations
{
240 void (*go_sync
) (struct gfs2_glock
*gl
);
241 int (*go_xmote_bh
) (struct gfs2_glock
*gl
, struct gfs2_holder
*gh
);
242 void (*go_inval
) (struct gfs2_glock
*gl
, int flags
);
243 int (*go_demote_ok
) (const struct gfs2_glock
*gl
);
244 int (*go_lock
) (struct gfs2_holder
*gh
);
245 void (*go_unlock
) (struct gfs2_holder
*gh
);
246 void (*go_dump
)(struct seq_file
*seq
, struct gfs2_glock
*gl
);
247 void (*go_callback
)(struct gfs2_glock
*gl
, bool remote
);
249 const unsigned long go_flags
;
250 #define GLOF_ASPACE 1
256 GFS2_LKS_SRTT
= 0, /* Non blocking smoothed round trip time */
257 GFS2_LKS_SRTTVAR
= 1, /* Non blocking smoothed variance */
258 GFS2_LKS_SRTTB
= 2, /* Blocking smoothed round trip time */
259 GFS2_LKS_SRTTVARB
= 3, /* Blocking smoothed variance */
260 GFS2_LKS_SIRT
= 4, /* Smoothed Inter-request time */
261 GFS2_LKS_SIRTVAR
= 5, /* Smoothed Inter-request variance */
262 GFS2_LKS_DCOUNT
= 6, /* Count of dlm requests */
263 GFS2_LKS_QCOUNT
= 7, /* Count of gfs2_holder queues */
267 struct gfs2_lkstats
{
268 u64 stats
[GFS2_NR_LKSTATS
];
273 HIF_HOLDER
= 6, /* Set for gh that "holds" the glock */
279 struct list_head gh_list
;
281 struct gfs2_glock
*gh_gl
;
282 struct pid
*gh_owner_pid
;
287 unsigned long gh_iflags
; /* HIF_... */
291 /* Number of quota types we support */
292 #define GFS2_MAXQUOTAS 2
294 struct gfs2_qadata
{ /* quota allocation data */
296 struct gfs2_quota_data
*qa_qd
[2 * GFS2_MAXQUOTAS
];
297 struct gfs2_holder qa_qd_ghs
[2 * GFS2_MAXQUOTAS
];
298 unsigned int qa_qd_num
;
301 /* Resource group multi-block reservation, in order of appearance:
303 Step 1. Function prepares to write, allocates a mb, sets the size hint.
304 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
305 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
306 Step 4. Bits are assigned from the rgrp based on either the reservation
310 struct gfs2_blkreserv
{
311 struct rb_node rs_node
; /* link to other block reservations */
312 struct gfs2_rbm rs_rbm
; /* Start of reservation */
313 u32 rs_free
; /* how many blocks are still free */
317 * Allocation parameters
318 * @target: The number of blocks we'd ideally like to allocate
319 * @aflags: The flags (e.g. Orlov flag)
321 * The intent is to gradually expand this structure over time in
322 * order to give more information, e.g. alignment, min extent size
323 * to the allocation code.
