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1/* Copyright 1996-2000 Hans Reiser, see reiserfs/README for licensing
2 * and copyright details */
3
4#ifndef _LINUX_REISER_FS_SB
5#define _LINUX_REISER_FS_SB
6
7#ifdef __KERNEL__
8#include <linux/workqueue.h>
9#include <linux/rwsem.h>
10#include <linux/mutex.h>
11#include <linux/sched.h>
12#endif
13
14typedef enum {
15 reiserfs_attrs_cleared = 0x00000001,
16} reiserfs_super_block_flags;
17
18/* struct reiserfs_super_block accessors/mutators
19 * since this is a disk structure, it will always be in
20 * little endian format. */
21#define sb_block_count(sbp) (le32_to_cpu((sbp)->s_v1.s_block_count))
22#define set_sb_block_count(sbp,v) ((sbp)->s_v1.s_block_count = cpu_to_le32(v))
23#define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_v1.s_free_blocks))
24#define set_sb_free_blocks(sbp,v) ((sbp)->s_v1.s_free_blocks = cpu_to_le32(v))
25#define sb_root_block(sbp) (le32_to_cpu((sbp)->s_v1.s_root_block))
26#define set_sb_root_block(sbp,v) ((sbp)->s_v1.s_root_block = cpu_to_le32(v))
27
28#define sb_jp_journal_1st_block(sbp) \
29 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_1st_block))
30#define set_sb_jp_journal_1st_block(sbp,v) \
31 ((sbp)->s_v1.s_journal.jp_journal_1st_block = cpu_to_le32(v))
32#define sb_jp_journal_dev(sbp) \
33 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_dev))
34#define set_sb_jp_journal_dev(sbp,v) \
35 ((sbp)->s_v1.s_journal.jp_journal_dev = cpu_to_le32(v))
36#define sb_jp_journal_size(sbp) \
37 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_size))
38#define set_sb_jp_journal_size(sbp,v) \
39 ((sbp)->s_v1.s_journal.jp_journal_size = cpu_to_le32(v))
40#define sb_jp_journal_trans_max(sbp) \
41 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_trans_max))
42#define set_sb_jp_journal_trans_max(sbp,v) \
43 ((sbp)->s_v1.s_journal.jp_journal_trans_max = cpu_to_le32(v))
44#define sb_jp_journal_magic(sbp) \
45 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_magic))
46#define set_sb_jp_journal_magic(sbp,v) \
47 ((sbp)->s_v1.s_journal.jp_journal_magic = cpu_to_le32(v))
48#define sb_jp_journal_max_batch(sbp) \
49 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_batch))
50#define set_sb_jp_journal_max_batch(sbp,v) \
51 ((sbp)->s_v1.s_journal.jp_journal_max_batch = cpu_to_le32(v))
52#define sb_jp_jourmal_max_commit_age(sbp) \
53 (le32_to_cpu((sbp)->s_v1.s_journal.jp_journal_max_commit_age))
54#define set_sb_jp_journal_max_commit_age(sbp,v) \
55 ((sbp)->s_v1.s_journal.jp_journal_max_commit_age = cpu_to_le32(v))
56
57#define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_v1.s_blocksize))
58#define set_sb_blocksize(sbp,v) ((sbp)->s_v1.s_blocksize = cpu_to_le16(v))
59#define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_maxsize))
60#define set_sb_oid_maxsize(sbp,v) ((sbp)->s_v1.s_oid_maxsize = cpu_to_le16(v))
61#define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_v1.s_oid_cursize))
62#define set_sb_oid_cursize(sbp,v) ((sbp)->s_v1.s_oid_cursize = cpu_to_le16(v))
63#define sb_umount_state(sbp) (le16_to_cpu((sbp)->s_v1.s_umount_state))
64#define set_sb_umount_state(sbp,v) ((sbp)->s_v1.s_umount_state = cpu_to_le16(v))
65#define sb_fs_state(sbp) (le16_to_cpu((sbp)->s_v1.s_fs_state))
66#define set_sb_fs_state(sbp,v) ((sbp)->s_v1.s_fs_state = cpu_to_le16(v))
67#define sb_hash_function_code(sbp) \
68 (le32_to_cpu((sbp)->s_v1.s_hash_function_code))
