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>
26 #define DIO_WAIT 0x00000010
27 #define DIO_METADATA 0x00000020
29 struct gfs2_log_operations
;
33 struct gfs2_quota_data
;
39 typedef void (*gfs2_glop_bh_t
) (struct gfs2_glock
*gl
, unsigned int ret
);
41 struct gfs2_log_header_host
{
42 u64 lh_sequence
; /* Sequence number of this transaction */
43 u32 lh_flags
; /* GFS2_LOG_HEAD_... */
44 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 struct buffer_head
*bi_bh
;
71 unsigned long bi_flags
;
79 struct rb_node rd_node
; /* Link with superblock */
80 struct gfs2_glock
*rd_gl
; /* Glock for this rgrp */
81 u64 rd_addr
; /* grp block disk address */
82 u64 rd_data0
; /* first data location */
83 u32 rd_length
; /* length of rgrp header in fs blocks */
84 u32 rd_data
; /* num of data blocks in rgrp */
85 u32 rd_bitbytes
; /* number of bytes in data bitmaps */
87 u32 rd_reserved
; /* number of blocks reserved */
91 struct gfs2_bitmap
*rd_bits
;
92 struct gfs2_sbd
*rd_sbd
;
93 struct gfs2_rgrp_lvb
*rd_rgl
;
96 u32 rd_extfail_pt
; /* extent failure point */
97 #define GFS2_RDF_CHECK 0x10000000 /* check for unlinked inodes */
98 #define GFS2_RDF_UPTODATE 0x20000000 /* rg is up to date */
99 #define GFS2_RDF_ERROR 0x40000000 /* error in rg */
100 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
101 spinlock_t rd_rsspin
; /* protects reservation related vars */
102 struct rb_root rd_rstree
; /* multi-block reservation tree */
106 struct gfs2_rgrpd
*rgd
;
107 u32 offset
; /* The offset is bitmap relative */
108 int bii
; /* Bitmap index */
111 static inline struct gfs2_bitmap
*rbm_bi(const struct gfs2_rbm
*rbm
)
113 return rbm
->rgd
->rd_bits
+ rbm
->bii
;
116 static inline u64
gfs2_rbm_to_block(const struct gfs2_rbm
*rbm
)
118 return rbm
->rgd
->rd_data0
+ (rbm_bi(rbm
)->bi_start
* GFS2_NBBY
) +
122 static inline bool gfs2_rbm_eq(const struct gfs2_rbm
*rbm1
,
123 const struct gfs2_rbm
*rbm2
)
125 return (rbm1
->rgd
== rbm2
->rgd
) && (rbm1
->bii
== rbm2
->bii
) &&
126 (rbm1
->offset
== rbm2
->offset
);
129 enum gfs2_state_bits
{
130 BH_Pinned
= BH_PrivateStart
,
131 BH_Escaped
= BH_PrivateStart
+ 1,
132 BH_Zeronew
= BH_PrivateStart
+ 2,
135 BUFFER_FNS(Pinned
, pinned
)
136 TAS_BUFFER_FNS(Pinned
, pinned
)
137 BUFFER_FNS(Escaped
, escaped
)
138 TAS_BUFFER_FNS(Escaped
, escaped
)
139 BUFFER_FNS(Zeronew
, zeronew
)
140 TAS_BUFFER_FNS(Zeronew
, zeronew
)
142 struct gfs2_bufdata
{
143 struct buffer_head
*bd_bh
;
144 struct gfs2_glock
*bd_gl
;
147 struct list_head bd_list
;
148 const struct gfs2_log_operations
*bd_ops
;
150 struct gfs2_trans
*bd_tr
;
151 struct list_head bd_ail_st_list
;
152 struct list_head bd_ail_gl_list
;
156 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
157 * prefix of lock_dlm_ gets awkward.
160 #define GDLM_STRNAME_BYTES 25
161 #define GDLM_LVB_SIZE 32
166 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
167 * held by failed nodes whose journals need recovery. Those locks should
168 * only be used for journal recovery until the journal recovery is done.
169 * This is set by the dlm recover_prep callback and cleared by the
170 * gfs2_control thread when journal recovery is complete. To avoid
171 * races between recover_prep setting and gfs2_control clearing, recover_spin
172 * is held while changing this bit and reading/writing recover_block
175 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
177 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
178 * recovery of all journals before allowing other nodes to mount the fs.
