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[linux-2.6.9-moxart.git] / include / linux / reiserfs_fs_sb.h
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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
7 #ifdef __KERNEL__
8 #include <linux/workqueue.h>
9 #include <linux/rwsem.h>
10 #endif
12 typedef enum {
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_reserved_for_journal(sbp) \
77 (le16_to_cpu((sbp)->s_v1.s_reserved_for_journal))
78 #define set_sb_reserved_for_journal(sbp,v) \
79 ((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v))
81 /* LOGGING -- */
83 /* These all interelate for performance.
85 ** If the journal block count is smaller than n transactions, you lose speed.
86 ** I don't know what n is yet, I'm guessing 8-16.
88 ** typical transaction size depends on the application, how often fsync is
89 ** called, and how many metadata blocks you dirty in a 30 second period.
90 ** The more small files (<16k) you use, the larger your transactions will
91 ** be.
92 **
93 ** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal
94 ** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough
95 ** to prevent wrapping before dirty meta blocks get to disk.
97 ** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal
98 ** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping.
100 ** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
104 /* don't mess with these for a while */
105 /* we have a node size define somewhere in reiserfs_fs.h. -Hans */
106 #define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */
107 #define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */
108 #define JOURNAL_HASH_SIZE 8192
109 #define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */
111 /* One of these for every block in every transaction
112 ** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a
113 ** hash of all the in memory transactions.
114 ** next and prev are used by the current transaction (journal_hash).
115 ** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash
116 ** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging
117 ** to a given transaction.
119 struct reiserfs_journal_cnode {
120 struct buffer_head *bh ; /* real buffer head */
121 struct super_block *sb ; /* dev of real buffer head */
122 __u32 blocknr ; /* block number of real buffer head, == 0 when buffer on disk */
123 long state ;
124 struct reiserfs_journal_list *jlist ; /* journal list this cnode lives in */
125 struct reiserfs_journal_cnode *next ; /* next in transaction list */
126 struct reiserfs_journal_cnode *prev ; /* prev in transaction list */
127 struct reiserfs_journal_cnode *hprev ; /* prev in hash list */
128 struct reiserfs_journal_cnode *hnext ; /* next in hash list */
131 struct reiserfs_bitmap_node {
132 int id ;
133 char *data ;
134 struct list_head list ;
137 struct reiserfs_list_bitmap {
138 struct reiserfs_journal_list *journal_list ;
139 struct reiserfs_bitmap_node **bitmaps ;
143 ** one of these for each transaction. The most important part here is the j_realblock.
144 ** this list of cnodes is used to hash all the blocks in all the commits, to mark all the
145 ** real buffer heads dirty once all the commits hit the disk,
146 ** and to make sure every real block in a transaction is on disk before allowing the log area
147 ** to be overwritten */
148 struct reiserfs_journal_list {
149 unsigned long j_start ;
150 unsigned long j_state;
151 unsigned long j_len ;
152 atomic_t j_nonzerolen ;
153 atomic_t j_commit_left ;
154 atomic_t j_older_commits_done ; /* all commits older than this on disk*/
155 struct semaphore j_commit_lock;
156 unsigned long j_trans_id ;
157 time_t j_timestamp ;
158 struct reiserfs_list_bitmap *j_list_bitmap ;
159 struct buffer_head *j_commit_bh ; /* commit buffer head */
160 struct reiserfs_journal_cnode *j_realblock ;
161 struct reiserfs_journal_cnode *j_freedlist ; /* list of buffers that were freed during this trans. free each of these on flush */
162 /* time ordered list of all active transactions */
163 struct list_head j_list;
165 /* time ordered list of all transactions we haven't tried to flush yet */
166 struct list_head j_working_list;
168 /* list of tail conversion targets in need of flush before commit */
169 struct list_head j_tail_bh_list;
170 /* list of data=ordered buffers in need of flush before commit */
171 struct list_head j_bh_list;
172 int j_refcount;
175 struct reiserfs_journal {
176 struct buffer_head ** j_ap_blocks ; /* journal blocks on disk */
