1 /* -*- mode: c; c-basic-offset: 8; -*-
2 * vim: noexpandtab sw=8 ts=8 sts=0:
6 * Defines macros and structures used in OCFS2
8 * Copyright (C) 2002, 2004 Oracle. All rights reserved.
10 * This program is free software; you can redistribute it and/or
11 * modify it under the terms of the GNU General Public
12 * License as published by the Free Software Foundation; either
13 * version 2 of the License, or (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 * General Public License for more details.
20 * You should have received a copy of the GNU General Public
21 * License along with this program; if not, write to the
22 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 * Boston, MA 021110-1307, USA.
29 #include <linux/spinlock.h>
30 #include <linux/sched.h>
31 #include <linux/wait.h>
32 #include <linux/list.h>
33 #include <linux/rbtree.h>
34 #include <linux/workqueue.h>
35 #include <linux/kref.h>
36 #include <linux/mutex.h>
37 #ifndef CONFIG_OCFS2_COMPAT_JBD
38 # include <linux/jbd2.h>
40 # include <linux/jbd.h>
41 # include "ocfs2_jbd_compat.h"
44 /* For union ocfs2_dlm_lksb */
45 #include "stackglue.h"
48 #include "ocfs2_lockid.h"
50 /* For struct ocfs2_blockcheck_stats */
51 #include "blockcheck.h"
53 /* Most user visible OCFS2 inodes will have very few pieces of
54 * metadata, but larger files (including bitmaps, etc) must be taken
55 * into account when designing an access scheme. We allow a small
56 * amount of inlined blocks to be stored on an array and grow the
57 * structure into a rb tree when necessary. */
58 #define OCFS2_INODE_MAX_CACHE_ARRAY 2
60 struct ocfs2_caching_info
{
61 unsigned int ci_num_cached
;
63 sector_t ci_array
[OCFS2_INODE_MAX_CACHE_ARRAY
];
64 struct rb_root ci_tree
;
68 /* this limits us to 256 nodes
69 * if we need more, we can do a kmalloc for the map */
70 #define OCFS2_NODE_MAP_MAX_NODES 256
71 struct ocfs2_node_map
{
73 unsigned long map
[BITS_TO_LONGS(OCFS2_NODE_MAP_MAX_NODES
)];
76 enum ocfs2_ast_action
{
77 OCFS2_AST_INVALID
= 0,
80 OCFS2_AST_DOWNCONVERT
,
83 /* actions for an unlockast function to take. */
84 enum ocfs2_unlock_action
{
85 OCFS2_UNLOCK_INVALID
= 0,
86 OCFS2_UNLOCK_CANCEL_CONVERT
,
87 OCFS2_UNLOCK_DROP_LOCK
,
90 /* ocfs2_lock_res->l_flags flags. */
91 #define OCFS2_LOCK_ATTACHED (0x00000001) /* we have initialized
93 #define OCFS2_LOCK_BUSY (0x00000002) /* we are currently in
95 #define OCFS2_LOCK_BLOCKED (0x00000004) /* blocked waiting to
97 #define OCFS2_LOCK_LOCAL (0x00000008) /* newly created inode */
98 #define OCFS2_LOCK_NEEDS_REFRESH (0x00000010)
99 #define OCFS2_LOCK_REFRESHING (0x00000020)
100 #define OCFS2_LOCK_INITIALIZED (0x00000040) /* track initialization
101 * for shutdown paths */
102 #define OCFS2_LOCK_FREEING (0x00000080) /* help dlmglue track
103 * when to skip queueing
104 * a lock because it's
107 #define OCFS2_LOCK_QUEUED (0x00000100) /* queued for downconvert */
108 #define OCFS2_LOCK_NOCACHE (0x00000200) /* don't use a holder count */
109 #define OCFS2_LOCK_PENDING (0x00000400) /* This lockres is pending a
110 call to dlm_lock. Only
111 exists with BUSY set. */
113 struct ocfs2_lock_res_ops
;
115 typedef void (*ocfs2_lock_callback
)(int status
, unsigned long data
);
117 struct ocfs2_lock_res
{
119 struct ocfs2_lock_res_ops
*l_ops
;
122 struct list_head l_blocked_list
;
123 struct list_head l_mask_waiters
;
125 enum ocfs2_lock_type l_type
;
126 unsigned long l_flags
;
127 char l_name
[OCFS2_LOCK_ID_MAX_LEN
];
129 unsigned int l_ro_holders