179 * This is cleared when FIRST_MOUNT_DONE is set.
181 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
182 * recovery of all journals, and now allows other nodes to mount the fs.
184 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
185 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
186 * control clearing BLOCK_LOCKS for further recoveries.
188 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
190 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
191 * and recover_done(), i.e. set while recover_block == recover_start.
198 DFL_FIRST_MOUNT_DONE
= 3,
201 DFL_DLM_RECOVERY
= 6,
206 unsigned int ln_type
;
209 #define lm_name_equal(name1, name2) \
210 (((name1)->ln_number == (name2)->ln_number) && \
211 ((name1)->ln_type == (name2)->ln_type))
214 struct gfs2_glock_operations
{
215 void (*go_sync
) (struct gfs2_glock
*gl
);
216 int (*go_xmote_bh
) (struct gfs2_glock
*gl
, struct gfs2_holder
*gh
);
217 void (*go_inval
) (struct gfs2_glock
*gl
, int flags
);
218 int (*go_demote_ok
) (const struct gfs2_glock
*gl
);
219 int (*go_lock
) (struct gfs2_holder
*gh
);
220 void (*go_unlock
) (struct gfs2_holder
*gh
);
221 void (*go_dump
)(struct seq_file
*seq
, const struct gfs2_glock
*gl
);
222 void (*go_callback
)(struct gfs2_glock
*gl
, bool remote
);
224 const unsigned long go_flags
;
225 #define GLOF_ASPACE 1
230 GFS2_LKS_SRTT
= 0, /* Non blocking smoothed round trip time */
231 GFS2_LKS_SRTTVAR
= 1, /* Non blocking smoothed variance */
232 GFS2_LKS_SRTTB
= 2, /* Blocking smoothed round trip time */
233 GFS2_LKS_SRTTVARB
= 3, /* Blocking smoothed variance */
234 GFS2_LKS_SIRT
= 4, /* Smoothed Inter-request time */
235 GFS2_LKS_SIRTVAR
= 5, /* Smoothed Inter-request variance */
236 GFS2_LKS_DCOUNT
= 6, /* Count of dlm requests */
237 GFS2_LKS_QCOUNT
= 7, /* Count of gfs2_holder queues */
241 struct gfs2_lkstats
{
242 s64 stats
[GFS2_NR_LKSTATS
];
247 HIF_HOLDER
= 6, /* Set for gh that "holds" the glock */
253 struct list_head gh_list
;
255 struct gfs2_glock
*gh_gl
;
256 struct pid
*gh_owner_pid
;
257 unsigned int gh_state
;
261 unsigned long gh_iflags
; /* HIF_... */
265 /* Number of quota types we support */
266 #define GFS2_MAXQUOTAS 2
268 /* Resource group multi-block reservation, in order of appearance:
270 Step 1. Function prepares to write, allocates a mb, sets the size hint.
271 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
272 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
273 Step 4. Bits are assigned from the rgrp based on either the reservation
277 struct gfs2_blkreserv
{
278 /* components used during write (step 1): */
279 atomic_t rs_sizehint
; /* hint of the write size */
281 struct gfs2_holder rs_rgd_gh
; /* Filled in by get_local_rgrp */
282 struct rb_node rs_node
; /* link to other block reservations */
283 struct gfs2_rbm rs_rbm
; /* Start of reservation */
284 u32 rs_free
; /* how many blocks are still free */
285 u64 rs_inum
; /* Inode number for reservation */
287 /* ancillary quota stuff */
288 struct gfs2_quota_data
*rs_qa_qd
[2 * GFS2_MAXQUOTAS
];
289 struct gfs2_holder rs_qa_qd_ghs
[2 * GFS2_MAXQUOTAS
];
290 unsigned int rs_qa_qd_num
;
294 * Allocation parameters
295 * @target: The number of blocks we'd ideally like to allocate
296 * @aflags: The flags (e.g. Orlov flag)
298 * The intent is to gradually expand this structure over time in
299 * order to give more information, e.g. alignment, min extent size
300 * to the allocation code.