177 struct reiserfs_journal_cnode *j_last ; /* newest journal block */
178 struct reiserfs_journal_cnode *j_first ; /* oldest journal block. start here for traverse */
180 struct file *j_dev_file;
181 struct block_device *j_dev_bd;
182 int j_1st_reserved_block; /* first block on s_dev of reserved area journal */
184 long j_state ;
185 unsigned long j_trans_id ;
186 unsigned long j_mount_id ;
187 unsigned long j_start ; /* start of current waiting commit (index into j_ap_blocks) */
188 unsigned long j_len ; /* lenght of current waiting commit */
189 unsigned long j_len_alloc ; /* number of buffers requested by journal_begin() */
190 atomic_t j_wcount ; /* count of writers for current commit */
191 unsigned long j_bcount ; /* batch count. allows turning X transactions into 1 */
192 unsigned long j_first_unflushed_offset ; /* first unflushed transactions offset */
193 unsigned long j_last_flush_trans_id ; /* last fully flushed journal timestamp */
194 struct buffer_head *j_header_bh ;
196 time_t j_trans_start_time ; /* time this transaction started */
197 struct semaphore j_lock;
198 struct semaphore j_flush_sem;
199 wait_queue_head_t j_join_wait ; /* wait for current transaction to finish before starting new one */
200 atomic_t j_jlock ; /* lock for j_join_wait */
201 int j_list_bitmap_index ; /* number of next list bitmap to use */
202 int j_must_wait ; /* no more journal begins allowed. MUST sleep on j_join_wait */
203 int j_next_full_flush ; /* next journal_end will flush all journal list */
204 int j_next_async_flush ; /* next journal_end will flush all async commits */
206 int j_cnode_used ; /* number of cnodes on the used list */
207 int j_cnode_free ; /* number of cnodes on the free list */
209 unsigned int s_journal_trans_max ; /* max number of blocks in a transaction. */
210 unsigned int s_journal_max_batch ; /* max number of blocks to batch into a trans */
211 unsigned int s_journal_max_commit_age ; /* in seconds, how old can an async commit be */
212 unsigned int s_journal_default_max_commit_age ; /* the default for the max commit age */
213 unsigned int s_journal_max_trans_age ; /* in seconds, how old can a transaction be */
215 struct reiserfs_journal_cnode *j_cnode_free_list ;
216 struct reiserfs_journal_cnode *j_cnode_free_orig ; /* orig pointer returned from vmalloc */
218 struct reiserfs_journal_list *j_current_jl;
219 int j_free_bitmap_nodes ;
220 int j_used_bitmap_nodes ;
222 int j_num_lists; /* total number of active transactions */
223 int j_num_work_lists; /* number that need attention from kreiserfsd */
225 /* debugging to make sure things are flushed in order */
226 int j_last_flush_id;
228 /* debugging to make sure things are committed in order */
229 int j_last_commit_id;
231 struct list_head j_bitmap_nodes ;
232 struct list_head j_dirty_buffers ;
233 spinlock_t j_dirty_buffers_lock ; /* protects j_dirty_buffers */
235 /* list of all active transactions */
236 struct list_head j_journal_list;
237 /* lists that haven't been touched by writeback attempts */
238 struct list_head j_working_list;
240 struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS] ; /* array of bitmaps to record the deleted blocks */
241 struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for real buffer heads in current trans */
242 struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for all the real buffer heads in all
243 the transactions */
244 struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */
245 unsigned long j_max_trans_size ;
246 unsigned long j_max_batch_size ;
248 /* when flushing ordered buffers, throttle new ordered writers */
249 struct work_struct j_work;
250 atomic_t j_async_throttle;
253 #define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */
255 typedef __u32 (*hashf_t) (const signed char *, int);
257 struct reiserfs_bitmap_info
259 // FIXME: Won't work with block sizes > 8K
260 __u16 first_zero_hint;
261 __u16 free_count;
262 struct buffer_head *bh; /* the actual bitmap */
265 struct proc_dir_entry;
267 #if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
268 typedef unsigned long int stat_cnt_t;
269 typedef struct reiserfs_proc_info_data
271 spinlock_t lock;
272 int exiting;
273 int max_hash_collisions;
275 stat_cnt_t breads;
276 stat_cnt_t bread_miss;
277 stat_cnt_t search_by_key;
278 stat_cnt_t search_by_key_fs_changed;
279 stat_cnt_t search_by_key_restarted;
281 stat_cnt_t insert_item_restarted;
282 stat_cnt_t paste_into_item_restarted;
283 stat_cnt_t cut_from_item_restarted;