69#define set_sb_hash_function_code(sbp,v) \
70 ((sbp)->s_v1.s_hash_function_code = cpu_to_le32(v))
71#define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_v1.s_tree_height))
72#define set_sb_tree_height(sbp,v) ((sbp)->s_v1.s_tree_height = cpu_to_le16(v))
73#define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_v1.s_bmap_nr))
74#define set_sb_bmap_nr(sbp,v) ((sbp)->s_v1.s_bmap_nr = cpu_to_le16(v))
75#define sb_version(sbp) (le16_to_cpu((sbp)->s_v1.s_version))
76#define set_sb_version(sbp,v) ((sbp)->s_v1.s_version = cpu_to_le16(v))
77
78#define sb_mnt_count(sbp) (le16_to_cpu((sbp)->s_mnt_count))
79#define set_sb_mnt_count(sbp, v) ((sbp)->s_mnt_count = cpu_to_le16(v))
80
81#define sb_reserved_for_journal(sbp) \
82 (le16_to_cpu((sbp)->s_v1.s_reserved_for_journal))
83#define set_sb_reserved_for_journal(sbp,v) \
84 ((sbp)->s_v1.s_reserved_for_journal = cpu_to_le16(v))
85
86/* LOGGING -- */
87
88/* These all interelate for performance.
89**
90** If the journal block count is smaller than n transactions, you lose speed.
91** I don't know what n is yet, I'm guessing 8-16.
92**
93** typical transaction size depends on the application, how often fsync is
94** called, and how many metadata blocks you dirty in a 30 second period.
95** The more small files (<16k) you use, the larger your transactions will
96** be.
97**
98** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal
99** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough
100** to prevent wrapping before dirty meta blocks get to disk.
101**
102** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal
103** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping.
104**
105** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
106**
107*/
108
109/* don't mess with these for a while */
110 /* we have a node size define somewhere in reiserfs_fs.h. -Hans */
111#define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */
112#define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */
113#define JOURNAL_HASH_SIZE 8192
114#define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */
115
116/* One of these for every block in every transaction
117** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a
118** hash of all the in memory transactions.
119** next and prev are used by the current transaction (journal_hash).
120** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash
121** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging
122** to a given transaction.
123*/
124struct reiserfs_journal_cnode {
125 struct buffer_head *bh; /* real buffer head */
126 struct super_block *sb; /* dev of real buffer head */
127 __u32 blocknr; /* block number of real buffer head, == 0 when buffer on disk */
128 unsigned long state;
129 struct reiserfs_journal_list *jlist; /* journal list this cnode lives in */
130 struct reiserfs_journal_cnode *next; /* next in transaction list */
131 struct reiserfs_journal_cnode *prev; /* prev in transaction list */
132 struct reiserfs_journal_cnode *hprev; /* prev in hash list */
133 struct reiserfs_journal_cnode *hnext; /* next in hash list */
134};
135
136struct reiserfs_bitmap_node {
137 int id;
138 char *data;
139 struct list_head list;
140};
141
142struct reiserfs_list_bitmap {
143 struct reiserfs_journal_list *journal_list;
144 struct reiserfs_bitmap_node **bitmaps;
145};
146
147/*
148** one of these for each transaction. The most important part here is the j_realblock.
