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_PREFERRED 0x80000000 /* This rgrp is preferred */
101 #define GFS2_RDF_MASK 0xf0000000 /* mask for internal flags */
102 spinlock_t rd_rsspin; /* protects reservation related vars */
103 struct rb_root rd_rstree; /* multi-block reservation tree */
107 struct gfs2_rgrpd *rgd;
108 u32 offset; /* The offset is bitmap relative */
109 int bii; /* Bitmap index */
112 static inline struct gfs2_bitmap *rbm_bi(const struct gfs2_rbm *rbm)
114 return rbm->rgd->rd_bits + rbm->bii;
117 static inline u64 gfs2_rbm_to_block(const struct gfs2_rbm *rbm)
119 return rbm->rgd->rd_data0 + (rbm_bi(rbm)->bi_start * GFS2_NBBY) +
123 static inline bool gfs2_rbm_eq(const struct gfs2_rbm *rbm1,
124 const struct gfs2_rbm *rbm2)
126 return (rbm1->rgd == rbm2->rgd) && (rbm1->bii == rbm2->bii) &&
127 (rbm1->offset == rbm2->offset);
130 enum gfs2_state_bits {
131 BH_Pinned = BH_PrivateStart,
132 BH_Escaped = BH_PrivateStart + 1,
133 BH_Zeronew = BH_PrivateStart + 2,
136 BUFFER_FNS(Pinned, pinned)
137 TAS_BUFFER_FNS(Pinned, pinned)
138 BUFFER_FNS(Escaped, escaped)
139 TAS_BUFFER_FNS(Escaped, escaped)
140 BUFFER_FNS(Zeronew, zeronew)
141 TAS_BUFFER_FNS(Zeronew, zeronew)
143 struct gfs2_bufdata {
144 struct buffer_head *bd_bh;
145 struct gfs2_glock *bd_gl;
148 struct list_head bd_list;
149 const struct gfs2_log_operations *bd_ops;
151 struct gfs2_trans *bd_tr;
152 struct list_head bd_ail_st_list;
153 struct list_head bd_ail_gl_list;
157 * Internally, we prefix things with gdlm_ and GDLM_ (for gfs-dlm) since a
158 * prefix of lock_dlm_ gets awkward.
161 #define GDLM_STRNAME_BYTES 25
162 #define GDLM_LVB_SIZE 32
167 * DFL_BLOCK_LOCKS: dlm is in recovery and will grant locks that had been
168 * held by failed nodes whose journals need recovery. Those locks should
169 * only be used for journal recovery until the journal recovery is done.
170 * This is set by the dlm recover_prep callback and cleared by the
171 * gfs2_control thread when journal recovery is complete. To avoid
172 * races between recover_prep setting and gfs2_control clearing, recover_spin
173 * is held while changing this bit and reading/writing recover_block
176 * DFL_NO_DLM_OPS: dlm lockspace ops/callbacks are not being used.
178 * DFL_FIRST_MOUNT: this node is the first to mount this fs and is doing
179 * recovery of all journals before allowing other nodes to mount the fs.
180 * This is cleared when FIRST_MOUNT_DONE is set.
182 * DFL_FIRST_MOUNT_DONE: this node was the first mounter, and has finished
183 * recovery of all journals, and now allows other nodes to mount the fs.
185 * DFL_MOUNT_DONE: gdlm_mount has completed successfully and cleared
186 * BLOCK_LOCKS for the first time. The gfs2_control thread should now
187 * control clearing BLOCK_LOCKS for further recoveries.
189 * DFL_UNMOUNT: gdlm_unmount sets to keep sdp off gfs2_control_wq.
191 * DFL_DLM_RECOVERY: set while dlm is in recovery, between recover_prep()
192 * and recover_done(), i.e. set while recover_block == recover_start.