302 struct gfs2_alloc_parms
{
310 GLF_PENDING_DEMOTE
= 4,
311 GLF_DEMOTE_IN_PROGRESS
= 5,
314 GLF_INVALIDATE_IN_PROGRESS
= 8,
315 GLF_REPLY_PENDING
= 9,
320 GLF_OBJECT
= 14, /* Used only for tracing */
325 struct hlist_bl_node gl_list
;
326 struct gfs2_sbd
*gl_sbd
;
327 unsigned long gl_flags
; /* GLF_... */
328 struct lm_lockname gl_name
;
330 struct lockref gl_lockref
;
331 #define gl_spin gl_lockref.lock
333 /* State fields protected by gl_spin */
334 unsigned int gl_state
:2, /* Current state */
335 gl_target
:2, /* Target state */
336 gl_demote_state
:2, /* State requested by remote node */
337 gl_req
:2, /* State in last dlm request */
338 gl_reply
:8; /* Last reply from the dlm */
340 unsigned int gl_hash
;
341 unsigned long gl_demote_time
; /* time of first demote request */
343 struct list_head gl_holders
;
345 const struct gfs2_glock_operations
*gl_ops
;
347 struct gfs2_lkstats gl_stats
;
348 struct dlm_lksb gl_lksb
;
349 unsigned long gl_tchange
;
352 struct list_head gl_lru
;
353 struct list_head gl_ail_list
;
354 atomic_t gl_ail_count
;
356 struct delayed_work gl_work
;
358 /* For inode and iopen glocks only */
359 struct work_struct gl_delete
;
360 /* For rgrp glocks only */
366 struct rcu_head gl_rcu
;
369 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
374 GIF_ALLOC_FAILED
= 2,
377 GIF_FREE_VFS_INODE
= 5,
381 struct inode i_inode
;
386 unsigned long i_flags
; /* GIF_... */
387 struct gfs2_glock
*i_gl
; /* Move into i_gh? */
388 struct gfs2_holder i_iopen_gh
;
389 struct gfs2_holder i_gh
; /* for prepare/commit_write only */
390 struct gfs2_blkreserv
*i_res
; /* rgrp multi-block reservation */
391 struct gfs2_rgrpd
*i_rgd
;
392 u64 i_goal
; /* goal block for allocations */
393 struct rw_semaphore i_rw_mutex
;
394 struct list_head i_ordered
;
395 struct list_head i_trunc_list
;
396 __be64
*i_hash_cache
;
404 * Since i_inode is the first element of struct gfs2_inode,
405 * this is effectively a cast.
407 static inline struct gfs2_inode
*GFS2_I(struct inode
*inode
)
409 return container_of(inode
, struct gfs2_inode
, i_inode
);
412 static inline struct gfs2_sbd
*GFS2_SB(const struct inode
*inode
)
414 return inode
->i_sb
->s_fs_info
;
418 struct mutex f_fl_mutex
;
419 struct gfs2_holder f_fl_gh
;
422 struct gfs2_revoke_replay
{
423 struct list_head rr_list
;
425 unsigned int rr_where
;
434 struct gfs2_quota_data
{
435 struct hlist_bl_node qd_hlist
;
436 struct list_head qd_list
;
438 struct gfs2_sbd
*qd_sbd
;
439 struct lockref qd_lockref
;
440 struct list_head qd_lru
;
443 unsigned long qd_flags
; /* QDF_... */
448 unsigned int qd_slot
;
449 unsigned int qd_slot_count
;
451 struct buffer_head
*qd_bh
;
452 struct gfs2_quota_change
*qd_bh_qc
;
453 unsigned int qd_bh_count
;
455 struct gfs2_glock
*qd_gl
;
456 struct gfs2_quota_lvb qd_qb
;
459 unsigned long qd_last_warn
;
460 struct rcu_head qd_rcu
;
466 unsigned int tr_blocks
;
467 unsigned int tr_revokes
;
468 unsigned int tr_reserved
;
469 unsigned int tr_touched
:1;
470 unsigned int tr_attached
:1;
471 unsigned int tr_alloced
:1;
473 unsigned int tr_num_buf_new
;
474 unsigned int tr_num_databuf_new
;
475 unsigned int tr_num_buf_rm
;
476 unsigned int tr_num_databuf_rm
;
