1 /* Copyright 1996-2000 Hans Reiser, see reiserfs/README for licensing
2 * and copyright details */
4 #ifndef _LINUX_REISER_FS_SB
5 #define _LINUX_REISER_FS_SB
8 #include <linux/workqueue.h>
9 #include <linux/rwsem.h>
13 reiserfs_attrs_cleared = 0x00000001,
14 } reiserfs_super_block_flags;
16 /* struct reiserfs_super_block accessors/mutators
17 * since this is a disk structure, it will always be in
18 * little endian format. */
19 #define sb_block_count(sbp) (le32_to_cpu((sbp)->s_v1.s_block_count))
20 #define set_sb_block_count(sbp,v) ((sbp)->s_v1.s_block_count = cpu_to_le32(v))
21 #define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_v1.s_free_blocks))
22 #define set_sb_free_blocks(sbp,v) ((sbp)->s_v1.s_free_blocks = cpu_to_le32(v))
23 #define sb_root_block(sbp) (le32_to_cpu((sbp)->s_v1.s_root_block))
24 #define set_sb_root_block(sbp,v) ((sbp)->s_v1.s_root_block = cpu_to_le32(v))
26 #define sb_jp_journal_1st_block(sbp) \
27 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_1st_block))
28 #define set_sb_jp_journal_1st_block(sbp,v) \
29 ((sbp)->s_v1.s_journal.jp_journal_1st_block = cpu_to_le32(v))
30 #define sb_jp_journal_dev(sbp) \
31 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_dev))
32 #define set_sb_jp_journal_dev(sbp,v) \
33 ((sbp)->s_v1.s_journal.jp_journal_dev = cpu_to_le32(v))
34 #define sb_jp_journal_size(sbp) \
35 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_size))
36 #define set_sb_jp_journal_size(sbp,v) \
37 ((sbp)->s_v1.s_journal.jp_journal_size = cpu_to_le32(v))
38 #define sb_jp_journal_trans_max(sbp) \
39 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_trans_max))
40 #define set_sb_jp_journal_trans_max(sbp,v) \
41 ((sbp)->s_v1.s_journal.jp_journal_trans_max = cpu_to_le32(v))
42 #define sb_jp_journal_magic(sbp) \
43 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_magic))
44 #define set_sb_jp_journal_magic(sbp,v) \
45 ((sbp)->s_v1.s_journal.jp_journal_magic = cpu_to_le32(v))
46 #define sb_jp_journal_max_batch(sbp) \
47 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_batch))
48 #define set_sb_jp_journal_max_batch(sbp,v) \
49 ((sbp)->s_v1.s_journal.jp_journal_max_batch = cpu_to_le32(v))
50 #define sb_jp_jourmal_max_commit_age(sbp) \
51 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_commit_age))
52 #define set_sb_jp_journal_max_commit_age(sbp,v) \
53 ((sbp)->s_v1.s_journal.jp_journal_max_commit_age = cpu_to_le32(v))
55 #define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_v1.s_blocksize))
56 #define set_sb_blocksize(sbp,v) ((sbp)->s_v1.s_blocksize = cpu_to_le16(v))
57 #define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_maxsize))
58 #define set_sb_oid_maxsize(sbp,v) ((sbp)->s_v1.s_oid_maxsize = cpu_to_le16(v))
59 #define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_cursize))
60 #define set_sb_oid_cursize(sbp,v) ((sbp)->s_v1.s_oid_cursize = cpu_to_le16(v))
61 #define sb_umount_state(sbp) (le16_to_cpu((sbp)->s_v1.s_umount_state))
62 #define set_sb_umount_state(sbp,v) ((sbp)->s_v1.s_umount_state = cpu_to_le16(v))
63 #define sb_fs_state(sbp) (le16_to_cpu((sbp)->s_v1.s_fs_state))
64 #define set_sb_fs_state(sbp,v) ((sbp)->s_v1.s_fs_state = cpu_to_le16(v))
65 #define sb_hash_function_code(sbp) \
66 (le32_to_cpu((sbp)->s_v1.s_hash_function_code))
67 #define set_sb_hash_function_code(sbp,v) \
68 ((sbp)->s_v1.s_hash_function_code = cpu_to_le32(v))
69 #define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_v1.s_tree_height))
70 #define set_sb_tree_height(sbp,v) ((sbp)->s_v1.s_tree_height = cpu_to_le16(v))
71 #define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_v1.s_bmap_nr))
72 #define set_sb_bmap_nr(sbp,v) ((sbp)->s_v1.s_bmap_nr = cpu_to_le16(v))
73 #define sb_version(sbp) (le16_to_cpu((sbp)->s_v1.s_version))
74 #define set_sb_version(sbp,v) ((sbp)->s_v1.s_version = cpu_to_le16(v))
76 #define sb_mnt_count(sbp) (le16_to_cpu((sbp)->s_mnt_count))
77 #define set_sb_mnt_count(sbp, v) ((sbp)->s_mnt_count = cpu_to_le16(v))
79 #define sb_reserved_for_journal(sbp) \
80 (le16_to_cpu((sbp)->s_v1.s_reserved_for_journal))
81 #define set_sb_reserved_for_journal(sbp,v) \
82 ((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v))
86 /* These all interelate for performance.