199 DFL_FIRST_MOUNT_DONE = 3,
202 DFL_DLM_RECOVERY = 6,
207 unsigned int ln_type;
210 #define lm_name_equal(name1, name2) \
211 (((name1)->ln_number == (name2)->ln_number) && \
212 ((name1)->ln_type == (name2)->ln_type))
215 struct gfs2_glock_operations {
216 void (*go_sync) (struct gfs2_glock *gl);
217 int (*go_xmote_bh) (struct gfs2_glock *gl, struct gfs2_holder *gh);
218 void (*go_inval) (struct gfs2_glock *gl, int flags);
219 int (*go_demote_ok) (const struct gfs2_glock *gl);
220 int (*go_lock) (struct gfs2_holder *gh);
221 void (*go_unlock) (struct gfs2_holder *gh);
222 void (*go_dump)(struct seq_file *seq, const struct gfs2_glock *gl);
223 void (*go_callback)(struct gfs2_glock *gl, bool remote);
225 const unsigned long go_flags;
226 #define GLOF_ASPACE 1
231 GFS2_LKS_SRTT = 0, /* Non blocking smoothed round trip time */
232 GFS2_LKS_SRTTVAR = 1, /* Non blocking smoothed variance */
233 GFS2_LKS_SRTTB = 2, /* Blocking smoothed round trip time */
234 GFS2_LKS_SRTTVARB = 3, /* Blocking smoothed variance */
235 GFS2_LKS_SIRT = 4, /* Smoothed Inter-request time */
236 GFS2_LKS_SIRTVAR = 5, /* Smoothed Inter-request variance */
237 GFS2_LKS_DCOUNT = 6, /* Count of dlm requests */
238 GFS2_LKS_QCOUNT = 7, /* Count of gfs2_holder queues */
242 struct gfs2_lkstats {
243 s64 stats[GFS2_NR_LKSTATS];
248 HIF_HOLDER = 6, /* Set for gh that "holds" the glock */
254 struct list_head gh_list;
256 struct gfs2_glock *gh_gl;
257 struct pid *gh_owner_pid;
258 unsigned int gh_state;
262 unsigned long gh_iflags; /* HIF_... */
266 /* Number of quota types we support */
267 #define GFS2_MAXQUOTAS 2
269 /* Resource group multi-block reservation, in order of appearance:
271 Step 1. Function prepares to write, allocates a mb, sets the size hint.
272 Step 2. User calls inplace_reserve to target an rgrp, sets the rgrp info
273 Step 3. Function get_local_rgrp locks the rgrp, determines which bits to use
274 Step 4. Bits are assigned from the rgrp based on either the reservation
278 struct gfs2_blkreserv {
279 /* components used during write (step 1): */
280 atomic_t rs_sizehint; /* hint of the write size */
282 struct gfs2_holder rs_rgd_gh; /* Filled in by get_local_rgrp */
283 struct rb_node rs_node; /* link to other block reservations */
284 struct gfs2_rbm rs_rbm; /* Start of reservation */
285 u32 rs_free; /* how many blocks are still free */
286 u64 rs_inum; /* Inode number for reservation */
288 /* ancillary quota stuff */
289 struct gfs2_quota_data *rs_qa_qd[2 * GFS2_MAXQUOTAS];
290 struct gfs2_holder rs_qa_qd_ghs[2 * GFS2_MAXQUOTAS];
291 unsigned int rs_qa_qd_num;
295 * Allocation parameters
296 * @target: The number of blocks we'd ideally like to allocate
297 * @aflags: The flags (e.g. Orlov flag)
299 * The intent is to gradually expand this structure over time in
300 * order to give more information, e.g. alignment, min extent size
301 * to the allocation code.