477 unsigned int tr_num_revoke
;
478 unsigned int tr_num_revoke_rm
;
480 struct list_head tr_list
;
481 struct list_head tr_databuf
;
482 struct list_head tr_buf
;
484 unsigned int tr_first
;
485 struct list_head tr_ail1_list
;
486 struct list_head tr_ail2_list
;
489 struct gfs2_journal_extent
{
490 struct list_head list
;
492 unsigned int lblock
; /* First logical block */
493 u64 dblock
; /* First disk block */
498 struct list_head jd_list
;
499 struct list_head extent_list
;
500 unsigned int nr_extents
;
501 struct work_struct jd_work
;
502 struct inode
*jd_inode
;
503 unsigned long jd_flags
;
504 #define JDF_RECOVERY 1
506 unsigned int jd_blocks
;
507 int jd_recover_error
;
510 unsigned int jd_found_blocks
;
511 unsigned int jd_found_revokes
;
512 unsigned int jd_replayed_blocks
;
514 struct list_head jd_revoke_list
;
515 unsigned int jd_replay_tail
;
519 struct gfs2_statfs_change_host
{
525 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
526 #define GFS2_QUOTA_OFF 0
527 #define GFS2_QUOTA_ACCOUNT 1
528 #define GFS2_QUOTA_ON 2
530 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
531 #define GFS2_DATA_WRITEBACK 1
532 #define GFS2_DATA_ORDERED 2
534 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
535 #define GFS2_ERRORS_WITHDRAW 0
536 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
537 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
538 #define GFS2_ERRORS_PANIC 3
541 char ar_lockproto
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Protocol */
542 char ar_locktable
[GFS2_LOCKNAME_LEN
]; /* Name of the Lock Table */
543 char ar_hostdata
[GFS2_LOCKNAME_LEN
]; /* Host specific data */
544 unsigned int ar_spectator
:1; /* Don't get a journal */
545 unsigned int ar_localflocks
:1; /* Let the VFS do flock|fcntl */
546 unsigned int ar_debug
:1; /* Oops on errors */
547 unsigned int ar_posix_acl
:1; /* Enable posix acls */
548 unsigned int ar_quota
:2; /* off/account/on */
549 unsigned int ar_suiddir
:1; /* suiddir support */
550 unsigned int ar_data
:2; /* ordered/writeback */
551 unsigned int ar_meta
:1; /* mount metafs */
552 unsigned int ar_discard
:1; /* discard requests */
553 unsigned int ar_errors
:2; /* errors=withdraw | panic */
554 unsigned int ar_nobarrier
:1; /* do not send barriers */
555 unsigned int ar_rgrplvb
:1; /* use lvbs for rgrp info */
556 int ar_commit
; /* Commit interval */
557 int ar_statfs_quantum
; /* The fast statfs interval */
558 int ar_quota_quantum
; /* The quota interval */
559 int ar_statfs_percent
; /* The % change to force sync */
565 unsigned int gt_logd_secs
;
567 unsigned int gt_quota_warn_period
; /* Secs between quota warn msgs */
568 unsigned int gt_quota_scale_num
; /* Numerator */
569 unsigned int gt_quota_scale_den
; /* Denominator */
570 unsigned int gt_quota_quantum
; /* Secs between syncs to quota file */
571 unsigned int gt_new_files_jdata
;
572 unsigned int gt_max_readahead
; /* Max bytes to read-ahead from disk */
573 unsigned int gt_complain_secs
;
574 unsigned int gt_statfs_quantum
;
575 unsigned int gt_statfs_slow
;
579 SDF_JOURNAL_CHECKED
= 0,
580 SDF_JOURNAL_LIVE
= 1,
586 SDF_RORECOVERY
= 7, /* read only recovery */
587 SDF_SKIP_DLM_UNLOCK
= 8,
590 #define GFS2_FSNAME_LEN 256