88 ** If the journal block count is smaller than n transactions, you lose speed.
89 ** I don't know what n is yet, I'm guessing 8-16.
91 ** typical transaction size depends on the application, how often fsync is
92 ** called, and how many metadata blocks you dirty in a 30 second period.
93 ** The more small files (<16k) you use, the larger your transactions will
96 ** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal
97 ** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough
98 ** to prevent wrapping before dirty meta blocks get to disk.
100 ** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal
101 ** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping.
103 ** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
107 /* don't mess with these for a while */
108 /* we have a node size define somewhere in reiserfs_fs.h. -Hans */
109 #define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */
110 #define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */
111 #define JOURNAL_HASH_SIZE 8192
112 #define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */
114 /* One of these for every block in every transaction
115 ** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a
116 ** hash of all the in memory transactions.
117 ** next and prev are used by the current transaction (journal_hash).
118 ** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash
119 ** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging
120 ** to a given transaction.
122 struct reiserfs_journal_cnode {
123 struct buffer_head *bh; /* real buffer head */
124 struct super_block *sb; /* dev of real buffer head */
125 __u32 blocknr; /* block number of real buffer head, == 0 when buffer on disk */
127 struct reiserfs_journal_list *jlist; /* journal list this cnode lives in */
128 struct reiserfs_journal_cnode *next; /* next in transaction list */
129 struct reiserfs_journal_cnode *prev; /* prev in transaction list */
130 struct reiserfs_journal_cnode *hprev; /* prev in hash list */
131 struct reiserfs_journal_cnode *hnext; /* next in hash list */
134 struct reiserfs_bitmap_node {
137 struct list_head list;
140 struct reiserfs_list_bitmap {
141 struct reiserfs_journal_list *journal_list;
142 struct reiserfs_bitmap_node **bitmaps;
146 ** one of these for each transaction. The most important part here is the j_realblock.