284 stat_cnt_t delete_solid_item_restarted;
285 stat_cnt_t delete_item_restarted;
287 stat_cnt_t leaked_oid;
288 stat_cnt_t leaves_removable;
290 /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
291 stat_cnt_t balance_at[ 5 ]; /* XXX */
292 /* sbk == search_by_key */
293 stat_cnt_t sbk_read_at[ 5 ]; /* XXX */
294 stat_cnt_t sbk_fs_changed[ 5 ];
295 stat_cnt_t sbk_restarted[ 5 ];
296 stat_cnt_t items_at[ 5 ]; /* XXX */
297 stat_cnt_t free_at[ 5 ]; /* XXX */
298 stat_cnt_t can_node_be_removed[ 5 ]; /* XXX */
299 long int lnum[ 5 ]; /* XXX */
300 long int rnum[ 5 ]; /* XXX */
301 long int lbytes[ 5 ]; /* XXX */
302 long int rbytes[ 5 ]; /* XXX */
303 stat_cnt_t get_neighbors[ 5 ];
304 stat_cnt_t get_neighbors_restart[ 5 ];
305 stat_cnt_t need_l_neighbor[ 5 ];
306 stat_cnt_t need_r_neighbor[ 5 ];
308 stat_cnt_t free_block;
309 struct __scan_bitmap_stats {
310 stat_cnt_t call;
311 stat_cnt_t wait;
312 stat_cnt_t bmap;
313 stat_cnt_t retry;
314 stat_cnt_t in_journal_hint;
315 stat_cnt_t in_journal_nohint;
316 stat_cnt_t stolen;
317 } scan_bitmap;
318 struct __journal_stats {
319 stat_cnt_t in_journal;
320 stat_cnt_t in_journal_bitmap;
321 stat_cnt_t in_journal_reusable;
322 stat_cnt_t lock_journal;
323 stat_cnt_t lock_journal_wait;
324 stat_cnt_t journal_being;
325 stat_cnt_t journal_relock_writers;
326 stat_cnt_t journal_relock_wcount;
327 stat_cnt_t mark_dirty;
328 stat_cnt_t mark_dirty_already;
329 stat_cnt_t mark_dirty_notjournal;
330 stat_cnt_t restore_prepared;
331 stat_cnt_t prepare;
332 stat_cnt_t prepare_retry;
333 } journal;
334 } reiserfs_proc_info_data_t;
335 #else
336 typedef struct reiserfs_proc_info_data
337 {} reiserfs_proc_info_data_t;
338 #endif
340 /* reiserfs union of in-core super block data */
341 struct reiserfs_sb_info
343 struct buffer_head * s_sbh; /* Buffer containing the super block */
344 /* both the comment and the choice of
345 name are unclear for s_rs -Hans */
346 struct reiserfs_super_block * s_rs; /* Pointer to the super block in the buffer */
347 struct reiserfs_bitmap_info * s_ap_bitmap;
348 struct reiserfs_journal *s_journal ; /* pointer to journal information */
349 unsigned short s_mount_state; /* reiserfs state (valid, invalid) */
351 /* Comment? -Hans */
352 void (*end_io_handler)(struct buffer_head *, int);
353 hashf_t s_hash_function; /* pointer to function which is used
354 to sort names in directory. Set on
355 mount */
356 unsigned long s_mount_opt; /* reiserfs's mount options are set
357 here (currently - NOTAIL, NOLOG,
358 REPLAYONLY) */
360 struct { /* This is a structure that describes block allocator options */
361 unsigned long bits; /* Bitfield for enable/disable kind of options */
362 unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */
363 int border; /* percentage of disk, border takes */
364 int preallocmin; /* Minimal file size (in blocks) starting from which we do preallocations */
365 int preallocsize; /* Number of blocks we try to prealloc when file
366 reaches preallocmin size (in blocks) or
367 prealloc_list is empty. */
368 } s_alloc_options;
370 /* Comment? -Hans */
371 wait_queue_head_t s_wait;
372 /* To be obsoleted soon by per buffer seals.. -Hans */
373 atomic_t s_generation_counter; // increased by one every time the
374 // tree gets re-balanced
375 unsigned long s_properties; /* File system properties. Currently holds
376 on-disk FS format */
378 /* session statistics */
379 int s_kmallocs;
380 int s_disk_reads;
381 int s_disk_writes;
382 int s_fix_nodes;
383 int s_do_balance;
384 int s_unneeded_left_neighbor;
385 int s_good_search_by_key_reada;
386 int s_bmaps;
387 int s_bmaps_without_search;
388 int s_direct2indirect;
389 int s_indirect2direct;
390 /* set up when it's ok for reiserfs_read_inode2() to read from
391 disk inode with nlink==0. Currently this is only used during
392 finish_unfinished() processing at mount time */
393 int s_is_unlinked_ok;
394 reiserfs_proc_info_data_t s_proc_info_data;
395 struct proc_dir_entry *procdir;
396 int reserved_blocks; /* amount of blocks reserved for further allocations */
397 spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
398 struct dentry *priv_root; /* root of /.reiserfs_priv */
399 struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
400 struct rw_semaphore xattr_dir_sem;
404 /* Definitions of reiserfs on-disk properties: */
405 #define REISERFS_3_5 0
406 #define REISERFS_3_6 1
408 enum reiserfs_mount_options {
409 /* Mount options */
410 REISERFS_LARGETAIL, /* large tails will be created in a session */