325 struct gfs2_alloc_parms
{
335 GLF_PENDING_DEMOTE
= 4,
336 GLF_DEMOTE_IN_PROGRESS
= 5,
339 GLF_INVALIDATE_IN_PROGRESS
= 8,
340 GLF_REPLY_PENDING
= 9,
345 GLF_OBJECT
= 14, /* Used only for tracing */
347 GLF_INODE_CREATING
= 16, /* Inode creation occurring */
351 unsigned long gl_flags
; /* GLF_... */
352 struct lm_lockname gl_name
;
354 struct lockref gl_lockref
;
356 /* State fields protected by gl_lockref.lock */
357 unsigned int gl_state
:2, /* Current state */
358 gl_target
:2, /* Target state */
359 gl_demote_state
:2, /* State requested by remote node */
360 gl_req
:2, /* State in last dlm request */
361 gl_reply
:8; /* Last reply from the dlm */
363 unsigned long gl_demote_time
; /* time of first demote request */
365 struct list_head gl_holders
;
367 const struct gfs2_glock_operations
*gl_ops
;
369 struct gfs2_lkstats gl_stats
;
370 struct dlm_lksb gl_lksb
;
371 unsigned long gl_tchange
;
374 struct list_head gl_lru
;
375 struct list_head gl_ail_list
;
376 atomic_t gl_ail_count
;
378 struct delayed_work gl_work
;
380 /* For inode and iopen glocks only */
381 struct work_struct gl_delete
;
382 /* For rgrp glocks only */
388 struct rcu_head gl_rcu
;
389 struct rhash_head gl_node
;
392 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
397 GIF_ALLOC_FAILED
= 2,
400 GIF_FREE_VFS_INODE
= 5,
401 GIF_GLOP_PENDING
= 6,
405 struct inode i_inode
;
410 unsigned long i_flags
; /* GIF_... */
411 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
412 struct gfs2_holder i_iopen_gh
;
413 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
414 struct gfs2_qadata
*i_qadata
; /* quota allocation data */
415 struct gfs2_holder i_rgd_gh
;
416 struct gfs2_blkreserv i_res
; /* rgrp multi-block reservation */
417 u64 i_goal
; /* goal block for allocations */
418 atomic_t i_sizehint
; /* hint of the write size */
419 struct rw_semaphore i_rw_mutex
;
420 struct list_head i_ordered
;
421 struct list_head i_trunc_list
;
422 __be64
*i_hash_cache
;
431 * Since i_inode is the first element of struct gfs2_inode,
432 * this is effectively a cast.
434 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
436 return container_of(inode
, struct gfs2_inode
, i_inode
);
439 static inline struct gfs2_sbd
*GFS2_SB(const struct inode
*inode
)
441 return inode
->i_sb
->s_fs_info
;
445 struct mutex f_fl_mutex
;
446 struct gfs2_holder f_fl_gh
;
449 struct gfs2_revoke_replay
{
450 struct list_head rr_list
;
452 unsigned int rr_where
;
462 struct gfs2_quota_data
{
463 struct hlist_bl_node qd_hlist
;
464 struct list_head qd_list
;
466 struct gfs2_sbd
*qd_sbd
;
467 struct lockref qd_lockref
;
468 struct list_head qd_lru
;
471 unsigned long qd_flags
; /* QDF_... */
476 unsigned int qd_slot
;
477 unsigned int qd_slot_count
;
479 struct buffer_head
*qd_bh
;
480 struct gfs2_quota_change
*qd_bh_qc
;
481 unsigned int qd_bh_count
;
483 struct gfs2_glock
*qd_gl
;
484 struct gfs2_quota_lvb qd_qb
;
487 unsigned long qd_last_warn
;
488 struct rcu_head qd_rcu
;
500 unsigned int tr_blocks
;
501 unsigned int tr_revokes
;
502 unsigned int tr_reserved
;
503 unsigned long tr_flags
;
505 unsigned int tr_num_buf_new
;
506 unsigned int tr_num_databuf_new
;
507 unsigned int tr_num_buf_rm
;
508 unsigned int tr_num_databuf_rm
;
509 unsigned int tr_num_revoke
;