147 ** this list of cnodes is used to hash all the blocks in all the commits, to mark all the
148 ** real buffer heads dirty once all the commits hit the disk,
149 ** and to make sure every real block in a transaction is on disk before allowing the log area
150 ** to be overwritten */
151 struct reiserfs_journal_list {
152 unsigned long j_start;
153 unsigned long j_state;
155 atomic_t j_nonzerolen;
156 atomic_t j_commit_left;
157 atomic_t j_older_commits_done; /* all commits older than this on disk */
158 struct mutex j_commit_mutex;
159 unsigned int j_trans_id;
161 struct reiserfs_list_bitmap *j_list_bitmap;
162 struct buffer_head *j_commit_bh; /* commit buffer head */
163 struct reiserfs_journal_cnode *j_realblock;
164 struct reiserfs_journal_cnode *j_freedlist; /* list of buffers that were freed during this trans. free each of these on flush */
165 /* time ordered list of all active transactions */
166 struct list_head j_list;
168 /* time ordered list of all transactions we haven't tried to flush yet */
169 struct list_head j_working_list;
171 /* list of tail conversion targets in need of flush before commit */
172 struct list_head j_tail_bh_list;
173 /* list of data=ordered buffers in need of flush before commit */
174 struct list_head j_bh_list;
178 struct reiserfs_journal {
179 struct buffer_head **j_ap_blocks; /* journal blocks on disk */
180 struct reiserfs_journal_cnode *j_last; /* newest journal block */
181 struct reiserfs_journal_cnode *j_first; /* oldest journal block. start here for traverse */
183 struct block_device *j_dev_bd;
185 int j_1st_reserved_block; /* first block on s_dev of reserved area journal */
187 unsigned long j_state;
188 unsigned int j_trans_id;
189 unsigned long j_mount_id;
190 unsigned long j_start; /* start of current waiting commit (index into j_ap_blocks) */
191 unsigned long j_len; /* length of current waiting commit */
192 unsigned long j_len_alloc; /* number of buffers requested by journal_begin() */
193 atomic_t j_wcount; /* count of writers for current commit */
194 unsigned long j_bcount; /* batch count. allows turning X transactions into 1 */
195 unsigned long j_first_unflushed_offset; /* first unflushed transactions offset */
196 unsigned long j_last_flush_trans_id; /* last fully flushed journal timestamp */
197 struct buffer_head *j_header_bh;
199 time_t j_trans_start_time; /* time this transaction started */
200 struct mutex j_mutex;
201 struct mutex j_flush_mutex;
202 wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */
203 atomic_t j_jlock; /* lock for j_join_wait */
204 int j_list_bitmap_index; /* number of next list bitmap to use */
205 int j_must_wait; /* no more journal begins allowed. MUST sleep on j_join_wait */
206 int j_next_full_flush; /* next journal_end will flush all journal list */
207 int j_next_async_flush; /* next journal_end will flush all async commits */
209 int j_cnode_used; /* number of cnodes on the used list */
210 int j_cnode_free; /* number of cnodes on the free list */
212 unsigned int j_trans_max; /* max number of blocks in a transaction. */
213 unsigned int j_max_batch; /* max number of blocks to batch into a trans */
214 unsigned int j_max_commit_age; /* in seconds, how old can an async commit be */
215 unsigned int j_max_trans_age; /* in seconds, how old can a transaction be */
216 unsigned int j_default_max_commit_age; /* the default for the max commit age */
218 struct reiserfs_journal_cnode *j_cnode_free_list;
219 struct reiserfs_journal_cnode *j_cnode_free_orig; /* orig pointer returned from vmalloc */
221 struct reiserfs_journal_list *j_current_jl;
222 int j_free_bitmap_nodes;
223 int j_used_bitmap_nodes;
225 int j_num_lists; /* total number of active transactions */
226 int j_num_work_lists; /* number that need attention from kreiserfsd */
228 /* debugging to make sure things are flushed in order */
229 unsigned int j_last_flush_id;
231 /* debugging to make sure things are committed in order */
232 unsigned int j_last_commit_id;
234 struct list_head j_bitmap_nodes;
235 struct list_head j_dirty_buffers;
236 spinlock_t j_dirty_buffers_lock; /* protects j_dirty_buffers */
238 /* list of all active transactions */
239 struct list_head j_journal_list;
240 /* lists that haven't been touched by writeback attempts */
241 struct list_head j_working_list;
243 struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS]; /* array of bitmaps to record the deleted blocks */
244 struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE]; /* hash table for real buffer heads in current trans */
245 struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE]; /* hash table for all the real buffer heads in all
247 struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */
248 int j_persistent_trans;
