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26#ifndef OCFS2_H
27#define OCFS2_H
28
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#include <linux/lockdep.h>
38#include <linux/jbd2.h>
39
40
41#include "stackglue.h"
42
43#include "ocfs2_fs.h"
44#include "ocfs2_lockid.h"
45
46
47#include "blockcheck.h"
48
49
50
51
52
53
54
55
56
57#define OCFS2_CACHE_INFO_MAX_ARRAY 2
58
59
60
61enum ocfs2_caching_info_flags {
62
63 OCFS2_CACHE_FL_INLINE = 1<<1,
64};
65
66struct ocfs2_caching_operations;
67struct ocfs2_caching_info {
68
69
70
71
72
73 const struct ocfs2_caching_operations *ci_ops;
74
75
76
77 unsigned long ci_created_trans;
78
79 unsigned long ci_last_trans;
80
81
82 unsigned int ci_flags;
83 unsigned int ci_num_cached;
84 union {
85 sector_t ci_array[OCFS2_CACHE_INFO_MAX_ARRAY];
86 struct rb_root ci_tree;
87 } ci_cache;
88};
89
90
91
92
93struct super_block *ocfs2_metadata_cache_get_super(struct ocfs2_caching_info *ci);
94
95
96
97#define OCFS2_NODE_MAP_MAX_NODES 256
98struct ocfs2_node_map {
99 u16 num_nodes;
100 unsigned long map[BITS_TO_LONGS(OCFS2_NODE_MAP_MAX_NODES)];
101};
102
103enum ocfs2_ast_action {
104 OCFS2_AST_INVALID = 0,
105 OCFS2_AST_ATTACH,
106 OCFS2_AST_CONVERT,
107 OCFS2_AST_DOWNCONVERT,
108};
109
110
111enum ocfs2_unlock_action {
112 OCFS2_UNLOCK_INVALID = 0,
113 OCFS2_UNLOCK_CANCEL_CONVERT,
114 OCFS2_UNLOCK_DROP_LOCK,
115};
116
117
118#define OCFS2_LOCK_ATTACHED (0x00000001)
119
120#define OCFS2_LOCK_BUSY (0x00000002)
121
122#define OCFS2_LOCK_BLOCKED (0x00000004)
123
124#define OCFS2_LOCK_LOCAL (0x00000008)
125#define OCFS2_LOCK_NEEDS_REFRESH (0x00000010)
126#define OCFS2_LOCK_REFRESHING (0x00000020)
127#define OCFS2_LOCK_INITIALIZED (0x00000040)
128
129#define OCFS2_LOCK_FREEING (0x00000080)
130
131
132
133
134#define OCFS2_LOCK_QUEUED (0x00000100)
135#define OCFS2_LOCK_NOCACHE (0x00000200)
136#define OCFS2_LOCK_PENDING (0x00000400)
137
138
139
140struct ocfs2_lock_res_ops;
141
142typedef void (*ocfs2_lock_callback)(int status, unsigned long data);
143
144struct ocfs2_lock_res {
145 void *l_priv;
146 struct ocfs2_lock_res_ops *l_ops;
147 spinlock_t l_lock;
148
149 struct list_head l_blocked_list;
150 struct list_head l_mask_waiters;
151
152 enum ocfs2_lock_type l_type;
153 unsigned long l_flags;
154 char l_name[OCFS2_LOCK_ID_MAX_LEN];
155 int l_level;
156 unsigned int l_ro_holders;
157 unsigned int l_ex_holders;
158 union ocfs2_dlm_lksb l_lksb;
159
160
161 enum ocfs2_ast_action l_action;
162 enum ocfs2_unlock_action l_unlock_action;
163 int l_requested;
164 int l_blocking;
165 unsigned int l_pending_gen;
166
167 wait_queue_head_t l_event;
168
169 struct list_head l_debug_list;
170
171#ifdef CONFIG_OCFS2_FS_STATS
172 unsigned long long l_lock_num_prmode;
173 unsigned long long l_lock_num_exmode;
174 unsigned int l_lock_num_prmode_failed;
175 unsigned int l_lock_num_exmode_failed;
176 unsigned long long l_lock_total_prmode;
177 unsigned long long l_lock_total_exmode;
178 unsigned int l_lock_max_prmode;
179 unsigned int l_lock_max_exmode;