510 unsigned int tr_num_revoke_rm
;
512 struct list_head tr_list
;
513 struct list_head tr_databuf
;
514 struct list_head tr_buf
;
516 unsigned int tr_first
;
517 struct list_head tr_ail1_list
;
518 struct list_head tr_ail2_list
;
521 struct gfs2_journal_extent
{
522 struct list_head list
;
524 unsigned int lblock
; /* First logical block */
525 u64 dblock
; /* First disk block */
530 struct list_head jd_list
;
531 struct list_head extent_list
;
532 unsigned int nr_extents
;
533 struct work_struct jd_work
;
534 struct inode
*jd_inode
;
535 unsigned long jd_flags
;
536 #define JDF_RECOVERY 1
538 unsigned int jd_blocks
;
539 int jd_recover_error
;
542 unsigned int jd_found_blocks
;
543 unsigned int jd_found_revokes
;
544 unsigned int jd_replayed_blocks
;
546 struct list_head jd_revoke_list
;
547 unsigned int jd_replay_tail
;
551 struct gfs2_statfs_change_host
{
557 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
558 #define GFS2_QUOTA_OFF 0
559 #define GFS2_QUOTA_ACCOUNT 1
560 #define GFS2_QUOTA_ON 2
562 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
563 #define GFS2_DATA_WRITEBACK 1
564 #define GFS2_DATA_ORDERED 2
566 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
567 #define GFS2_ERRORS_WITHDRAW 0
568 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
569 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
570 #define GFS2_ERRORS_PANIC 3
573 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
574 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
575 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
576 unsigned int ar_spectator
:1; /* Don't get a journal */
577 unsigned int ar_localflocks
:1; /* Let the VFS do flock|fcntl */
578 unsigned int ar_debug
:1; /* Oops on errors */
579 unsigned int ar_posix_acl
:1; /* Enable posix acls */
580 unsigned int ar_quota
:2; /* off/account/on */
581 unsigned int ar_suiddir
:1; /* suiddir support */
582 unsigned int ar_data
:2; /* ordered/writeback */
583 unsigned int ar_meta
:1; /* mount metafs */
584 unsigned int ar_discard
:1; /* discard requests */
585 unsigned int ar_errors
:2; /* errors=withdraw | panic */
586 unsigned int ar_nobarrier
:1; /* do not send barriers */
587 unsigned int ar_rgrplvb
:1; /* use lvbs for rgrp info */
588 unsigned int ar_loccookie
:1; /* use location based readdir
590 int ar_commit
; /* Commit interval */
591 int ar_statfs_quantum
; /* The fast statfs interval */
592 int ar_quota_quantum
; /* The quota interval */
593 int ar_statfs_percent
; /* The % change to force sync */
599 unsigned int gt_logd_secs
;
601 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
602 unsigned int gt_quota_scale_num
; /* Numerator */
603 unsigned int gt_quota_scale_den
; /* Denominator */
604 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
605 unsigned int gt_new_files_jdata
;
606 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
607 unsigned int gt_complain_secs
;
608 unsigned int gt_statfs_quantum
;
609 unsigned int gt_statfs_slow
;
613 SDF_JOURNAL_CHECKED
= 0,
614 SDF_JOURNAL_LIVE
= 1,
620 SDF_RORECOVERY
= 7, /* read only recovery */
621 SDF_SKIP_DLM_UNLOCK
= 8,
622 SDF_FORCE_AIL_FLUSH
= 9,
623 SDF_AIL1_IO_ERROR
= 10,
626 enum gfs2_freeze_state
{
628 SFS_STARTING_FREEZE
= 1,
632 #define GFS2_FSNAME_LEN 256
634 struct gfs2_inum_host