149** this list of cnodes is used to hash all the blocks in all the commits, to mark all the
150** real buffer heads dirty once all the commits hit the disk,
151** and to make sure every real block in a transaction is on disk before allowing the log area
152** to be overwritten */
153struct reiserfs_journal_list {
154 unsigned long j_start;
155 unsigned long j_state;
156 unsigned long j_len;
157 atomic_t j_nonzerolen;
158 atomic_t j_commit_left;
159 atomic_t j_older_commits_done; /* all commits older than this on disk */
160 struct mutex j_commit_mutex;
161 unsigned int j_trans_id;
162 time_t j_timestamp;
163 struct reiserfs_list_bitmap *j_list_bitmap;
164 struct buffer_head *j_commit_bh; /* commit buffer head */
165 struct reiserfs_journal_cnode *j_realblock;
166 struct reiserfs_journal_cnode *j_freedlist; /* list of buffers that were freed during this trans. free each of these on flush */
167 /* time ordered list of all active transactions */
168 struct list_head j_list;
169
170 /* time ordered list of all transactions we haven't tried to flush yet */
171 struct list_head j_working_list;
172
173 /* list of tail conversion targets in need of flush before commit */
174 struct list_head j_tail_bh_list;
175 /* list of data=ordered buffers in need of flush before commit */
176 struct list_head j_bh_list;
177 int j_refcount;
178};
179
180struct reiserfs_journal {
181 struct buffer_head **j_ap_blocks; /* journal blocks on disk */
182 struct reiserfs_journal_cnode *j_last; /* newest journal block */
183 struct reiserfs_journal_cnode *j_first; /* oldest journal block. start here for traverse */
184
185 struct block_device *j_dev_bd;
186 fmode_t j_dev_mode;
187 int j_1st_reserved_block; /* first block on s_dev of reserved area journal */
188
189 unsigned long j_state;
190 unsigned int j_trans_id;
191 unsigned long j_mount_id;
192 unsigned long j_start; /* start of current waiting commit (index into j_ap_blocks) */
193 unsigned long j_len; /* length of current waiting commit */
194 unsigned long j_len_alloc; /* number of buffers requested by journal_begin() */
195 atomic_t j_wcount; /* count of writers for current commit */
196 unsigned long j_bcount; /* batch count. allows turning X transactions into 1 */
197 unsigned long j_first_unflushed_offset; /* first unflushed transactions offset */
198 unsigned j_last_flush_trans_id; /* last fully flushed journal timestamp */
199 struct buffer_head *j_header_bh;
200
201 time_t j_trans_start_time; /* time this transaction started */
202 struct mutex j_mutex;
203 struct mutex j_flush_mutex;
204 wait_queue_head_t j_join_wait; /* wait for current transaction to finish before starting new one */
205 atomic_t j_jlock; /* lock for j_join_wait */
206 int j_list_bitmap_index; /* number of next list bitmap to use */
207 int j_must_wait; /* no more journal begins allowed. MUST sleep on j_join_wait */
208 int j_next_full_flush; /* next journal_end will flush all journal list */
209 int j_next_async_flush; /* next journal_end will flush all async commits */
210
211 int j_cnode_used; /* number of cnodes on the used list */
212 int j_cnode_free; /* number of cnodes on the free list */
213
214 unsigned int j_trans_max; /* max number of blocks in a transaction. */
215 unsigned int j_max_batch; /* max number of blocks to batch into a trans */
216 unsigned int j_max_commit_age; /* in seconds, how old can an async commit be */
217 unsigned int j_max_trans_age; /* in seconds, how old can a transaction be */
218 unsigned int j_default_max_commit_age; /* the default for the max commit age */
219
220 struct reiserfs_journal_cnode *j_cnode_free_list;
221 struct reiserfs_journal_cnode *j_cnode_free_orig; /* orig pointer returned from vmalloc */