411 REISERFS_SMALLTAIL, /* small (for files less than block size) tails will be created in a session */
412 REPLAYONLY, /* replay journal and return 0. Use by fsck */
413 REISERFS_CONVERT, /* -o conv: causes conversion of old
414 format super block to the new
415 format. If not specified - old
416 partition will be dealt with in a
417 manner of 3.5.x */
419 /* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
420 ** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option
421 ** is not required. If the normal autodection code can't determine which
422 ** hash to use (because both hases had the same value for a file)
423 ** use this option to force a specific hash. It won't allow you to override
424 ** the existing hash on the FS, so if you have a tea hash disk, and mount
425 ** with -o hash=rupasov, the mount will fail.
427 FORCE_TEA_HASH, /* try to force tea hash on mount */
428 FORCE_RUPASOV_HASH, /* try to force rupasov hash on mount */
429 FORCE_R5_HASH, /* try to force rupasov hash on mount */
430 FORCE_HASH_DETECT, /* try to detect hash function on mount */
432 REISERFS_DATA_LOG,
433 REISERFS_DATA_ORDERED,
434 REISERFS_DATA_WRITEBACK,
436 /* used for testing experimental features, makes benchmarking new
437 features with and without more convenient, should never be used by
438 users in any code shipped to users (ideally) */
440 REISERFS_NO_BORDER,
441 REISERFS_NO_UNHASHED_RELOCATION,
442 REISERFS_HASHED_RELOCATION,
443 REISERFS_ATTRS,
444 REISERFS_XATTRS,
445 REISERFS_XATTRS_USER,
446 REISERFS_POSIXACL,
447 REISERFS_BARRIER_NONE,
448 REISERFS_BARRIER_FLUSH,
450 REISERFS_TEST1,
451 REISERFS_TEST2,
452 REISERFS_TEST3,
453 REISERFS_TEST4,
456 #define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
457 #define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
458 #define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
459 #define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
460 #define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
461 #define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
462 #define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
463 #define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
465 #define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
466 #define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
467 #define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
468 #define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
469 #define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
470 #define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
471 #define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
472 #define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
473 #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
474 #define reiserfs_xattrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS))
475 #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
476 #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
477 #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
478 #define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
479 #define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
481 void reiserfs_file_buffer (struct buffer_head * bh, int list);
482 extern struct file_system_type reiserfs_fs_type;
483 int reiserfs_resize(struct super_block *, unsigned long) ;
485 #define CARRY_ON 0
486 #define SCHEDULE_OCCURRED 1
489 #define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
490 #define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
491 #define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
492 #define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
493 #define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
495 #define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
497 #define SB_JOURNAL_TRANS_MAX(s) (SB_JOURNAL(s)->s_journal_trans_max)
498 #define SB_JOURNAL_MAX_BATCH(s) (SB_JOURNAL(s)->s_journal_max_batch)
499 #define SB_JOURNAL_MAX_COMMIT_AGE(s) (SB_JOURNAL(s)->s_journal_max_commit_age)
500 #define SB_JOURNAL_DEFAULT_MAX_COMMIT_AGE(s) (SB_JOURNAL(s)->s_journal_default_max_commit_age)
501 #define SB_JOURNAL_MAX_TRANS_AGE(s) (SB_JOURNAL(s)->s_journal_max_trans_age)
503 /* A safe version of the "bdevname", which returns the "s_id" field of
504 * a superblock or else "Null superblock" if the super block is NULL.
506 static inline char *reiserfs_bdevname(struct super_block *s)
508 return (s == NULL) ? "Null superblock" : s -> s_id;
511 #endif /* _LINUX_REISER_FS_SB */