;
130 unsigned int l_ex_holders
;
131 union ocfs2_dlm_lksb l_lksb
;
133 /* used from AST/BAST funcs. */
134 enum ocfs2_ast_action l_action
;
135 enum ocfs2_unlock_action l_unlock_action
;
138 unsigned int l_pending_gen
;
140 wait_queue_head_t l_event
;
142 struct list_head l_debug_list
;
144 #ifdef CONFIG_OCFS2_FS_STATS
145 unsigned long long l_lock_num_prmode
; /* PR acquires */
146 unsigned long long l_lock_num_exmode
; /* EX acquires */
147 unsigned int l_lock_num_prmode_failed
; /* Failed PR gets */
148 unsigned int l_lock_num_exmode_failed
; /* Failed EX gets */
149 unsigned long long l_lock_total_prmode
; /* Tot wait for PR */
150 unsigned long long l_lock_total_exmode
; /* Tot wait for EX */
151 unsigned int l_lock_max_prmode
; /* Max wait for PR */
152 unsigned int l_lock_max_exmode
; /* Max wait for EX */
153 unsigned int l_lock_refresh
; /* Disk refreshes */
157 enum ocfs2_orphan_scan_state
{
162 struct ocfs2_orphan_scan
{
163 struct mutex os_lock
;
164 struct ocfs2_super
*os_osb
;
165 struct ocfs2_lock_res os_lockres
; /* lock to synchronize scans */
166 struct delayed_work os_orphan_scan_work
;
167 struct timespec os_scantime
; /* time this node ran the scan */
168 u32 os_count
; /* tracks node specific scans */
169 u32 os_seqno
; /* tracks cluster wide scans */
170 atomic_t os_state
; /* ACTIVE or INACTIVE */
173 struct ocfs2_dlm_debug
{
174 struct kref d_refcnt
;
175 struct dentry
*d_locking_state
;
176 struct list_head d_lockres_tracking
;
183 VOLUME_MOUNTED_QUOTAS
,
188 struct ocfs2_alloc_stats
192 atomic_t bitmap_data
;
197 enum ocfs2_local_alloc_state
199 OCFS2_LA_UNUSED
= 0, /* Local alloc will never be used for
200 * this mountpoint. */
201 OCFS2_LA_ENABLED
, /* Local alloc is in use. */
202 OCFS2_LA_THROTTLED
, /* Local alloc is in use, but number
203 * of bits has been reduced. */
204 OCFS2_LA_DISABLED
/* Local alloc has temporarily been
208 enum ocfs2_mount_options
210 OCFS2_MOUNT_HB_LOCAL
= 1 << 0, /* Heartbeat started in local mode */
211 OCFS2_MOUNT_BARRIER
= 1 << 1, /* Use block barriers */
212 OCFS2_MOUNT_NOINTR
= 1 << 2, /* Don't catch signals */
213 OCFS2_MOUNT_ERRORS_PANIC
= 1 << 3, /* Panic on errors */
214 OCFS2_MOUNT_DATA_WRITEBACK
= 1 << 4, /* No data ordering */
215 OCFS2_MOUNT_LOCALFLOCKS
= 1 << 5, /* No cluster aware user file locks */
216 OCFS2_MOUNT_NOUSERXATTR
= 1 << 6, /* No user xattr */
217 OCFS2_MOUNT_INODE64
= 1 << 7, /* Allow inode numbers > 2^32 */
218 OCFS2_MOUNT_POSIX_ACL
= 1 << 8, /* POSIX access control lists */
219 OCFS2_MOUNT_USRQUOTA
= 1 << 9, /* We support user quotas */
220 OCFS2_MOUNT_GRPQUOTA
= 1 << 10, /* We support group quotas */
223 #define OCFS2_OSB_SOFT_RO 0x0001
224 #define OCFS2_OSB_HARD_RO 0x0002
225 #define OCFS2_OSB_ERROR_FS 0x0004
226 #define OCFS2_DEFAULT_ATIME_QUANTUM 60
228 struct ocfs2_journal
;
229 struct ocfs2_slot_info
;
230 struct ocfs2_recovery_map
;
231 struct ocfs2_replay_map
;
232 struct ocfs2_quota_recovery
;
233 struct ocfs2_dentry_lock
;
236 struct task_struct
*commit_task
;
237 struct super_block
*sb
;
238 struct inode
*root_inode
;
239 struct inode
*sys_root_inode
;
240 struct inode
*system_inodes
[NUM_SYSTEM_INODES
];
242 struct ocfs2_slot_info
*slot_info
;
244 u32
*slot_recovery_generations
;
246 spinlock_t node_map_lock
;
249 u64 system_dir_blkno
;
256 u64 first_cluster_group_blkno
;
259 u32 s_feature_compat
;
260 u32 s_feature_incompat
;
261 u32 s_feature_ro_compat
;
263 /* Protects s_next_generation, osb_flags and s_inode_steal_slot.
