include/linux/reiserfs_fs_sb.h

   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 #endif
  11
  12 typedef enum {
  13   reiserfs_attrs_cleared        = 0x00000001,
  14 } reiserfs_super_block_flags;
  15
  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))
  25
  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))
  54
  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))
  75
  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))
  80
  81 /* LOGGING -- */
  82
  83 /* These all interelate for performance.
  84 **
  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.
  87 **
  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.
  96 **
  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.
  99 **
 100 ** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
 101 **
 102 */
 103
 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 */
 110
 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.
 118 */
 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 */
 129 };
 130
 131 struct reiserfs_bitmap_node {
 132   int id ;
 133   char *data ;
 134   struct list_head list ;
 135 } ;
 136
 137 struct reiserfs_list_bitmap {
 138   struct reiserfs_journal_list *journal_list ;
 139   struct reiserfs_bitmap_node **bitmaps ;
 140 } ;
 141
 142 /*
 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;
 164
 165   /* time ordered list of all transactions we haven't tried to flush yet */
 166   struct list_head j_working_list;
 167
 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;
 173 } ;
 174
 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 */
 179
 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 */
 183
 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 ;
 195
 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 */
 205
 206   int j_cnode_used ;          /* number of cnodes on the used list */
 207   int j_cnode_free ;          /* number of cnodes on the free list */
 208
 209   unsigned int j_trans_max ;           /* max number of blocks in a transaction.  */
 210   unsigned int j_max_batch ;           /* max number of blocks to batch into a trans */
 211   unsigned int j_max_commit_age ;      /* in seconds, how old can an async commit be */
 212   unsigned int j_max_trans_age ;       /* in seconds, how old can a transaction be */
 213   unsigned int j_default_max_commit_age ; /* the default for the max commit age */
 214
 215   struct reiserfs_journal_cnode *j_cnode_free_list ;
 216   struct reiserfs_journal_cnode *j_cnode_free_orig ; /* orig pointer returned from vmalloc */
 217
 218   struct reiserfs_journal_list *j_current_jl;
 219   int j_free_bitmap_nodes ;
 220   int j_used_bitmap_nodes ;
 221
 222   int j_num_lists;      /* total number of active transactions */
 223   int j_num_work_lists; /* number that need attention from kreiserfsd */
 224
 225   /* debugging to make sure things are flushed in order */
 226   int j_last_flush_id;
 227
 228   /* debugging to make sure things are committed in order */
 229   int j_last_commit_id;
 230
 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 */
 234
 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;
 239
 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   int j_persistent_trans;
 246   unsigned long j_max_trans_size ;
 247   unsigned long j_max_batch_size ;
 248
 249   int j_errno;
 250
 251   /* when flushing ordered buffers, throttle new ordered writers */
 252   struct work_struct j_work;
 253   atomic_t j_async_throttle;
 254 };
 255
 256 enum journal_state_bits {
 257     J_WRITERS_BLOCKED = 1,   /* set when new writers not allowed */
 258     J_WRITERS_QUEUED,        /* set when log is full due to too many writers */
 259     J_ABORTED,               /* set when log is aborted */
 260 };
 261
 262
 263 #define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick.  magic string to find desc blocks in the journal */
 264
 265 typedef __u32 (*hashf_t) (const signed char *, int);
 266
 267 struct reiserfs_bitmap_info
 268 {
 269     // FIXME: Won't work with block sizes > 8K
 270     __u16  first_zero_hint;
 271     __u16  free_count;
 272     struct buffer_head *bh; /* the actual bitmap */
 273 };
 274
 275 struct proc_dir_entry;
 276
 277 #if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
 278 typedef unsigned long int stat_cnt_t;
 279 typedef struct reiserfs_proc_info_data
 280 {
 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
 346 typedef struct reiserfs_proc_info_data
 347 {} reiserfs_proc_info_data_t;
 348 #endif
 349
 350 /* reiserfs union of in-core super block data */
 351 struct reiserfs_sb_info
 352 {
 353     struct buffer_head * s_sbh;                   /* Buffer containing the super block */
 354                                 /* both the comment and the choice of
 355                                    name are unclear for s_rs -Hans */
 356     struct reiserfs_super_block * s_rs;           /* Pointer to the super block in the buffer */
 357     struct reiserfs_bitmap_info * s_ap_bitmap;
 358     struct reiserfs_journal *s_journal ;                /* pointer to journal information */
 359     unsigned short s_mount_state;                 /* reiserfs state (valid, invalid) */
 360
 361                                 /* Comment? -Hans */
 362     void (*end_io_handler)(struct buffer_head *, int);
 363     hashf_t s_hash_function;    /* pointer to function which is used
 364                                    to sort names in directory. Set on
 365                                    mount */
 366     unsigned long s_mount_opt;  /* reiserfs's mount options are set
 367                                    here (currently - NOTAIL, NOLOG,
 368                                    REPLAYONLY) */
 369
 370     struct {                    /* This is a structure that describes block allocator options */
 371         unsigned long bits;     /* Bitfield for enable/disable kind of options */
 372         unsigned long large_file_size; /* size started from which we consider file to be a large one(in blocks) */
 373         int border;             /* percentage of disk, border takes */
 374         int preallocmin;        /* Minimal file size (in blocks) starting from which we do preallocations */
 375         int preallocsize;       /* Number of blocks we try to prealloc when file
 376                                    reaches preallocmin size (in blocks) or
 377                                    prealloc_list is empty. */
 378     } s_alloc_options;
 379
 380                                 /* Comment? -Hans */
 381     wait_queue_head_t s_wait;
 382                                 /* To be obsoleted soon by per buffer seals.. -Hans */
 383     atomic_t s_generation_counter; // increased by one every time the