180 unsigned int l_lock_refresh;
181#endif
182#ifdef CONFIG_DEBUG_LOCK_ALLOC
183 struct lockdep_map l_lockdep_map;
184#endif
185};
186
187enum ocfs2_orphan_scan_state {
188 ORPHAN_SCAN_ACTIVE,
189 ORPHAN_SCAN_INACTIVE
190};
191
192struct ocfs2_orphan_scan {
193 struct mutex os_lock;
194 struct ocfs2_super *os_osb;
195 struct ocfs2_lock_res os_lockres;
196 struct delayed_work os_orphan_scan_work;
197 struct timespec os_scantime;
198 u32 os_count;
199 u32 os_seqno;
200 atomic_t os_state;
201};
202
203struct ocfs2_dlm_debug {
204 struct kref d_refcnt;
205 struct dentry *d_locking_state;
206 struct list_head d_lockres_tracking;
207};
208
209enum ocfs2_vol_state
210{
211 VOLUME_INIT = 0,
212 VOLUME_MOUNTED,
213 VOLUME_MOUNTED_QUOTAS,
214 VOLUME_DISMOUNTED,
215 VOLUME_DISABLED
216};
217
218struct ocfs2_alloc_stats
219{
220 atomic_t moves;
221 atomic_t local_data;
222 atomic_t bitmap_data;
223 atomic_t bg_allocs;
224 atomic_t bg_extends;
225};
226
227enum ocfs2_local_alloc_state
228{
229 OCFS2_LA_UNUSED = 0,
230
231 OCFS2_LA_ENABLED,
232 OCFS2_LA_THROTTLED,
233
234 OCFS2_LA_DISABLED
235
236};
237
238enum ocfs2_mount_options
239{
240 OCFS2_MOUNT_HB_LOCAL = 1 << 0,
241 OCFS2_MOUNT_BARRIER = 1 << 1,
242 OCFS2_MOUNT_NOINTR = 1 << 2,
243 OCFS2_MOUNT_ERRORS_PANIC = 1 << 3,
244 OCFS2_MOUNT_DATA_WRITEBACK = 1 << 4,
245 OCFS2_MOUNT_LOCALFLOCKS = 1 << 5,
246 OCFS2_MOUNT_NOUSERXATTR = 1 << 6,
247 OCFS2_MOUNT_INODE64 = 1 << 7,
248 OCFS2_MOUNT_POSIX_ACL = 1 << 8,
249 OCFS2_MOUNT_USRQUOTA = 1 << 9,
250 OCFS2_MOUNT_GRPQUOTA = 1 << 10,
251};
252
253#define OCFS2_OSB_SOFT_RO 0x0001
254#define OCFS2_OSB_HARD_RO 0x0002
255#define OCFS2_OSB_ERROR_FS 0x0004
256#define OCFS2_OSB_DROP_DENTRY_LOCK_IMMED 0x0008
257
258#define OCFS2_DEFAULT_ATIME_QUANTUM 60
259
260struct ocfs2_journal;
261struct ocfs2_slot_info;
262struct ocfs2_recovery_map;
263struct ocfs2_replay_map;
264struct ocfs2_quota_recovery;
265struct ocfs2_dentry_lock;
266struct ocfs2_super
267{
268 struct task_struct *commit_task;
269 struct super_block *sb;
270 struct inode *root_inode;
271 struct inode *sys_root_inode;
272 struct inode *system_inodes[NUM_SYSTEM_INODES];
273
274 struct ocfs2_slot_info *slot_info;
275
276 u32 *slot_recovery_generations;
277
278 spinlock_t node_map_lock;
279
280 u64 root_blkno;
281 u64 system_dir_blkno;
282 u64 bitmap_blkno;
283 u32 bitmap_cpg;
284 u8 *uuid;
285 char *uuid_str;
286 u32 uuid_hash;
287 u8 *vol_label;
288 u64 first_cluster_group_blkno;
289 u32 fs_generation;
290
291 u32 s_feature_compat;
292 u32 s_feature_incompat;
293 u32 s_feature_ro_compat;
294
295
296
297
298 spinlock_t osb_lock;
299 u32 s_next_generation;
300 unsigned long osb_flags;
301 s16 s_inode_steal_slot;
302 atomic_t s_num_inodes_stolen;
303
304 unsigned long s_mount_opt;
305 unsigned int s_atime_quantum;
306
307 unsigned int max_slots;
308 unsigned int node_num;
309 int slot_num;
310 int preferred_slot;
311 int s_sectsize_bits;
312 int s_clustersize;
313 int s_clustersize_bits;
314 unsigned int s_xattr_inline_size;
315
316 atomic_t vol_state;