264 * Could protect more on osb as it's very short lived.
267 u32 s_next_generation
;
268 unsigned long osb_flags
;
269 s16 s_inode_steal_slot
;
270 atomic_t s_num_inodes_stolen
;
272 unsigned long s_mount_opt
;
273 unsigned int s_atime_quantum
;
275 unsigned int max_slots
;
276 unsigned int node_num
;
281 int s_clustersize_bits
;
282 unsigned int s_xattr_inline_size
;
285 struct mutex recovery_lock
;
286 struct ocfs2_recovery_map
*recovery_map
;
287 struct ocfs2_replay_map
*replay_map
;
288 struct task_struct
*recovery_thread_task
;
289 int disable_recovery
;
290 wait_queue_head_t checkpoint_event
;
291 atomic_t needs_checkpoint
;
292 struct ocfs2_journal
*journal
;
293 unsigned long osb_commit_interval
;
295 struct delayed_work la_enable_wq
;
298 * Must hold local alloc i_mutex and osb->osb_lock to change
299 * local_alloc_bits. Reads can be done under either lock.
301 unsigned int local_alloc_bits
;
302 unsigned int local_alloc_default_bits
;
304 enum ocfs2_local_alloc_state local_alloc_state
; /* protected
307 struct buffer_head
*local_alloc_bh
;
311 /* Next three fields are for local node slot recovery during
314 struct ocfs2_dinode
*local_alloc_copy
;
315 struct ocfs2_quota_recovery
*quota_rec
;
317 struct ocfs2_blockcheck_stats osb_ecc_stats
;
318 struct ocfs2_alloc_stats alloc_stats
;
319 char dev_str
[20]; /* "major,minor" of the device */
321 char osb_cluster_stack
[OCFS2_STACK_LABEL_LEN
+ 1];
322 struct ocfs2_cluster_connection
*cconn
;
323 struct ocfs2_lock_res osb_super_lockres
;
324 struct ocfs2_lock_res osb_rename_lockres
;
325 struct ocfs2_lock_res osb_nfs_sync_lockres
;
326 struct ocfs2_dlm_debug
*osb_dlm_debug
;
328 struct dentry
*osb_debug_root
;
329 struct dentry
*osb_ctxt
;
331 wait_queue_head_t recovery_event
;
333 spinlock_t dc_task_lock
;
334 struct task_struct
*dc_task
;
335 wait_queue_head_t dc_event
;
336 unsigned long dc_wake_sequence
;
337 unsigned long dc_work_sequence
;
340 * Any thread can add locks to the list, but the downconvert
341 * thread is the only one allowed to remove locks. Any change
342 * to this rule requires updating
343 * ocfs2_downconvert_thread_do_work().