249 unsigned long j_max_trans_size;
250 unsigned long j_max_batch_size;
254 /* when flushing ordered buffers, throttle new ordered writers */
255 struct delayed_work j_work;
256 struct super_block *j_work_sb;
257 atomic_t j_async_throttle;
260 enum journal_state_bits {
261 J_WRITERS_BLOCKED = 1, /* set when new writers not allowed */
262 J_WRITERS_QUEUED, /* set when log is full due to too many writers */
263 J_ABORTED, /* set when log is aborted */
266 #define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */
268 typedef __u32(*hashf_t) (const signed char *, int);
270 struct reiserfs_bitmap_info {
274 struct proc_dir_entry;
276 #if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
277 typedef unsigned long int stat_cnt_t;
278 typedef struct reiserfs_proc_info_data {
281 int max_hash_collisions;
284 stat_cnt_t bread_miss;
285 stat_cnt_t search_by_key;
286 stat_cnt_t search_by_key_fs_changed;
287 stat_cnt_t search_by_key_restarted;
289 stat_cnt_t insert_item_restarted;
290 stat_cnt_t paste_into_item_restarted;
291 stat_cnt_t cut_from_item_restarted;
292 stat_cnt_t delete_solid_item_restarted;
293 stat_cnt_t delete_item_restarted;
295 stat_cnt_t leaked_oid;
296 stat_cnt_t leaves_removable;
298 /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
299 stat_cnt_t balance_at[5]; /* XXX */
300 /* sbk == search_by_key */
301 stat_cnt_t sbk_read_at[5]; /* XXX */
302 stat_cnt_t sbk_fs_changed[5];
303 stat_cnt_t sbk_restarted[5];
304 stat_cnt_t items_at[5]; /* XXX */
305 stat_cnt_t free_at[5]; /* XXX */
306 stat_cnt_t can_node_be_removed[5]; /* XXX */
307 long int lnum[5]; /* XXX */
308 long int rnum[5]; /* XXX */
309 long int lbytes[5]; /* XXX */
310 long int rbytes[5]; /* XXX */
311 stat_cnt_t get_neighbors[5];
312 stat_cnt_t get_neighbors_restart[5];
313 stat_cnt_t need_l_neighbor[5];
314 stat_cnt_t need_r_neighbor[5];
316 stat_cnt_t free_block;
317 struct __scan_bitmap_stats {
322 stat_cnt_t in_journal_hint;
323 stat_cnt_t in_journal_nohint;
326 struct __journal_stats {
327 stat_cnt_t in_journal;
328 stat_cnt_t in_journal_bitmap;
329 stat_cnt_t in_journal_reusable;
330 stat_cnt_t lock_journal;
331 stat_cnt_t lock_journal_wait;
332 stat_cnt_t journal_being;
333 stat_cnt_t journal_relock_writers;
334 stat_cnt_t journal_relock_wcount;
335 stat_cnt_t mark_dirty;
336 stat_cnt_t mark_dirty_already;
337 stat_cnt_t mark_dirty_notjournal;
338 stat_cnt_t restore_prepared;
340 stat_cnt_t prepare_retry;
342 } reiserfs_proc_info_data_t;
344 typedef struct reiserfs_proc_info_data {
345 } reiserfs_proc_info_data_t;
348 /* reiserfs union of in-core super block data */
349 struct reiserfs_sb_info {
350 struct buffer_head *s_sbh; /* Buffer containing the super block */
351 /* both the comment and the choice of
352 name are unclear for s_rs -Hans */
353 struct reiserfs_super_block *s_rs; /* Pointer to the super block in the buffer */
354 struct reiserfs_bitmap_info *s_ap_bitmap;
355 struct reiserfs_journal *s_journal; /* pointer to journal information */
356 unsigned short s_mount_state; /* reiserfs state (valid, invalid) */
359 void (*end_io_handler) (struct buffer_head *, int);
360 hashf_t s_hash_function; /* pointer to function which is used
361 to sort names in directory. Set on
363 unsigned long s_mount_opt; /* reiserfs's mount options are set
364 here (currently - NOTAIL, NOLOG,
367 struct { /* This is a structure that describes block allocator options */
368 unsigned long bits; /* Bitfield for enable/disable kind of options */
369 unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */
370 int border; /* percentage of disk, border takes */
371 int preallocmin; /* Minimal file size (in blocks) starting from which we do preallocations */
372 int preallocsize; /* Number of blocks we try to prealloc when file
373 reaches preallocmin size (in blocks) or
374 prealloc_list is empty. */
378 wait_queue_head_t s_wait;
379 /* To be obsoleted soon by per buffer seals.. -Hans */
380 atomic_t s_generation_counter; // increased by one every time the
381 // tree gets re-balanced
382 unsigned long s_properties; /* File system properties. Currently holds
385 /* session statistics */
390 int s_unneeded_left_neighbor;
391 int s_good_search_by_key_reada;
393 int s_bmaps_without_search;
394 int s_direct2indirect;
395 int s_indirect2direct;
396 /* set up when it's ok for reiserfs_read_inode2() to read from
397 disk inode with nlink==0. Currently this is only used during
398 finish_unfinished() processing at mount time */
399 int s_is_unlinked_ok;
400 reiserfs_proc_info_data_t s_proc_info_data;
401 struct proc_dir_entry *procdir;
402 int reserved_blocks; /* amount of blocks reserved for further allocations */
403 spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