317 struct mutex recovery_lock;
318 struct ocfs2_recovery_map *recovery_map;
319 struct ocfs2_replay_map *replay_map;
320 struct task_struct *recovery_thread_task;
321 int disable_recovery;
322 wait_queue_head_t checkpoint_event;
323 atomic_t needs_checkpoint;
324 struct ocfs2_journal *journal;
325 unsigned long osb_commit_interval;
326
327 struct delayed_work la_enable_wq;
328
329
330
331
332
333 unsigned int local_alloc_bits;
334 unsigned int local_alloc_default_bits;
335
336 enum ocfs2_local_alloc_state local_alloc_state;
337
338
339 struct buffer_head *local_alloc_bh;
340
341 u64 la_last_gd;
342
343
344
345 int dirty;
346 struct ocfs2_dinode *local_alloc_copy;
347 struct ocfs2_quota_recovery *quota_rec;
348
349 struct ocfs2_blockcheck_stats osb_ecc_stats;
350 struct ocfs2_alloc_stats alloc_stats;
351 char dev_str[20];
352
353 char osb_cluster_stack[OCFS2_STACK_LABEL_LEN + 1];
354 struct ocfs2_cluster_connection *cconn;
355 struct ocfs2_lock_res osb_super_lockres;
356 struct ocfs2_lock_res osb_rename_lockres;
357 struct ocfs2_lock_res osb_nfs_sync_lockres;
358 struct ocfs2_dlm_debug *osb_dlm_debug;
359
360 struct dentry *osb_debug_root;
361 struct dentry *osb_ctxt;
362
363 wait_queue_head_t recovery_event;
364
365 spinlock_t dc_task_lock;
366 struct task_struct *dc_task;
367 wait_queue_head_t dc_event;
368 unsigned long dc_wake_sequence;
369 unsigned long dc_work_sequence;
370
371
372
373
374
375
376
377 struct list_head blocked_lock_list;
378 unsigned long blocked_lock_count;
379
380
381
382 struct ocfs2_dentry_lock *dentry_lock_list;
383 struct work_struct dentry_lock_work;
384
385 wait_queue_head_t osb_mount_event;
386
387
388 struct inode *osb_tl_inode;
389 struct buffer_head *osb_tl_bh;
390 struct delayed_work osb_truncate_log_wq;
391
392 struct ocfs2_node_map osb_recovering_orphan_dirs;
393 unsigned int *osb_orphan_wipes;
394 wait_queue_head_t osb_wipe_event;
395
396 struct ocfs2_orphan_scan osb_orphan_scan;
397
398
399 spinlock_t osb_xattr_lock;
400
401 unsigned int osb_dx_mask;
402 u32 osb_dx_seed[4];
403
404
405 u64 osb_inode_alloc_group;
406
407
408 struct rb_root osb_rf_lock_tree;
409 struct ocfs2_refcount_tree *osb_ref_tree_lru;
410};
411
412#define OCFS2_SB(sb) ((struct ocfs2_super *)(sb)->s_fs_info)
413
414
415typedef int (*ocfs2_journal_access_func)(handle_t *handle,
416 struct ocfs2_caching_info *ci,
417 struct buffer_head *bh, int type);
418
419static inline int ocfs2_should_order_data(struct inode *inode)
420{
421 if (!S_ISREG(inode->i_mode))
422 return 0;
423 if (OCFS2_SB(inode->i_sb)->s_mount_opt & OCFS2_MOUNT_DATA_WRITEBACK)
424 return 0;
425 return 1;
426}
427
428static inline int ocfs2_sparse_alloc(struct ocfs2_super *osb)
429{
430 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC)
431 return 1;
432 return 0;
433}
434
435static inline int ocfs2_writes_unwritten_extents(struct ocfs2_super *osb)
436{
437
438
439
440 if (!ocfs2_sparse_alloc(osb))
441 return 0;
442
443 if (osb->s_feature_ro_compat & OCFS2_FEATURE_RO_COMPAT_UNWRITTEN)
444 return 1;
445 return 0;
446}