345 struct list_head blocked_lock_list
;
346 unsigned long blocked_lock_count
;
348 /* List of dentry locks to release. Anyone can add locks to
349 * the list, ocfs2_wq processes the list */
350 struct ocfs2_dentry_lock
*dentry_lock_list
;
351 struct work_struct dentry_lock_work
;
353 wait_queue_head_t osb_mount_event
;
355 /* Truncate log info */
356 struct inode
*osb_tl_inode
;
357 struct buffer_head
*osb_tl_bh
;
358 struct delayed_work osb_truncate_log_wq
;
360 struct ocfs2_node_map osb_recovering_orphan_dirs
;
361 unsigned int *osb_orphan_wipes
;
362 wait_queue_head_t osb_wipe_event
;
364 struct ocfs2_orphan_scan osb_orphan_scan
;
366 /* used to protect metaecc calculation check of xattr. */
367 spinlock_t osb_xattr_lock
;
369 unsigned int osb_dx_mask
;
372 /* the group we used to allocate inodes. */
373 u64 osb_inode_alloc_group
;
376 #define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info)
378 /* Useful typedef for passing around journal access functions */
379 typedef int (*ocfs2_journal_access_func
)(handle_t
*handle
, struct inode
*inode
,
380 struct buffer_head
*bh
, int type
);
382 static inline int ocfs2_should_order_data(struct inode
*inode
)
384 if (!S_ISREG(inode
->i_mode
))
386 if (OCFS2_SB(inode
->i_sb
)->s_mount_opt
& OCFS2_MOUNT_DATA_WRITEBACK
)
391 static inline int ocfs2_sparse_alloc(struct ocfs2_super
*osb
)
393 if (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC
)
398 static inline int ocfs2_writes_unwritten_extents(struct ocfs2_super
*osb
)
401 * Support for sparse files is a pre-requisite
403 if (!ocfs2_sparse_alloc(osb
))
406 if (osb
->s_feature_ro_compat
& OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
)
411 static inline int ocfs2_supports_inline_data(struct ocfs2_super
*osb
)
413 if (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_INLINE_DATA
)
418 static inline int ocfs2_supports_xattr(struct ocfs2_super
*osb
)
420 if (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_XATTR
)
425 static inline int ocfs2_meta_ecc(struct ocfs2_super
*osb
)
427 if (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_META_ECC
)
432 static inline int ocfs2_supports_indexed_dirs(struct ocfs2_super
*osb
)
434 if (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS
)
439 static inline unsigned int ocfs2_link_max(struct ocfs2_super
*osb
)
441 if (ocfs2_supports_indexed_dirs(osb
))
442 return OCFS2_DX_LINK_MAX
;
443 return OCFS2_LINK_MAX
;
446 static inline unsigned int ocfs2_read_links_count(struct ocfs2_dinode
*di
)
448 u32 nlink
= le16_to_cpu(di
->i_links_count
);
449 u32 hi
= le16_to_cpu(di
->i_links_count_hi
);
451 if (di
->i_dyn_features
& cpu_to_le16(OCFS2_INDEXED_DIR_FL
))
452 nlink
|= (hi
<< OCFS2_LINKS_HI_SHIFT
);
457 static inline void ocfs2_set_links_count(struct ocfs2_dinode
*di
, u32 nlink
)
462 hi
= nlink
>> OCFS2_LINKS_HI_SHIFT
;
464 di
->i_links_count
= cpu_to_le16(lo
);
465 di
->i_links_count_hi
= cpu_to_le16(hi
);
468 static inline void ocfs2_add_links_count(struct ocfs2_dinode
*di
, int n
)
470 u32 links
= ocfs2_read_links_count(di
);
474 ocfs2_set_links_count(di
, links
);
477 /* set / clear functions because cluster events can make these happen