{
639 struct gfs2_sb_host
{
645 u32 sb_multihost_format
;
649 struct gfs2_inum_host sb_master_dir
;
650 struct gfs2_inum_host sb_root_dir
;
652 char sb_lockproto
[GFS2_LOCKNAME_LEN
];
653 char sb_locktable
[GFS2_LOCKNAME_LEN
];
657 * lm_mount() return values
659 * ls_jid - the journal ID this node should use
660 * ls_first - this node is the first to mount the file system
661 * ls_lockspace - lock module's context for this file system
662 * ls_ops - lock module's functions
665 struct lm_lockstruct
{
667 unsigned int ls_first
;
668 const struct lm_lockops
*ls_ops
;
669 dlm_lockspace_t
*ls_dlm
;
671 int ls_recover_jid_done
; /* These two are deprecated, */
672 int ls_recover_jid_status
; /* used previously by gfs_controld */
674 struct dlm_lksb ls_mounted_lksb
; /* mounted_lock */
675 struct dlm_lksb ls_control_lksb
; /* control_lock */
676 char ls_control_lvb
[GDLM_LVB_SIZE
]; /* control_lock lvb */
677 struct completion ls_sync_wait
; /* {control,mounted}_{lock,unlock} */
680 spinlock_t ls_recover_spin
; /* protects following fields */
681 unsigned long ls_recover_flags
; /* DFL_ */
682 uint32_t ls_recover_mount
; /* gen in first recover_done cb */
683 uint32_t ls_recover_start
; /* gen in last recover_done cb */
684 uint32_t ls_recover_block
; /* copy recover_start in last recover_prep */
685 uint32_t ls_recover_size
; /* size of recover_submit, recover_result */
686 uint32_t *ls_recover_submit
; /* gen in last recover_slot cb per jid */
687 uint32_t *ls_recover_result
; /* result of last jid recovery */
690 struct gfs2_pcpu_lkstats
{
691 /* One struct for each glock type */
692 struct gfs2_lkstats lkstats
[10];
696 struct super_block
*sd_vfs
;
697 struct gfs2_pcpu_lkstats __percpu
*sd_lkstats
;
698 struct kobject sd_kobj
;
699 unsigned long sd_flags
; /* SDF_... */
700 struct gfs2_sb_host sd_sb
;
702 /* Constants computed on mount */
706 u32 sd_diptrs
; /* Number of pointers in a dinode */
707 u32 sd_inptrs
; /* Number of pointers in a indirect block */
708 u32 sd_jbsize
; /* Size of a journaled data block */
709 u32 sd_hash_bsize
; /* sizeof(exhash block) */
710 u32 sd_hash_bsize_shift
;
711 u32 sd_hash_ptrs
; /* Number of pointers in a hash block */
713 u32 sd_blocks_per_bitmap
;
714 u32 sd_max_dirres
; /* Max blocks needed to add a directory entry */
715 u32 sd_max_height
; /* Max height of a file's metadata tree */
716 u64 sd_heightsize
[GFS2_MAX_META_HEIGHT
+ 1];
717 u32 sd_max_dents_per_leaf
; /* Max number of dirents in a leaf block */
719 struct gfs2_args sd_args
; /* Mount arguments */
720 struct gfs2_tune sd_tune
; /* Filesystem tuning structure */
724 struct lm_lockstruct sd_lockstruct
;
725 struct gfs2_holder sd_live_gh
;
726 struct gfs2_glock
*sd_rename_gl
;
727 struct gfs2_glock
*sd_freeze_gl
;
728 struct work_struct sd_freeze_work
;
729 wait_queue_head_t sd_glock_wait
;
730 atomic_t sd_glock_disposal
;
731 struct completion sd_locking_init
;
732 struct completion sd_wdack
;
733 struct delayed_work sd_control_work
;
737 struct dentry
*sd_master_dir
;
738 struct dentry
*sd_root_dir
;
740 struct inode
*sd_jindex
;
741 struct inode
*sd_statfs_inode
;
742 struct inode
*sd_sc_inode
;
743 struct inode
*sd_qc_inode
;
744 struct inode
*sd_rindex
;
745 struct inode
*sd_quota_inode
;
749 spinlock_t sd_statfs_spin