447
448static inline int ocfs2_supports_inline_data(struct ocfs2_super *osb)
449{
450 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_INLINE_DATA)
451 return 1;
452 return 0;
453}
454
455static inline int ocfs2_supports_xattr(struct ocfs2_super *osb)
456{
457 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_XATTR)
458 return 1;
459 return 0;
460}
461
462static inline int ocfs2_meta_ecc(struct ocfs2_super *osb)
463{
464 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_META_ECC)
465 return 1;
466 return 0;
467}
468
469static inline int ocfs2_supports_indexed_dirs(struct ocfs2_super *osb)
470{
471 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_INDEXED_DIRS)
472 return 1;
473 return 0;
474}
475
476static inline unsigned int ocfs2_link_max(struct ocfs2_super *osb)
477{
478 if (ocfs2_supports_indexed_dirs(osb))
479 return OCFS2_DX_LINK_MAX;
480 return OCFS2_LINK_MAX;
481}
482
483static inline unsigned int ocfs2_read_links_count(struct ocfs2_dinode *di)
484{
485 u32 nlink = le16_to_cpu(di->i_links_count);
486 u32 hi = le16_to_cpu(di->i_links_count_hi);
487
488 if (di->i_dyn_features & cpu_to_le16(OCFS2_INDEXED_DIR_FL))
489 nlink |= (hi << OCFS2_LINKS_HI_SHIFT);
490
491 return nlink;
492}
493
494static inline void ocfs2_set_links_count(struct ocfs2_dinode *di, u32 nlink)
495{
496 u16 lo, hi;
497
498 lo = nlink;
499 hi = nlink >> OCFS2_LINKS_HI_SHIFT;
500
501 di->i_links_count = cpu_to_le16(lo);
502 di->i_links_count_hi = cpu_to_le16(hi);
503}
504
505static inline void ocfs2_add_links_count(struct ocfs2_dinode *di, int n)
506{
507 u32 links = ocfs2_read_links_count(di);
508
509 links += n;
510
511 ocfs2_set_links_count(di, links);
512}
513
514static inline int ocfs2_refcount_tree(struct ocfs2_super *osb)
515{
516 if (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_REFCOUNT_TREE)
517 return 1;
518 return 0;
519}
520
521
522
523
524
525static inline void ocfs2_set_osb_flag(struct ocfs2_super *osb,
526 unsigned long flag)
527{
528 spin_lock(&osb->osb_lock);
529 osb->osb_flags |= flag;
530 spin_unlock(&osb->osb_lock);
531}
532
533
534static inline unsigned long ocfs2_test_osb_flag(struct ocfs2_super *osb,
535 unsigned long flag)
536{
537 unsigned long ret;
538
539 spin_lock(&osb->osb_lock);
540 ret = osb->osb_flags & flag;
541 spin_unlock(&osb->osb_lock);
542 return ret;
543}
544
545static inline void ocfs2_set_ro_flag(struct ocfs2_super *osb,
546 int hard)
547{
548 spin_lock(&osb->osb_lock);
549 osb->osb_flags &= ~(OCFS2_OSB_SOFT_RO|OCFS2_OSB_HARD_RO);
550 if (hard)
551 osb->osb_flags |= OCFS2_OSB_HARD_RO;
552 else
553 osb->osb_flags |= OCFS2_OSB_SOFT_RO;
554 spin_unlock(&osb->osb_lock);
555}
556
557static inline int ocfs2_is_hard_readonly(struct ocfs2_super *osb)
558{
559 int ret;
560
561 spin_lock(&osb->osb_lock);
562 ret = osb->osb_flags & OCFS2_OSB_HARD_RO;
563 spin_unlock(&osb->osb_lock);
564
565 return ret;
566}
567
568static inline int ocfs2_is_soft_readonly(struct ocfs2_super *osb)
569{
570 int ret;
571
572 spin_lock(&osb->osb_lock);
