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 delayed_work j_work;
 253         struct super_block *j_work_sb;
 254         atomic_t j_async_throttle;
 255 };
 256
 257 enum journal_state_bits {
 258         J_WRITERS_BLOCKED = 1,  /* set when new writers not allowed */
 259         J_WRITERS_QUEUED,       /* set when log is full due to too many writers */
 260         J_ABORTED,              /* set when log is aborted */
 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         // FIXME: Won't work with block sizes > 8K
 269         __u16 first_zero_hint;
 270         __u16 free_count;
 271 };
 272
 273 struct proc_dir_entry;
 274
 275 #if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
 276 typedef unsigned long int stat_cnt_t;
 277 typedef struct reiserfs_proc_info_data {
 278         spinlock_t lock;
 279         int exiting;
 280         int max_hash_collisions;
 281
 282         stat_cnt_t breads;
 283         stat_cnt_t bread_miss;
 284         stat_cnt_t search_by_key;
 285         stat_cnt_t search_by_key_fs_changed;
 286         stat_cnt_t search_by_key_restarted;
 287
 288         stat_cnt_t insert_item_restarted;
 289         stat_cnt_t paste_into_item_restarted;
 290         stat_cnt_t cut_from_item_restarted;
 291         stat_cnt_t delete_solid_item_restarted;
 292         stat_cnt_t delete_item_restarted;
 293
 294         stat_cnt_t leaked_oid;
 295         stat_cnt_t leaves_removable;
 296
 297         /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
 298         stat_cnt_t balance_at[5];       /* XXX */
 299         /* sbk == search_by_key */
 300         stat_cnt_t sbk_read_at[5];      /* XXX */
 301         stat_cnt_t sbk_fs_changed[5];
 302         stat_cnt_t sbk_restarted[5];
 303         stat_cnt_t items_at[5]; /* XXX */
 304         stat_cnt_t free_at[5];  /* XXX */
 305         stat_cnt_t can_node_be_removed[5];      /* XXX */
 306         long int lnum[5];       /* XXX */
 307         long int rnum[5];       /* XXX */
 308         long int lbytes[5];     /* XXX */
 309         long int rbytes[5];     /* XXX */
 310         stat_cnt_t get_neighbors[5];
 311         stat_cnt_t get_neighbors_restart[5];
 312         stat_cnt_t need_l_neighbor[5];
 313         stat_cnt_t need_r_neighbor[5];
 314
 315         stat_cnt_t free_block;
 316         struct __scan_bitmap_stats {
 317                 stat_cnt_t call;
 318                 stat_cnt_t wait;
 319                 stat_cnt_t bmap;
 320                 stat_cnt_t retry;
 321                 stat_cnt_t in_journal_hint;
 322                 stat_cnt_t in_journal_nohint;
 323                 stat_cnt_t stolen;
 324         } scan_bitmap;
 325         struct __journal_stats {
 326                 stat_cnt_t in_journal;
 327                 stat_cnt_t in_journal_bitmap;
 328                 stat_cnt_t in_journal_reusable;
 329                 stat_cnt_t lock_journal;
 330                 stat_cnt_t lock_journal_wait;
 331                 stat_cnt_t journal_being;
 332                 stat_cnt_t journal_relock_writers;
 333                 stat_cnt_t journal_relock_wcount;
 334                 stat_cnt_t mark_dirty;
 335                 stat_cnt_t mark_dirty_already;
 336                 stat_cnt_t mark_dirty_notjournal;
 337                 stat_cnt_t restore_prepared;
 338                 stat_cnt_t prepare;
 339                 stat_cnt_t prepare_retry;
 340         } journal;
 341 } reiserfs_proc_info_data_t;
 342 #else
 343 typedef struct reiserfs_proc_info_data {
 344 } reiserfs_proc_info_data_t;
 345 #endif
 346
 347 /* reiserfs union of in-core super block data */
 348 struct reiserfs_sb_info {
 349         struct buffer_head *s_sbh;      /* Buffer containing the super block */
 350         /* both the comment and the choice of
 351            name are unclear for s_rs -Hans */
 352         struct reiserfs_super_block *s_rs;      /* Pointer to the super block in the buffer */
 353         struct reiserfs_bitmap_info *s_ap_bitmap;
 354         struct reiserfs_journal *s_journal;     /* pointer to journal information */
 355         unsigned short s_mount_state;   /* reiserfs state (valid, invalid) */
 356
 357         /* Comment? -Hans */
 358         void (*end_io_handler) (struct buffer_head *, int);
 359         hashf_t s_hash_function;        /* pointer to function which is used
 360                                            to sort names in directory. Set on
 361                                            mount */
 362         unsigned long s_mount_opt;      /* reiserfs's mount options are set
 363                                            here (currently - NOTAIL, NOLOG,
 364                                            REPLAYONLY) */
 365
 366         struct {                /* This is a structure that describes block allocator options */
 367                 unsigned long bits;     /* Bitfield for enable/disable kind of options */