;
750 struct gfs2_statfs_change_host sd_statfs_master
;
751 struct gfs2_statfs_change_host sd_statfs_local
;
752 int sd_statfs_force_sync
;
754 /* Resource group stuff */
756 int sd_rindex_uptodate
;
757 spinlock_t sd_rindex_spin
;
758 struct rb_root sd_rindex_tree
;
759 unsigned int sd_rgrps
;
760 unsigned int sd_max_rg_data
;
762 /* Journal index stuff */
764 struct list_head sd_jindex_list
;
765 spinlock_t sd_jindex_spin
;
766 struct mutex sd_jindex_mutex
;
767 unsigned int sd_journals
;
769 struct gfs2_jdesc
*sd_jdesc
;
770 struct gfs2_holder sd_journal_gh
;
771 struct gfs2_holder sd_jinode_gh
;
773 struct gfs2_holder sd_sc_gh
;
774 struct gfs2_holder sd_qc_gh
;
776 struct completion sd_journal_ready
;
780 struct task_struct
*sd_logd_process
;
781 struct task_struct
*sd_quotad_process
;
785 struct list_head sd_quota_list
;
786 atomic_t sd_quota_count
;
787 struct mutex sd_quota_mutex
;
788 struct mutex sd_quota_sync_mutex
;
789 wait_queue_head_t sd_quota_wait
;
790 struct list_head sd_trunc_list
;
791 spinlock_t sd_trunc_lock
;
793 unsigned int sd_quota_slots
;
794 unsigned long *sd_quota_bitmap
;
795 spinlock_t sd_bitmap_lock
;
797 u64 sd_quota_sync_gen
;
801 struct address_space sd_aspace
;
803 spinlock_t sd_log_lock
;
805 struct gfs2_trans
*sd_log_tr
;
806 unsigned int sd_log_blks_reserved
;
807 int sd_log_commited_revoke
;
809 atomic_t sd_log_pinned
;
810 unsigned int sd_log_num_revoke
;
812 struct list_head sd_log_le_revoke
;
813 struct list_head sd_log_le_ordered
;
814 spinlock_t sd_ordered_lock
;
816 atomic_t sd_log_thresh1
;
817 atomic_t sd_log_thresh2
;
818 atomic_t sd_log_blks_free
;
819 atomic_t sd_log_blks_needed
;
820 wait_queue_head_t sd_log_waitq
;
821 wait_queue_head_t sd_logd_waitq
;
824 unsigned int sd_log_head
;
825 unsigned int sd_log_tail
;
828 struct rw_semaphore sd_log_flush_lock
;
829 atomic_t sd_log_in_flight
;
830 struct bio
*sd_log_bio
;
831 wait_queue_head_t sd_log_flush_wait
;
834 atomic_t sd_reserving_log
;
835 wait_queue_head_t sd_reserving_log_wait
;
837 unsigned int sd_log_flush_head
;
839 spinlock_t sd_ail_lock
;
840 struct list_head sd_ail1_list
;
841 struct list_head sd_ail2_list
;
843 /* For quiescing the filesystem */
844 struct gfs2_holder sd_freeze_gh
;
845 atomic_t sd_freeze_state
;
846 struct mutex sd_freeze_mutex
;
848 char sd_fsname
[GFS2_FSNAME_LEN
+ 3 * sizeof(int) + 2];
849 char sd_table_name
[GFS2_FSNAME_LEN
];
850 char sd_proto_name
[GFS2_FSNAME_LEN
];
854 unsigned long sd_last_warning
;
855 struct dentry
*debugfs_dir
; /* debugfs directory */
856 struct dentry
*debugfs_dentry_glocks
;
857 struct dentry
*debugfs_dentry_glstats
;
858 struct dentry
*debugfs_dentry_sbstats
;
861 static inline void gfs2_glstats_inc(struct gfs2_glock
*gl
, int which
)
863 gl
->gl_stats
.stats
[which
]++;
866 static inline void gfs2_sbstats_inc(const struct gfs2_glock
*gl
, int which
)
868 const struct gfs2_sbd
*sdp
= gl
->gl_name
.ln_sbd
;
870 this_cpu_ptr(sdp
->sd_lkstats
)->lkstats
[gl
->gl_name
.ln_type
].stats
[which
]++;
874 extern struct gfs2_rgrpd
*gfs2_glock2rgrp(struct gfs2_glock
*gl
);
876 static inline unsigned gfs2_max_stuffed_size(const struct gfs2_inode
*ip
)
878 return GFS2_SB(&ip
->i_inode
)->sd_sb
.sb_bsize
- sizeof(struct gfs2_dinode
);
881 #endif /* __INCORE_DOT_H__ */