222
223 struct reiserfs_journal_list *j_current_jl;
224 int j_free_bitmap_nodes;
225 int j_used_bitmap_nodes;
226
227 int j_num_lists; /* total number of active transactions */
228 int j_num_work_lists; /* number that need attention from kreiserfsd */
229
230 /* debugging to make sure things are flushed in order */
231 unsigned int j_last_flush_id;
232
233 /* debugging to make sure things are committed in order */
234 unsigned int j_last_commit_id;
235
236 struct list_head j_bitmap_nodes;
237 struct list_head j_dirty_buffers;
238 spinlock_t j_dirty_buffers_lock; /* protects j_dirty_buffers */
239
240 /* list of all active transactions */
241 struct list_head j_journal_list;
242 /* lists that haven't been touched by writeback attempts */
243 struct list_head j_working_list;
244
245 struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS]; /* array of bitmaps to record the deleted blocks */
246 struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE]; /* hash table for real buffer heads in current trans */
247 struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE]; /* hash table for all the real buffer heads in all
248 the transactions */
249 struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */
250 int j_persistent_trans;
251 unsigned long j_max_trans_size;
252 unsigned long j_max_batch_size;
253
254 int j_errno;
255
256 /* when flushing ordered buffers, throttle new ordered writers */
257 struct delayed_work j_work;
258 struct super_block *j_work_sb;
259 atomic_t j_async_throttle;
260};
261
262enum journal_state_bits {
263 J_WRITERS_BLOCKED = 1, /* set when new writers not allowed */
264 J_WRITERS_QUEUED, /* set when log is full due to too many writers */
265 J_ABORTED, /* set when log is aborted */
266};
267
268#define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */
269
270typedef __u32(*hashf_t) (const signed char *, int);
271
272struct reiserfs_bitmap_info {
273 __u32 free_count;
274};
275
276struct proc_dir_entry;
277
278#if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
279typedef unsigned long int stat_cnt_t;
280typedef struct reiserfs_proc_info_data {
281 spinlock_t lock;
282 int exiting;
283 int max_hash_collisions;
284
285 stat_cnt_t breads;
286 stat_cnt_t bread_miss;
287 stat_cnt_t search_by_key;
288 stat_cnt_t search_by_key_fs_changed;
289 stat_cnt_t search_by_key_restarted;
290
291 stat_cnt_t insert_item_restarted;
292 stat_cnt_t paste_into_item_restarted;
293 stat_cnt_t cut_from_item_restarted;
294 stat_cnt_t delete_solid_item_restarted;
295 stat_cnt_t delete_item_restarted;
296
297 stat_cnt_t leaked_oid;
298 stat_cnt_t leaves_removable;
299
300 /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
301 stat_cnt_t balance_at[5]; /* XXX */
302 /* sbk == search_by_key */
303 stat_cnt_t sbk_read_at[5]; /* XXX */
304 stat_cnt_t sbk_fs_changed[5];
305 stat_cnt_t sbk_restarted[5];
306 stat_cnt_t items_at[5]; /* XXX */
307 stat_cnt_t free_at[5]; /* XXX */
308 stat_cnt_t can_node_be_removed[5]; /* XXX */
309 long int lnum[5]; /* XXX */
310 long int rnum[5]; /* XXX */
311 long int lbytes[5]; /* XXX */
312 long int rbytes[5]; /* XXX */
313 stat_cnt_t get_neighbors[5];
314 stat_cnt_t get_neighbors_restart[5];
315 stat_cnt_t need_l_neighbor[5];
316 stat_cnt_t need_r_neighbor[5];
317
318 stat_cnt_t free_block;
319 struct __scan_bitmap_stats {
320 stat_cnt_t call;
321 stat_cnt_t wait;
322 stat_cnt_t bmap;
323 stat_cnt_t retry;
324 stat_cnt_t in_journal_hint;
325 stat_cnt_t in_journal_nohint;
326 stat_cnt_t stolen;
327 } scan_bitmap;
328 struct __journal_stats {
329 stat_cnt_t in_journal;
330 stat_cnt_t in_journal_bitmap;
331 stat_cnt_t in_journal_reusable;