303 struct gfs2_alloc_parms {
313 GLF_PENDING_DEMOTE = 4,
314 GLF_DEMOTE_IN_PROGRESS = 5,
317 GLF_INVALIDATE_IN_PROGRESS = 8,
318 GLF_REPLY_PENDING = 9,
323 GLF_OBJECT = 14, /* Used only for tracing */
328 struct hlist_bl_node gl_list;
329 struct gfs2_sbd *gl_sbd;
330 unsigned long gl_flags; /* GLF_... */
331 struct lm_lockname gl_name;
333 struct lockref gl_lockref;
334 #define gl_spin gl_lockref.lock
336 /* State fields protected by gl_spin */
337 unsigned int gl_state:2, /* Current state */
338 gl_target:2, /* Target state */
339 gl_demote_state:2, /* State requested by remote node */
340 gl_req:2, /* State in last dlm request */
341 gl_reply:8; /* Last reply from the dlm */
343 unsigned int gl_hash;
344 unsigned long gl_demote_time; /* time of first demote request */
346 struct list_head gl_holders;
348 const struct gfs2_glock_operations *gl_ops;
350 struct gfs2_lkstats gl_stats;
351 struct dlm_lksb gl_lksb;
352 unsigned long gl_tchange;
355 struct list_head gl_lru;
356 struct list_head gl_ail_list;
357 atomic_t gl_ail_count;
359 struct delayed_work gl_work;
361 /* For inode and iopen glocks only */
362 struct work_struct gl_delete;
363 /* For rgrp glocks only */
369 struct rcu_head gl_rcu;
372 #define GFS2_MIN_LVB_SIZE 32 /* Min size of LVB that gfs2 supports */
377 GIF_ALLOC_FAILED = 2,
380 GIF_FREE_VFS_INODE = 5,
384 struct inode i_inode;
389 unsigned long i_flags; /* GIF_... */
390 struct gfs2_glock *i_gl; /* Move into i_gh? */
391 struct gfs2_holder i_iopen_gh;
392 struct gfs2_holder i_gh; /* for prepare/commit_write only */
393 struct gfs2_blkreserv *i_res; /* rgrp multi-block reservation */
394 struct gfs2_rgrpd *i_rgd;
395 u64 i_goal; /* goal block for allocations */
396 struct rw_semaphore i_rw_mutex;
397 struct list_head i_ordered;
398 struct list_head i_trunc_list;
399 __be64 *i_hash_cache;
407 * Since i_inode is the first element of struct gfs2_inode,
408 * this is effectively a cast.
410 static inline struct gfs2_inode *GFS2_I(struct inode *inode)
412 return container_of(inode, struct gfs2_inode, i_inode);
415 static inline struct gfs2_sbd *GFS2_SB(const struct inode *inode)
417 return inode->i_sb->s_fs_info;
421 struct mutex f_fl_mutex;
422 struct gfs2_holder f_fl_gh;
425 struct gfs2_revoke_replay {
426 struct list_head rr_list;
428 unsigned int rr_where;
437 struct gfs2_quota_data {
438 struct hlist_bl_node qd_hlist;
439 struct list_head qd_list;
441 struct gfs2_sbd *qd_sbd;
442 struct lockref qd_lockref;
443 struct list_head qd_lru;
446 unsigned long qd_flags; /* QDF_... */
451 unsigned int qd_slot;
452 unsigned int qd_slot_count;
454 struct buffer_head *qd_bh;
455 struct gfs2_quota_change *qd_bh_qc;
456 unsigned int qd_bh_count;
458 struct gfs2_glock *qd_gl;
459 struct gfs2_quota_lvb qd_qb;
462 unsigned long qd_last_warn;
463 struct rcu_head qd_rcu;
469 unsigned int tr_blocks;
470 unsigned int tr_revokes;
471 unsigned int tr_reserved;
472 unsigned int tr_touched:1;
473 unsigned int tr_attached:1;
474 unsigned int tr_alloced:1;
476 unsigned int tr_num_buf_new;
477 unsigned int tr_num_databuf_new;
478 unsigned int tr_num_buf_rm;
479 unsigned int tr_num_databuf_rm;