573 ret = osb->osb_flags & OCFS2_OSB_SOFT_RO;
574 spin_unlock(&osb->osb_lock);
575
576 return ret;
577}
578
579static inline int ocfs2_userspace_stack(struct ocfs2_super *osb)
580{
581 return (osb->s_feature_incompat &
582 OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK);
583}
584
585static inline int ocfs2_mount_local(struct ocfs2_super *osb)
586{
587 return (osb->s_feature_incompat & OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT);
588}
589
590static inline int ocfs2_uses_extended_slot_map(struct ocfs2_super *osb)
591{
592 return (osb->s_feature_incompat &
593 OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP);
594}
595
596
597#define OCFS2_IS_VALID_DINODE(ptr) \
598 (!strcmp((ptr)->i_signature, OCFS2_INODE_SIGNATURE))
599
600#define OCFS2_IS_VALID_EXTENT_BLOCK(ptr) \
601 (!strcmp((ptr)->h_signature, OCFS2_EXTENT_BLOCK_SIGNATURE))
602
603#define OCFS2_IS_VALID_GROUP_DESC(ptr) \
604 (!strcmp((ptr)->bg_signature, OCFS2_GROUP_DESC_SIGNATURE))
605
606
607#define OCFS2_IS_VALID_XATTR_BLOCK(ptr) \
608 (!strcmp((ptr)->xb_signature, OCFS2_XATTR_BLOCK_SIGNATURE))
609
610#define OCFS2_IS_VALID_DIR_TRAILER(ptr) \
611 (!strcmp((ptr)->db_signature, OCFS2_DIR_TRAILER_SIGNATURE))
612
613#define OCFS2_IS_VALID_DX_ROOT(ptr) \
614 (!strcmp((ptr)->dr_signature, OCFS2_DX_ROOT_SIGNATURE))
615
616#define OCFS2_IS_VALID_DX_LEAF(ptr) \
617 (!strcmp((ptr)->dl_signature, OCFS2_DX_LEAF_SIGNATURE))
618
619#define OCFS2_IS_VALID_REFCOUNT_BLOCK(ptr) \
620 (!strcmp((ptr)->rf_signature, OCFS2_REFCOUNT_BLOCK_SIGNATURE))
621
622static inline unsigned long ino_from_blkno(struct super_block *sb,
623 u64 blkno)
624{
625 return (unsigned long)(blkno & (u64)ULONG_MAX);
626}
627
628static inline u64 ocfs2_clusters_to_blocks(struct super_block *sb,
629 u32 clusters)
630{
631 int c_to_b_bits = OCFS2_SB(sb)->s_clustersize_bits -
632 sb->s_blocksize_bits;
633
634 return (u64)clusters << c_to_b_bits;
635}
636
637static inline u32 ocfs2_blocks_to_clusters(struct super_block *sb,
638 u64 blocks)
639{
640 int b_to_c_bits = OCFS2_SB(sb)->s_clustersize_bits -
641 sb->s_blocksize_bits;
642
643 return (u32)(blocks >> b_to_c_bits);
644}
645
646static inline unsigned int ocfs2_clusters_for_bytes(struct super_block *sb,
647 u64 bytes)
648{
649 int cl_bits = OCFS2_SB(sb)->s_clustersize_bits;
650 unsigned int clusters;
651
652 bytes += OCFS2_SB(sb)->s_clustersize - 1;
653
654 clusters = (unsigned int)(bytes >> cl_bits);
655
656 return clusters;
657}
658
659static inline u64 ocfs2_blocks_for_bytes(struct super_block *sb,
660 u64 bytes)
661{
662 bytes += sb->s_blocksize - 1;
663 return bytes >> sb->s_blocksize_bits;
664}
665
666static inline u64 ocfs2_clusters_to_bytes(struct super_block *sb,
667 u32 clusters)
668{
669 return (u64)clusters << OCFS2_SB(sb)->s_clustersize_bits;
670}
671
672static inline u64 ocfs2_block_to_cluster_start(struct super_block *sb,
673 u64 blocks)
674{
675 int bits = OCFS2_SB(sb)->s_clustersize_bits - sb->s_blocksize_bits;
676 unsigned int clusters;
677
678 clusters = ocfs2_blocks_to_clusters(sb, blocks);