404 struct dentry *priv_root; /* root of /.reiserfs_priv */
405 struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
408 char *s_qf_names[MAXQUOTAS];
413 /* Definitions of reiserfs on-disk properties: */
414 #define REISERFS_3_5 0
415 #define REISERFS_3_6 1
416 #define REISERFS_OLD_FORMAT 2
418 enum reiserfs_mount_options {
420 REISERFS_LARGETAIL, /* large tails will be created in a session */
421 REISERFS_SMALLTAIL, /* small (for files less than block size) tails will be created in a session */
422 REPLAYONLY, /* replay journal and return 0. Use by fsck */
423 REISERFS_CONVERT, /* -o conv: causes conversion of old
424 format super block to the new
425 format. If not specified - old
426 partition will be dealt with in a
429 /* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
430 ** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option
431 ** is not required. If the normal autodection code can't determine which
432 ** hash to use (because both hashes had the same value for a file)
433 ** use this option to force a specific hash. It won't allow you to override
434 ** the existing hash on the FS, so if you have a tea hash disk, and mount
435 ** with -o hash=rupasov, the mount will fail.
437 FORCE_TEA_HASH, /* try to force tea hash on mount */
438 FORCE_RUPASOV_HASH, /* try to force rupasov hash on mount */
439 FORCE_R5_HASH, /* try to force rupasov hash on mount */
440 FORCE_HASH_DETECT, /* try to detect hash function on mount */
443 REISERFS_DATA_ORDERED,
444 REISERFS_DATA_WRITEBACK,
446 /* used for testing experimental features, makes benchmarking new
447 features with and without more convenient, should never be used by
448 users in any code shipped to users (ideally) */
451 REISERFS_NO_UNHASHED_RELOCATION,
452 REISERFS_HASHED_RELOCATION,
455 REISERFS_XATTRS_USER,
457 REISERFS_BARRIER_NONE,
458 REISERFS_BARRIER_FLUSH,
460 /* Actions on error */
461 REISERFS_ERROR_PANIC,
463 REISERFS_ERROR_CONTINUE,
465 REISERFS_QUOTA, /* Some quota option specified */
471 REISERFS_UNSUPPORTED_OPT,
474 #define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
475 #define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
476 #define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
477 #define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
478 #define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
479 #define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
480 #define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
481 #define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
483 #define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
484 #define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
485 #define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
486 #define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
487 #define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
488 #define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
489 #define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
490 #define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
491 #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
492 #define reiserfs_xattrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS))
493 #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
494 #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
495 #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
496 #define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
497 #define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
499 #define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC))
500 #define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO))
502 void reiserfs_file_buffer(struct buffer_head *bh, int list);
503 extern struct file_system_type reiserfs_fs_type;
504 int reiserfs_resize(struct super_block *, unsigned long);
507 #define SCHEDULE_OCCURRED 1
509 #define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
510 #define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
511 #define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
512 #define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
513 #define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
515 #define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
517 /* A safe version of the "bdevname", which returns the "s_id" field of
518 * a superblock or else "Null superblock" if the super block is NULL.
520 static inline char *reiserfs_bdevname(struct super_block *s)
522 return (s == NULL) ? "Null superblock" : s->s_id;
525 #define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal)))
526 static inline int __reiserfs_is_journal_aborted(struct reiserfs_journal
529 return test_bit(J_ABORTED, &journal->j_state);
532 #endif /* _LINUX_REISER_FS_SB */