478 * in parallel so we want the transitions to be atomic. this also
479 * means that any future flags osb_flags must be protected by spinlock
481 static inline void ocfs2_set_osb_flag(struct ocfs2_super
*osb
,
484 spin_lock(&osb
->osb_lock
);
485 osb
->osb_flags
|= flag
;
486 spin_unlock(&osb
->osb_lock
);
489 static inline void ocfs2_set_ro_flag(struct ocfs2_super
*osb
,
492 spin_lock(&osb
->osb_lock
);
493 osb
->osb_flags
&= ~(OCFS2_OSB_SOFT_RO
|OCFS2_OSB_HARD_RO
);
495 osb
->osb_flags
|= OCFS2_OSB_HARD_RO
;
497 osb
->osb_flags
|= OCFS2_OSB_SOFT_RO
;
498 spin_unlock(&osb
->osb_lock
);
501 static inline int ocfs2_is_hard_readonly(struct ocfs2_super
*osb
)
505 spin_lock(&osb
->osb_lock
);
506 ret
= osb
->osb_flags
& OCFS2_OSB_HARD_RO
;
507 spin_unlock(&osb
->osb_lock
);
512 static inline int ocfs2_is_soft_readonly(struct ocfs2_super
*osb
)
516 spin_lock(&osb
->osb_lock
);
517 ret
= osb
->osb_flags
& OCFS2_OSB_SOFT_RO
;
518 spin_unlock(&osb
->osb_lock
);
523 static inline int ocfs2_userspace_stack(struct ocfs2_super
*osb
)
525 return (osb
->s_feature_incompat
&
526 OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK
);
529 static inline int ocfs2_mount_local(struct ocfs2_super
*osb
)
531 return (osb
->s_feature_incompat
& OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT
);
534 static inline int ocfs2_uses_extended_slot_map(struct ocfs2_super
*osb
)
536 return (osb
->s_feature_incompat
&
537 OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP
);
541 #define OCFS2_IS_VALID_DINODE(ptr) \
542 (!strcmp((ptr)->i_signature, OCFS2_INODE_SIGNATURE))
544 #define OCFS2_IS_VALID_EXTENT_BLOCK(ptr) \
545 (!strcmp((ptr)->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE))
547 #define OCFS2_IS_VALID_GROUP_DESC(ptr) \
548 (!strcmp((ptr)->bg_signature, OCFS2_GROUP_DESC_SIGNATURE))
551 #define OCFS2_IS_VALID_XATTR_BLOCK(ptr) \
552 (!strcmp((ptr)->xb_signature, OCFS2_XATTR_BLOCK_SIGNATURE))
554 #define OCFS2_IS_VALID_DIR_TRAILER(ptr) \
555 (!strcmp((ptr)->db_signature, OCFS2_DIR_TRAILER_SIGNATURE))
557 #define OCFS2_IS_VALID_DX_ROOT(ptr) \
558 (!strcmp((ptr)->dr_signature, OCFS2_DX_ROOT_SIGNATURE))
560 #define OCFS2_IS_VALID_DX_LEAF(ptr) \
561 (!strcmp((ptr)->dl_signature, OCFS2_DX_LEAF_SIGNATURE))
563 static inline unsigned long ino_from_blkno(struct super_block
*sb
,
566 return (unsigned long)(blkno
& (u64
)ULONG_MAX
);
569 static inline u64
ocfs2_clusters_to_blocks(struct super_block
*sb
,
572 int c_to_b_bits
= OCFS2_SB(sb
)->s_clustersize_bits
-
573 sb
->s_blocksize_bits
;
575 return (u64
)clusters
<< c_to_b_bits
;
578 static inline u32
ocfs2_blocks_to_clusters(struct super_block
*sb
,
581 int b_to_c_bits
= OCFS2_SB(sb
)->s_clustersize_bits
-
582 sb
->s_blocksize_bits
;
584 return (u32
)(blocks
>> b_to_c_bits
);
587 static inline unsigned int ocfs2_clusters_for_bytes(struct super_block
*sb
,
590 int cl_bits
= OCFS2_SB(sb
)->s_clustersize_bits
;
591 unsigned int clusters
;
593 bytes
+= OCFS2_SB(sb
)->s_clustersize
- 1;
594 /* OCFS2 just cannot have enough clusters to overflow this */
595 clusters
= (unsigned int)(bytes
>> cl_bits
);
600 static inline u64
ocfs2_blocks_for_bytes(struct super_block
*sb
,
603 bytes
+= sb
->s_blocksize
- 1;