332 stat_cnt_t lock_journal;
333 stat_cnt_t lock_journal_wait;
334 stat_cnt_t journal_being;
335 stat_cnt_t journal_relock_writers;
336 stat_cnt_t journal_relock_wcount;
337 stat_cnt_t mark_dirty;
338 stat_cnt_t mark_dirty_already;
339 stat_cnt_t mark_dirty_notjournal;
340 stat_cnt_t restore_prepared;
341 stat_cnt_t prepare;
342 stat_cnt_t prepare_retry;
343 } journal;
344} reiserfs_proc_info_data_t;
345#else
346typedef struct reiserfs_proc_info_data {
347} reiserfs_proc_info_data_t;
348#endif
349
350/* reiserfs union of in-core super block data */
351struct reiserfs_sb_info {
352 struct buffer_head *s_sbh; /* Buffer containing the super block */
353 /* both the comment and the choice of
354 name are unclear for s_rs -Hans */
355 struct reiserfs_super_block *s_rs; /* Pointer to the super block in the buffer */
356 struct reiserfs_bitmap_info *s_ap_bitmap;
357 struct reiserfs_journal *s_journal; /* pointer to journal information */
358 unsigned short s_mount_state; /* reiserfs state (valid, invalid) */
359
360 /* Serialize writers access, replace the old bkl */
361 struct mutex lock;
362 /* Owner of the lock (can be recursive) */
363 struct task_struct *lock_owner;
364 /* Depth of the lock, start from -1 like the bkl */
365 int lock_depth;
366
367 /* Comment? -Hans */
368 void (*end_io_handler) (struct buffer_head *, int);
369 hashf_t s_hash_function; /* pointer to function which is used
370 to sort names in directory. Set on
371 mount */
372 unsigned long s_mount_opt; /* reiserfs's mount options are set
373 here (currently - NOTAIL, NOLOG,
374 REPLAYONLY) */
375
376 struct { /* This is a structure that describes block allocator options */
377 unsigned long bits; /* Bitfield for enable/disable kind of options */
378 unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */
379 int border; /* percentage of disk, border takes */
380 int preallocmin; /* Minimal file size (in blocks) starting from which we do preallocations */
381 int preallocsize; /* Number of blocks we try to prealloc when file
382 reaches preallocmin size (in blocks) or
383 prealloc_list is empty. */
384 } s_alloc_options;
385
386 /* Comment? -Hans */
387 wait_queue_head_t s_wait;
388 /* To be obsoleted soon by per buffer seals.. -Hans */
389 atomic_t s_generation_counter; // increased by one every time the
390 // tree gets re-balanced
391 unsigned long s_properties; /* File system properties. Currently holds
392 on-disk FS format */
393
394 /* session statistics */
395 int s_disk_reads;
396 int s_disk_writes;
397 int s_fix_nodes;
398 int s_do_balance;
399 int s_unneeded_left_neighbor;
400 int s_good_search_by_key_reada;
401 int s_bmaps;
402 int s_bmaps_without_search;
403 int s_direct2indirect;
404 int s_indirect2direct;
405 /* set up when it's ok for reiserfs_read_inode2() to read from
406 disk inode with nlink==0. Currently this is only used during
407 finish_unfinished() processing at mount time */
408 int s_is_unlinked_ok;
409 reiserfs_proc_info_data_t s_proc_info_data;
410 struct proc_dir_entry *procdir;
411 int reserved_blocks; /* amount of blocks reserved for further allocations */
412 spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
413 struct dentry *priv_root; /* root of /.reiserfs_priv */
414 struct dentry *xattr_root; /* root of /.reiserfs_priv/xattrs */
415 int j_errno;
416#ifdef CONFIG_QUOTA
417 char *s_qf_names[MAXQUOTAS];
418 int s_jquota_fmt;
419#endif
420#ifdef CONFIG_REISERFS_CHECK
421
422 struct tree_balance *cur_tb; /*
423 * Detects whether more than one
424 * copy of tb exists per superblock
425 * as a means of checking whether
426 * do_balance is executing concurrently
427 * against another tree reader/writer
428 * on a same mount point.