480 unsigned int tr_num_revoke;
481 unsigned int tr_num_revoke_rm;
483 struct list_head tr_list;
484 struct list_head tr_databuf;
485 struct list_head tr_buf;
487 unsigned int tr_first;
488 struct list_head tr_ail1_list;
489 struct list_head tr_ail2_list;
492 struct gfs2_journal_extent {
493 struct list_head list;
495 unsigned int lblock; /* First logical block */
496 u64 dblock; /* First disk block */
501 struct list_head jd_list;
502 struct list_head extent_list;
503 unsigned int nr_extents;
504 struct work_struct jd_work;
505 struct inode *jd_inode;
506 unsigned long jd_flags;
507 #define JDF_RECOVERY 1
509 unsigned int jd_blocks;
510 int jd_recover_error;
513 unsigned int jd_found_blocks;
514 unsigned int jd_found_revokes;
515 unsigned int jd_replayed_blocks;
517 struct list_head jd_revoke_list;
518 unsigned int jd_replay_tail;
522 struct gfs2_statfs_change_host {
528 #define GFS2_QUOTA_DEFAULT GFS2_QUOTA_OFF
529 #define GFS2_QUOTA_OFF 0
530 #define GFS2_QUOTA_ACCOUNT 1
531 #define GFS2_QUOTA_ON 2
533 #define GFS2_DATA_DEFAULT GFS2_DATA_ORDERED
534 #define GFS2_DATA_WRITEBACK 1
535 #define GFS2_DATA_ORDERED 2
537 #define GFS2_ERRORS_DEFAULT GFS2_ERRORS_WITHDRAW
538 #define GFS2_ERRORS_WITHDRAW 0
539 #define GFS2_ERRORS_CONTINUE 1 /* place holder for future feature */
540 #define GFS2_ERRORS_RO 2 /* place holder for future feature */
541 #define GFS2_ERRORS_PANIC 3
544 char ar_lockproto[GFS2_LOCKNAME_LEN]; /* Name of the Lock Protocol */
545 char ar_locktable[GFS2_LOCKNAME_LEN]; /* Name of the Lock Table */
546 char ar_hostdata[GFS2_LOCKNAME_LEN]; /* Host specific data */
547 unsigned int ar_spectator:1; /* Don't get a journal */
548 unsigned int ar_localflocks:1; /* Let the VFS do flock|fcntl */
549 unsigned int ar_debug:1; /* Oops on errors */
550 unsigned int ar_posix_acl:1; /* Enable posix acls */
551 unsigned int ar_quota:2; /* off/account/on */
552 unsigned int ar_suiddir:1; /* suiddir support */
553 unsigned int ar_data:2; /* ordered/writeback */
554 unsigned int ar_meta:1; /* mount metafs */
555 unsigned int ar_discard:1; /* discard requests */
556 unsigned int ar_errors:2; /* errors=withdraw | panic */
557 unsigned int ar_nobarrier:1; /* do not send barriers */
558 unsigned int ar_rgrplvb:1; /* use lvbs for rgrp info */
559 int ar_commit; /* Commit interval */
560 int ar_statfs_quantum; /* The fast statfs interval */
561 int ar_quota_quantum; /* The quota interval */
562 int ar_statfs_percent; /* The % change to force sync */
568 unsigned int gt_logd_secs;
570 unsigned int gt_quota_warn_period; /* Secs between quota warn msgs */
571 unsigned int gt_quota_scale_num; /* Numerator */
572 unsigned int gt_quota_scale_den; /* Denominator */
573 unsigned int gt_quota_quantum; /* Secs between syncs to quota file */
574 unsigned int gt_new_files_jdata;
575 unsigned int gt_max_readahead; /* Max bytes to read-ahead from disk */
576 unsigned int gt_complain_secs;
577 unsigned int gt_statfs_quantum;
578 unsigned int gt_statfs_slow;
582 SDF_JOURNAL_CHECKED = 0,
583 SDF_JOURNAL_LIVE = 1,
589 SDF_RORECOVERY = 7, /* read only recovery */
590 SDF_SKIP_DLM_UNLOCK = 8,
593 enum gfs2_freeze_state {