679 return (u64)clusters << bits;
680}
681
682static inline u64 ocfs2_align_bytes_to_clusters(struct super_block *sb,
683 u64 bytes)
684{
685 int cl_bits = OCFS2_SB(sb)->s_clustersize_bits;
686 unsigned int clusters;
687
688 clusters = ocfs2_clusters_for_bytes(sb, bytes);
689 return (u64)clusters << cl_bits;
690}
691
692static inline u64 ocfs2_align_bytes_to_blocks(struct super_block *sb,
693 u64 bytes)
694{
695 u64 blocks;
696
697 blocks = ocfs2_blocks_for_bytes(sb, bytes);
698 return blocks << sb->s_blocksize_bits;
699}
700
701static inline unsigned long ocfs2_align_bytes_to_sectors(u64 bytes)
702{
703 return (unsigned long)((bytes + 511) >> 9);
704}
705
706static inline unsigned int ocfs2_page_index_to_clusters(struct super_block *sb,
707 unsigned long pg_index)
708{
709 u32 clusters = pg_index;
710 unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits;
711
712 if (unlikely(PAGE_CACHE_SHIFT > cbits))
713 clusters = pg_index << (PAGE_CACHE_SHIFT - cbits);
714 else if (PAGE_CACHE_SHIFT < cbits)
715 clusters = pg_index >> (cbits - PAGE_CACHE_SHIFT);
716
717 return clusters;
718}
719
720
721
722
723static inline pgoff_t ocfs2_align_clusters_to_page_index(struct super_block *sb,
724 u32 clusters)
725{
726 unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits;
727 pgoff_t index = clusters;
728
729 if (PAGE_CACHE_SHIFT > cbits) {
730 index = (pgoff_t)clusters >> (PAGE_CACHE_SHIFT - cbits);
731 } else if (PAGE_CACHE_SHIFT < cbits) {
732 index = (pgoff_t)clusters << (cbits - PAGE_CACHE_SHIFT);
733 }
734
735 return index;
736}
737
738static inline unsigned int ocfs2_pages_per_cluster(struct super_block *sb)
739{
740 unsigned int cbits = OCFS2_SB(sb)->s_clustersize_bits;
741 unsigned int pages_per_cluster = 1;
742
743 if (PAGE_CACHE_SHIFT < cbits)
744 pages_per_cluster = 1 << (cbits - PAGE_CACHE_SHIFT);
745
746 return pages_per_cluster;
747}
748
749static inline unsigned int ocfs2_megabytes_to_clusters(struct super_block *sb,
750 unsigned int megs)
751{
752 BUILD_BUG_ON(OCFS2_MAX_CLUSTERSIZE > 1048576);
753
754 return megs << (20 - OCFS2_SB(sb)->s_clustersize_bits);
755}
756
757static inline void ocfs2_init_inode_steal_slot(struct ocfs2_super *osb)
758{
759 spin_lock(&osb->osb_lock);
760 osb->s_inode_steal_slot = OCFS2_INVALID_SLOT;
761 spin_unlock(&osb->osb_lock);
762 atomic_set(&osb->s_num_inodes_stolen, 0);
763}
764
765static inline void ocfs2_set_inode_steal_slot(struct ocfs2_super *osb,
766 s16 slot)
767{
768 spin_lock(&osb->osb_lock);
769 osb->s_inode_steal_slot = slot;
770 spin_unlock(&osb->osb_lock);
771}
772
773static inline s16 ocfs2_get_inode_steal_slot(struct ocfs2_super *osb)
774{
775 s16 slot;
776
777 spin_lock(&osb->osb_lock);
778 slot = osb->s_inode_steal_slot;
779 spin_unlock(&osb->osb_lock);
780
781 return slot;
782}
783
784#define ocfs2_set_bit ext2_set_bit
785#define ocfs2_clear_bit ext2_clear_bit
786#define ocfs2_test_bit ext2_test_bit
787#define ocfs2_find_next_zero_bit ext2_find_next_zero_bit
788#define ocfs2_find_next_bit ext2_find_next_bit
789#endif
790
791