592 struct gfs2_inum_host
{
597 struct gfs2_sb_host
{
603 u32 sb_multihost_format
;
607 struct gfs2_inum_host sb_master_dir
;
608 struct gfs2_inum_host sb_root_dir
;
610 char sb_lockproto
[GFS2_LOCKNAME_LEN
];
611 char sb_locktable
[GFS2_LOCKNAME_LEN
];
615 * lm_mount() return values
617 * ls_jid - the journal ID this node should use
618 * ls_first - this node is the first to mount the file system
619 * ls_lockspace - lock module's context for this file system
620 * ls_ops - lock module's functions
623 struct lm_lockstruct
{
625 unsigned int ls_first
;
626 const struct lm_lockops
*ls_ops
;
627 dlm_lockspace_t
*ls_dlm
;
629 int ls_recover_jid_done
; /* These two are deprecated, */
630 int ls_recover_jid_status
; /* used previously by gfs_controld */
632 struct dlm_lksb ls_mounted_lksb
; /* mounted_lock */
633 struct dlm_lksb ls_control_lksb
; /* control_lock */
634 char ls_control_lvb
[GDLM_LVB_SIZE
]; /* control_lock lvb */
635 struct completion ls_sync_wait
; /* {control,mounted}_{lock,unlock} */
638 spinlock_t ls_recover_spin
; /* protects following fields */
639 unsigned long ls_recover_flags
; /* DFL_ */
640 uint32_t ls_recover_mount
; /* gen in first recover_done cb */
641 uint32_t ls_recover_start
; /* gen in last recover_done cb */
642 uint32_t ls_recover_block
; /* copy recover_start in last recover_prep */
643 uint32_t ls_recover_size
; /* size of recover_submit, recover_result */
644 uint32_t *ls_recover_submit
; /* gen in last recover_slot cb per jid */
645 uint32_t *ls_recover_result
; /* result of last jid recovery */
648 struct gfs2_pcpu_lkstats
{
649 /* One struct for each glock type */
650 struct gfs2_lkstats lkstats
[10];
654 struct super_block
*sd_vfs
;
655 struct gfs2_pcpu_lkstats __percpu
*sd_lkstats
;
656 struct kobject sd_kobj
;
657 unsigned long sd_flags
; /* SDF_... */
658 struct gfs2_sb_host sd_sb
;
660 /* Constants computed on mount */
664 u32 sd_diptrs
; /* Number of pointers in a dinode */
665 u32 sd_inptrs
; /* Number of pointers in a indirect block */
666 u32 sd_jbsize
; /* Size of a journaled data block */
667 u32 sd_hash_bsize
; /* sizeof(exhash block) */
668 u32 sd_hash_bsize_shift
;
669 u32 sd_hash_ptrs
; /* Number of pointers in a hash block */
671 u32 sd_blocks_per_bitmap
;
672 u32 sd_max_dirres
; /* Max blocks needed to add a directory entry */
673 u32 sd_max_height
; /* Max height of a file's metadata tree */
674 u64 sd_heightsize
[GFS2_MAX_META_HEIGHT
+ 1];
675 u32 sd_max_jheight
; /* Max height of journaled file's meta tree */
676 u64 sd_jheightsize
[GFS2_MAX_META_HEIGHT
+ 1];
678 struct gfs2_args sd_args
; /* Mount arguments */
679 struct gfs2_tune sd_tune
; /* Filesystem tuning structure */
683 struct lm_lockstruct sd_lockstruct
;
684 struct gfs2_holder sd_live_gh
;
685 struct gfs2_glock
*sd_rename_gl
;
686 struct gfs2_glock
*sd_freeze_gl
;
687 wait_queue_head_t sd_glock_wait
;
688 atomic_t sd_glock_disposal
;
689 struct completion sd_locking_init
;
690 struct completion sd_wdack
;
691 struct delayed_work sd_control_work
;
695 struct dentry
*sd_master_dir
;
696 struct dentry
*sd_root_dir
;
698 struct inode
*sd_jindex
;
699 struct inode
*sd_statfs_inode
;
700 struct inode
*sd_sc_inode
;
701 struct inode