 384     // tree gets re-balanced
 385     unsigned long s_properties;    /* File system properties. Currently holds
 386                                      on-disk FS format */
 387
 388     /* session statistics */
 389     int s_kmallocs;
 390     int s_disk_reads;
 391     int s_disk_writes;
 392     int s_fix_nodes;
 393     int s_do_balance;
 394     int s_unneeded_left_neighbor;
 395     int s_good_search_by_key_reada;
 396     int s_bmaps;
 397     int s_bmaps_without_search;
 398     int s_direct2indirect;
 399     int s_indirect2direct;
 400         /* set up when it's ok for reiserfs_read_inode2() to read from
 401            disk inode with nlink==0. Currently this is only used during
 402            finish_unfinished() processing at mount time */
 403     int s_is_unlinked_ok;
 404     reiserfs_proc_info_data_t s_proc_info_data;
 405     struct proc_dir_entry *procdir;
 406     int reserved_blocks; /* amount of blocks reserved for further allocations */
 407     spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
 408     struct dentry *priv_root; /* root of /.reiserfs_priv */
 409     struct dentry *xattr_root; /* root of /.reiserfs_priv/.xa */
 410     struct rw_semaphore xattr_dir_sem;
 411
 412     int j_errno;
 413 #ifdef CONFIG_QUOTA
 414     char *s_qf_names[MAXQUOTAS];
 415     int s_jquota_fmt;
 416 #endif
 417 };
 418
 419 /* Definitions of reiserfs on-disk properties: */
 420 #define REISERFS_3_5 0
 421 #define REISERFS_3_6 1
 422
 423 enum reiserfs_mount_options {
 424 /* Mount options */
 425     REISERFS_LARGETAIL,  /* large tails will be created in a session */
 426     REISERFS_SMALLTAIL,  /* small (for files less than block size) tails will be created in a session */
 427     REPLAYONLY, /* replay journal and return 0. Use by fsck */
 428     REISERFS_CONVERT,    /* -o conv: causes conversion of old
 429                                  format super block to the new
 430                                  format. If not specified - old
 431                                  partition will be dealt with in a
 432                                  manner of 3.5.x */
 433
 434 /* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
 435 ** reiserfs disks from 3.5.19 or earlier.  99% of the time, this option
 436 ** is not required.  If the normal autodection code can't determine which
 437 ** hash to use (because both hases had the same value for a file)
 438 ** use this option to force a specific hash.  It won't allow you to override
 439 ** the existing hash on the FS, so if you have a tea hash disk, and mount
 440 ** with -o hash=rupasov, the mount will fail.
 441 */
 442     FORCE_TEA_HASH,      /* try to force tea hash on mount */
 443     FORCE_RUPASOV_HASH,  /* try to force rupasov hash on mount */
 444     FORCE_R5_HASH,       /* try to force rupasov hash on mount */
 445     FORCE_HASH_DETECT,   /* try to detect hash function on mount */
 446
 447     REISERFS_DATA_LOG,
 448     REISERFS_DATA_ORDERED,
 449     REISERFS_DATA_WRITEBACK,
 450
 451 /* used for testing experimental features, makes benchmarking new
 452    features with and without more convenient, should never be used by
 453    users in any code shipped to users (ideally) */
 454
 455     REISERFS_NO_BORDER,
 456     REISERFS_NO_UNHASHED_RELOCATION,
 457     REISERFS_HASHED_RELOCATION,
 458     REISERFS_ATTRS,
 459     REISERFS_XATTRS,
 460     REISERFS_XATTRS_USER,
 461     REISERFS_POSIXACL,
 462     REISERFS_BARRIER_NONE,
 463     REISERFS_BARRIER_FLUSH,
 464
 465     /* Actions on error */
 466     REISERFS_ERROR_PANIC,
 467     REISERFS_ERROR_RO,
 468     REISERFS_ERROR_CONTINUE,
 469
 470     REISERFS_TEST1,
 471     REISERFS_TEST2,
 472     REISERFS_TEST3,
 473     REISERFS_TEST4,
 474     REISERFS_UNSUPPORTED_OPT,
 475 };
 476
 477 #define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
 478 #define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
 479 #define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
 480 #define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
 481 #define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
 482 #define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
 483 #define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
 484 #define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
 485
 486 #define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
 487 #define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
 488 #define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
 489 #define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
 490 #define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
 491 #define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
 492 #define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
 493 #define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
 494 #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
 495 #define reiserfs_xattrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS))
 496 #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
 497 #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
 498 #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
 499 #define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
 500 #define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
 501
 502 #define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC))
 503 #define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO))
 504
 505 void reiserfs_file_buffer (struct buffer_head * bh, int list);
 506 extern struct file_system_type reiserfs_fs_type;
 507 int reiserfs_resize(struct super_block *, unsigned long) ;
 508
 509 #define CARRY_ON                0
 510 #define SCHEDULE_OCCURRED       1
 511
 512
 513 #define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
 514 #define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
 515 #define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
 516 #define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
 517 #define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
 518
 519 #define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
 520
 521 /* A safe version of the "bdevname", which returns the "s_id" field of
 522  * a superblock or else "Null superblock" if the super block is NULL.
 523  */
 524 static inline char *reiserfs_bdevname(struct super_block *s)
 525 {
 526         return (s == NULL) ? "Null superblock" : s -> s_id;
 527 }
 528
 529 #define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal)))
 530 static inline int __reiserfs_is_journal_aborted (struct reiserfs_journal *journal)
 531 {
 532     return test_bit (J_ABORTED, &journal->j_state);
 533 }
 534
 535 #endif  /* _LINUX_REISER_FS_SB */