595 SFS_STARTING_FREEZE = 1,
599 #define GFS2_FSNAME_LEN 256
601 struct gfs2_inum_host {
606 struct gfs2_sb_host {
612 u32 sb_multihost_format;
616 struct gfs2_inum_host sb_master_dir;
617 struct gfs2_inum_host sb_root_dir;
619 char sb_lockproto[GFS2_LOCKNAME_LEN];
620 char sb_locktable[GFS2_LOCKNAME_LEN];
624 * lm_mount() return values
626 * ls_jid - the journal ID this node should use
627 * ls_first - this node is the first to mount the file system
628 * ls_lockspace - lock module's context for this file system
629 * ls_ops - lock module's functions
632 struct lm_lockstruct {
634 unsigned int ls_first;
635 const struct lm_lockops *ls_ops;
636 dlm_lockspace_t *ls_dlm;
638 int ls_recover_jid_done; /* These two are deprecated, */
639 int ls_recover_jid_status; /* used previously by gfs_controld */
641 struct dlm_lksb ls_mounted_lksb; /* mounted_lock */
642 struct dlm_lksb ls_control_lksb; /* control_lock */
643 char ls_control_lvb[GDLM_LVB_SIZE]; /* control_lock lvb */
644 struct completion ls_sync_wait; /* {control,mounted}_{lock,unlock} */
647 spinlock_t ls_recover_spin; /* protects following fields */
648 unsigned long ls_recover_flags; /* DFL_ */
649 uint32_t ls_recover_mount; /* gen in first recover_done cb */
650 uint32_t ls_recover_start; /* gen in last recover_done cb */
651 uint32_t ls_recover_block; /* copy recover_start in last recover_prep */
652 uint32_t ls_recover_size; /* size of recover_submit, recover_result */
653 uint32_t *ls_recover_submit; /* gen in last recover_slot cb per jid */
654 uint32_t *ls_recover_result; /* result of last jid recovery */
657 struct gfs2_pcpu_lkstats {
658 /* One struct for each glock type */
659 struct gfs2_lkstats lkstats[10];
663 struct super_block *sd_vfs;
664 struct gfs2_pcpu_lkstats __percpu *sd_lkstats;
665 struct kobject sd_kobj;
666 unsigned long sd_flags; /* SDF_... */
667 struct gfs2_sb_host sd_sb;
669 /* Constants computed on mount */
673 u32 sd_diptrs; /* Number of pointers in a dinode */
674 u32 sd_inptrs; /* Number of pointers in a indirect block */
675 u32 sd_jbsize; /* Size of a journaled data block */
676 u32 sd_hash_bsize; /* sizeof(exhash block) */
677 u32 sd_hash_bsize_shift;
678 u32 sd_hash_ptrs; /* Number of pointers in a hash block */
680 u32 sd_blocks_per_bitmap;
681 u32 sd_max_dirres; /* Max blocks needed to add a directory entry */
682 u32 sd_max_height; /* Max height of a file's metadata tree */
683 u64 sd_heightsize[GFS2_MAX_META_HEIGHT + 1];
684 u32 sd_max_jheight; /* Max height of journaled file's meta tree */
685 u64 sd_jheightsize[GFS2_MAX_META_HEIGHT + 1];
687 struct gfs2_args sd_args; /* Mount arguments */
688 struct gfs2_tune sd_tune; /* Filesystem tuning structure */
692 struct lm_lockstruct sd_lockstruct;
693 struct gfs2_holder sd_live_gh;
694 struct gfs2_glock *sd_rename_gl;
695 struct gfs2_glock *sd_freeze_gl;
696 struct work_struct sd_freeze_work;
697 wait_queue_head_t sd_glock_wait;
698 atomic_t sd_glock_disposal;
699 struct completion sd_locking_init;
700 struct completion sd_wdack;
701 struct delayed_work sd_control_work;
705 struct dentry *sd_master_dir;
706 struct dentry *sd_root_dir;