604 return bytes
>> sb
->s_blocksize_bits
;
607 static inline u64
ocfs2_clusters_to_bytes(struct super_block
*sb
,
610 return (u64
)clusters
<< OCFS2_SB(sb
)->s_clustersize_bits
;
613 static inline u64
ocfs2_block_to_cluster_start(struct super_block
*sb
,
616 int bits
= OCFS2_SB(sb
)->s_clustersize_bits
- sb
->s_blocksize_bits
;
617 unsigned int clusters
;
619 clusters
= ocfs2_blocks_to_clusters(sb
, blocks
);
620 return (u64
)clusters
<< bits
;
623 static inline u64
ocfs2_align_bytes_to_clusters(struct super_block
*sb
,
626 int cl_bits
= OCFS2_SB(sb
)->s_clustersize_bits
;
627 unsigned int clusters
;
629 clusters
= ocfs2_clusters_for_bytes(sb
, bytes
);
630 return (u64
)clusters
<< cl_bits
;
633 static inline u64
ocfs2_align_bytes_to_blocks(struct super_block
*sb
,
638 blocks
= ocfs2_blocks_for_bytes(sb
, bytes
);
639 return blocks
<< sb
->s_blocksize_bits
;
642 static inline unsigned long ocfs2_align_bytes_to_sectors(u64 bytes
)
644 return (unsigned long)((bytes
+ 511) >> 9);
647 static inline unsigned int ocfs2_page_index_to_clusters(struct super_block
*sb
,
648 unsigned long pg_index
)
650 u32 clusters
= pg_index
;
651 unsigned int cbits
= OCFS2_SB(sb
)->s_clustersize_bits
;
653 if (unlikely(PAGE_CACHE_SHIFT
> cbits
))
654 clusters
= pg_index
<< (PAGE_CACHE_SHIFT
- cbits
);
655 else if (PAGE_CACHE_SHIFT
< cbits
)
656 clusters
= pg_index
>> (cbits
- PAGE_CACHE_SHIFT
);
662 * Find the 1st page index which covers the given clusters.
664 static inline pgoff_t
ocfs2_align_clusters_to_page_index(struct super_block
*sb
,
667 unsigned int cbits
= OCFS2_SB(sb
)->s_clustersize_bits
;
668 pgoff_t index
= clusters
;
670 if (PAGE_CACHE_SHIFT
> cbits
) {
671 index
= (pgoff_t
)clusters
>> (PAGE_CACHE_SHIFT
- cbits
);
672 } else if (PAGE_CACHE_SHIFT
< cbits
) {
673 index
= (pgoff_t
)clusters
<< (cbits
- PAGE_CACHE_SHIFT
);
679 static inline unsigned int ocfs2_pages_per_cluster(struct super_block
*sb
)
681 unsigned int cbits
= OCFS2_SB(sb
)->s_clustersize_bits
;
682 unsigned int pages_per_cluster
= 1;
684 if (PAGE_CACHE_SHIFT
< cbits
)
685 pages_per_cluster
= 1 << (cbits
- PAGE_CACHE_SHIFT
);
687 return pages_per_cluster
;
690 static inline unsigned int ocfs2_megabytes_to_clusters(struct super_block
*sb
,
693 BUILD_BUG_ON(OCFS2_MAX_CLUSTERSIZE
> 1048576);
695 return megs
<< (20 - OCFS2_SB(sb
)->s_clustersize_bits
);
698 static inline void ocfs2_init_inode_steal_slot(struct ocfs2_super
*osb
)
700 spin_lock(&osb
->osb_lock
);
701 osb
->s_inode_steal_slot
= OCFS2_INVALID_SLOT
;
702 spin_unlock(&osb
->osb_lock
);
703 atomic_set(&osb
->s_num_inodes_stolen
, 0);
706 static inline void ocfs2_set_inode_steal_slot(struct ocfs2_super
*osb
,
709 spin_lock(&osb
->osb_lock
);
710 osb
->s_inode_steal_slot
= slot
;
711 spin_unlock(&osb
->osb_lock
);
714 static inline s16
ocfs2_get_inode_steal_slot(struct ocfs2_super
*osb
)
718 spin_lock(&osb
->osb_lock
);
719 slot
= osb
->s_inode_steal_slot
;
720 spin_unlock(&osb
->osb_lock
);
725 #define ocfs2_set_bit ext2_set_bit
726 #define ocfs2_clear_bit ext2_clear_bit
727 #define ocfs2_test_bit ext2_test_bit
728 #define ocfs2_find_next_zero_bit ext2_find_next_zero_bit
729 #define ocfs2_find_next_bit ext2_find_next_bit