*sd_qc_inode
;
702 struct inode
*sd_rindex
;
703 struct inode
*sd_quota_inode
;
707 spinlock_t sd_statfs_spin
;
708 struct gfs2_statfs_change_host sd_statfs_master
;
709 struct gfs2_statfs_change_host sd_statfs_local
;
710 int sd_statfs_force_sync
;
712 /* Resource group stuff */
714 int sd_rindex_uptodate
;
715 spinlock_t sd_rindex_spin
;
716 struct rb_root sd_rindex_tree
;
717 unsigned int sd_rgrps
;
718 unsigned int sd_max_rg_data
;
720 /* Journal index stuff */
722 struct list_head sd_jindex_list
;
723 spinlock_t sd_jindex_spin
;
724 struct mutex sd_jindex_mutex
;
725 unsigned int sd_journals
;
727 struct gfs2_jdesc
*sd_jdesc
;
728 struct gfs2_holder sd_journal_gh
;
729 struct gfs2_holder sd_jinode_gh
;
731 struct gfs2_holder sd_sc_gh
;
732 struct gfs2_holder sd_qc_gh
;
734 struct completion sd_journal_ready
;
738 struct task_struct
*sd_logd_process
;
739 struct task_struct
*sd_quotad_process
;
743 struct list_head sd_quota_list
;
744 atomic_t sd_quota_count
;
745 struct mutex sd_quota_mutex
;
746 struct mutex sd_quota_sync_mutex
;
747 wait_queue_head_t sd_quota_wait
;
748 struct list_head sd_trunc_list
;
749 spinlock_t sd_trunc_lock
;
751 unsigned int sd_quota_slots
;
752 unsigned long *sd_quota_bitmap
;
753 spinlock_t sd_bitmap_lock
;
755 u64 sd_quota_sync_gen
;
759 struct address_space sd_aspace
;
761 spinlock_t sd_log_lock
;
763 struct gfs2_trans
*sd_log_tr
;
764 unsigned int sd_log_blks_reserved
;
765 int sd_log_commited_revoke
;
767 atomic_t sd_log_pinned
;
768 unsigned int sd_log_num_revoke
;
770 struct list_head sd_log_le_revoke
;
771 struct list_head sd_log_le_ordered
;
772 spinlock_t sd_ordered_lock
;
774 atomic_t sd_log_thresh1
;
775 atomic_t sd_log_thresh2
;
776 atomic_t sd_log_blks_free
;
777 wait_queue_head_t sd_log_waitq
;
778 wait_queue_head_t sd_logd_waitq
;
781 unsigned int sd_log_head
;
782 unsigned int sd_log_tail
;
785 struct rw_semaphore sd_log_flush_lock
;
786 atomic_t sd_log_in_flight
;
787 struct bio
*sd_log_bio
;
788 wait_queue_head_t sd_log_flush_wait
;
791 unsigned int sd_log_flush_head
;
792 u64 sd_log_flush_wrapped
;
794 spinlock_t sd_ail_lock
;
795 struct list_head sd_ail1_list
;
796 struct list_head sd_ail2_list
;
798 /* For quiescing the filesystem */
799 struct gfs2_holder sd_freeze_gh
;
800 struct gfs2_holder sd_freeze_root_gh
;
801 struct gfs2_holder sd_thaw_gh
;
802 atomic_t sd_log_freeze
;
803 atomic_t sd_frozen_root
;
804 wait_queue_head_t sd_frozen_root_wait
;
805 wait_queue_head_t sd_log_frozen_wait
;
807 char sd_fsname
[GFS2_FSNAME_LEN
];
808 char sd_table_name
[GFS2_FSNAME_LEN
];
809 char sd_proto_name
[GFS2_FSNAME_LEN
];
813 unsigned long sd_last_warning
;
814 struct dentry
*debugfs_dir
; /* debugfs directory */
815 struct dentry
*debugfs_dentry_glocks
;
816 struct dentry
*debugfs_dentry_glstats
;
817 struct dentry
*debugfs_dentry_sbstats
;
820 static inline void gfs2_glstats_inc(struct gfs2_glock
*gl
, int which
)
822 gl
->gl_stats
.stats
[which
]++;
825 static inline void gfs2_sbstats_inc(const struct gfs2_glock
*gl
, int which
)
827 const struct gfs2_sbd
*sdp
= gl
->gl_sbd
;
829 this_cpu_ptr(sdp
->sd_lkstats
)->lkstats
[gl
->gl_name
.ln_type
].stats
[which
]++;
833 #endif /* __INCORE_DOT_H__ */