708 struct inode *sd_jindex;
709 struct inode *sd_statfs_inode;
710 struct inode *sd_sc_inode;
711 struct inode *sd_qc_inode;
712 struct inode *sd_rindex;
713 struct inode *sd_quota_inode;
717 spinlock_t sd_statfs_spin;
718 struct gfs2_statfs_change_host sd_statfs_master;
719 struct gfs2_statfs_change_host sd_statfs_local;
720 int sd_statfs_force_sync;
722 /* Resource group stuff */
724 int sd_rindex_uptodate;
725 spinlock_t sd_rindex_spin;
726 struct rb_root sd_rindex_tree;
727 unsigned int sd_rgrps;
728 unsigned int sd_max_rg_data;
730 /* Journal index stuff */
732 struct list_head sd_jindex_list;
733 spinlock_t sd_jindex_spin;
734 struct mutex sd_jindex_mutex;
735 unsigned int sd_journals;
737 struct gfs2_jdesc *sd_jdesc;
738 struct gfs2_holder sd_journal_gh;
739 struct gfs2_holder sd_jinode_gh;
741 struct gfs2_holder sd_sc_gh;
742 struct gfs2_holder sd_qc_gh;
744 struct completion sd_journal_ready;
748 struct task_struct *sd_logd_process;
749 struct task_struct *sd_quotad_process;
753 struct list_head sd_quota_list;
754 atomic_t sd_quota_count;
755 struct mutex sd_quota_mutex;
756 struct mutex sd_quota_sync_mutex;
757 wait_queue_head_t sd_quota_wait;
758 struct list_head sd_trunc_list;
759 spinlock_t sd_trunc_lock;
761 unsigned int sd_quota_slots;
762 unsigned long *sd_quota_bitmap;
763 spinlock_t sd_bitmap_lock;
765 u64 sd_quota_sync_gen;
769 struct address_space sd_aspace;
771 spinlock_t sd_log_lock;
773 struct gfs2_trans *sd_log_tr;
774 unsigned int sd_log_blks_reserved;
775 int sd_log_commited_revoke;
777 atomic_t sd_log_pinned;
778 unsigned int sd_log_num_revoke;
780 struct list_head sd_log_le_revoke;
781 struct list_head sd_log_le_ordered;
782 spinlock_t sd_ordered_lock;
784 atomic_t sd_log_thresh1;
785 atomic_t sd_log_thresh2;
786 atomic_t sd_log_blks_free;
787 wait_queue_head_t sd_log_waitq;
788 wait_queue_head_t sd_logd_waitq;
791 unsigned int sd_log_head;
792 unsigned int sd_log_tail;
795 struct rw_semaphore sd_log_flush_lock;
796 atomic_t sd_log_in_flight;
797 struct bio *sd_log_bio;
798 wait_queue_head_t sd_log_flush_wait;
801 atomic_t sd_reserving_log;
802 wait_queue_head_t sd_reserving_log_wait;
804 unsigned int sd_log_flush_head;
805 u64 sd_log_flush_wrapped;
807 spinlock_t sd_ail_lock;
808 struct list_head sd_ail1_list;
809 struct list_head sd_ail2_list;
811 /* For quiescing the filesystem */
812 struct gfs2_holder sd_freeze_gh;
813 atomic_t sd_freeze_state;
814 struct mutex sd_freeze_mutex;
816 char sd_fsname[GFS2_FSNAME_LEN];
817 char sd_table_name[GFS2_FSNAME_LEN];
818 char sd_proto_name[GFS2_FSNAME_LEN];
822 unsigned long sd_last_warning;
823 struct dentry *debugfs_dir; /* debugfs directory */
824 struct dentry *debugfs_dentry_glocks;
825 struct dentry *debugfs_dentry_glstats;
826 struct dentry *debugfs_dentry_sbstats;
829 static inline void gfs2_glstats_inc(struct gfs2_glock *gl, int which)
831 gl->gl_stats.stats[which]++;
834 static inline void gfs2_sbstats_inc(const struct gfs2_glock *gl, int which)
836 const struct gfs2_sbd *sdp = gl->gl_sbd;
838 this_cpu_ptr(sdp->sd_lkstats)->lkstats[gl->gl_name.ln_type].stats[which]++;
842 #endif /* __INCORE_DOT_H__ */