429 */
430#endif
431};
432
433/* Definitions of reiserfs on-disk properties: */
434#define REISERFS_3_5 0
435#define REISERFS_3_6 1
436#define REISERFS_OLD_FORMAT 2
437
438enum reiserfs_mount_options {
439/* Mount options */
440 REISERFS_LARGETAIL, /* large tails will be created in a session */
441 REISERFS_SMALLTAIL, /* small (for files less than block size) tails will be created in a session */
442 REPLAYONLY, /* replay journal and return 0. Use by fsck */
443 REISERFS_CONVERT, /* -o conv: causes conversion of old
444 format super block to the new
445 format. If not specified - old
446 partition will be dealt with in a
447 manner of 3.5.x */
448
449/* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
450** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option
451** is not required. If the normal autodection code can't determine which
452** hash to use (because both hashes had the same value for a file)
453** use this option to force a specific hash. It won't allow you to override
454** the existing hash on the FS, so if you have a tea hash disk, and mount
455** with -o hash=rupasov, the mount will fail.
456*/
457 FORCE_TEA_HASH, /* try to force tea hash on mount */
458 FORCE_RUPASOV_HASH, /* try to force rupasov hash on mount */
459 FORCE_R5_HASH, /* try to force rupasov hash on mount */
460 FORCE_HASH_DETECT, /* try to detect hash function on mount */
461
462 REISERFS_DATA_LOG,
463 REISERFS_DATA_ORDERED,
464 REISERFS_DATA_WRITEBACK,
465
466/* used for testing experimental features, makes benchmarking new
467 features with and without more convenient, should never be used by
468 users in any code shipped to users (ideally) */
469
470 REISERFS_NO_BORDER,
471 REISERFS_NO_UNHASHED_RELOCATION,
472 REISERFS_HASHED_RELOCATION,
473 REISERFS_ATTRS,
474 REISERFS_XATTRS_USER,
475 REISERFS_POSIXACL,
476 REISERFS_EXPOSE_PRIVROOT,
477 REISERFS_BARRIER_NONE,
478 REISERFS_BARRIER_FLUSH,
479
480 /* Actions on error */
481 REISERFS_ERROR_PANIC,
482 REISERFS_ERROR_RO,
483 REISERFS_ERROR_CONTINUE,
484
485 REISERFS_QUOTA, /* Some quota option specified */
486
487 REISERFS_TEST1,
488 REISERFS_TEST2,
489 REISERFS_TEST3,
490 REISERFS_TEST4,
491 REISERFS_UNSUPPORTED_OPT,
492};
493
494#define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
495#define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
496#define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
497#define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
498#define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
499#define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
500#define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
501#define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
502
503#define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
504#define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
505#define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
506#define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
507#define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
508#define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
509#define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
510#define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
511#define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
512#define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
513#define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
514#define reiserfs_expose_privroot(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_EXPOSE_PRIVROOT))
515#define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
516#define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
517#define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
518
519#define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC))
520#define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO))
521
522void reiserfs_file_buffer(struct buffer_head *bh, int list);
523extern struct file_system_type reiserfs_fs_type;
524int reiserfs_resize(struct super_block *, unsigned long);
525
526#define CARRY_ON 0
527#define SCHEDULE_OCCURRED 1
528
529#define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
530#define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
531#define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
532#define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
533#define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
534
535#define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
536
537/* A safe version of the "bdevname", which returns the "s_id" field of
538 * a superblock or else "Null superblock" if the super block is NULL.
539 */
540static inline char *reiserfs_bdevname(struct super_block *s)
541{
542 return (s == NULL) ? "Null superblock" : s->s_id;
543}
544
545#define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal)))
546static inline int __reiserfs_is_journal_aborted(struct reiserfs_journal
547 *journal)
548{
549 return test_bit(J_ABORTED, &journal->j_state);
550}
551
552#endif /* _LINUX_REISER_FS_SB */