 368                 unsigned long large_file_size;  /* size started from which we consider file to be a large one(in blocks) */
 369                 int border;     /* percentage of disk, border takes */
 370                 int preallocmin;        /* Minimal file size (in blocks) starting from which we do preallocations */
 371                 int preallocsize;       /* Number of blocks we try to prealloc when file
 372                                            reaches preallocmin size (in blocks) or
 373                                            prealloc_list is empty. */
 374         } s_alloc_options;
 375
 376         /* Comment? -Hans */
 377         wait_queue_head_t s_wait;
 378         /* To be obsoleted soon by per buffer seals.. -Hans */
 379         atomic_t s_generation_counter;  // increased by one every time the
 380         // tree gets re-balanced
 381         unsigned long s_properties;     /* File system properties. Currently holds
 382                                            on-disk FS format */
 383
 384         /* session statistics */
 385         int s_disk_reads;
 386         int s_disk_writes;
 387         int s_fix_nodes;
 388         int s_do_balance;
 389         int s_unneeded_left_neighbor;
 390         int s_good_search_by_key_reada;
 391         int s_bmaps;
 392         int s_bmaps_without_search;
 393         int s_direct2indirect;
 394         int s_indirect2direct;
 395         /* set up when it's ok for reiserfs_read_inode2() to read from
 396            disk inode with nlink==0. Currently this is only used during
 397            finish_unfinished() processing at mount time */
 398         int s_is_unlinked_ok;
 399         reiserfs_proc_info_data_t s_proc_info_data;
 400         struct proc_dir_entry *procdir;
 401         int reserved_blocks;    /* amount of blocks reserved for further allocations */
 402         spinlock_t bitmap_lock; /* this lock on now only used to protect reserved_blocks variable */
 403         struct dentry *priv_root;       /* root of /.reiserfs_priv */
 404 #ifdef CONFIG_REISERFS_FS_XATTR
 405         struct dentry *xattr_root;      /* root of /.reiserfs_priv/.xa */
 406         struct rw_semaphore xattr_dir_sem;
 407 #endif
 408         int j_errno;
 409 #ifdef CONFIG_QUOTA
 410         char *s_qf_names[MAXQUOTAS];
 411         int s_jquota_fmt;
 412 #endif
 413 };
 414
 415 /* Definitions of reiserfs on-disk properties: */
 416 #define REISERFS_3_5 0
 417 #define REISERFS_3_6 1
 418 #define REISERFS_OLD_FORMAT 2
 419
 420 enum reiserfs_mount_options {
 421 /* Mount options */
 422         REISERFS_LARGETAIL,     /* large tails will be created in a session */
 423         REISERFS_SMALLTAIL,     /* small (for files less than block size) tails will be created in a session */
 424         REPLAYONLY,             /* replay journal and return 0. Use by fsck */
 425         REISERFS_CONVERT,       /* -o conv: causes conversion of old
 426                                    format super block to the new
 427                                    format. If not specified - old
 428                                    partition will be dealt with in a
 429                                    manner of 3.5.x */
 430
 431 /* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
 432 ** reiserfs disks from 3.5.19 or earlier.  99% of the time, this option
 433 ** is not required.  If the normal autodection code can't determine which
 434 ** hash to use (because both hashes had the same value for a file)
 435 ** use this option to force a specific hash.  It won't allow you to override
 436 ** the existing hash on the FS, so if you have a tea hash disk, and mount
 437 ** with -o hash=rupasov, the mount will fail.
 438 */
 439         FORCE_TEA_HASH,         /* try to force tea hash on mount */
 440         FORCE_RUPASOV_HASH,     /* try to force rupasov hash on mount */
 441         FORCE_R5_HASH,          /* try to force rupasov hash on mount */
 442         FORCE_HASH_DETECT,      /* try to detect hash function on mount */
 443
 444         REISERFS_DATA_LOG,
 445         REISERFS_DATA_ORDERED,
 446         REISERFS_DATA_WRITEBACK,
 447
 448 /* used for testing experimental features, makes benchmarking new
 449    features with and without more convenient, should never be used by
 450    users in any code shipped to users (ideally) */
 451
 452         REISERFS_NO_BORDER,
 453         REISERFS_NO_UNHASHED_RELOCATION,
 454         REISERFS_HASHED_RELOCATION,
 455         REISERFS_ATTRS,
 456         REISERFS_XATTRS,
 457         REISERFS_XATTRS_USER,
 458         REISERFS_POSIXACL,
 459         REISERFS_BARRIER_NONE,
 460         REISERFS_BARRIER_FLUSH,
 461
 462         /* Actions on error */
 463         REISERFS_ERROR_PANIC,
 464         REISERFS_ERROR_RO,
 465         REISERFS_ERROR_CONTINUE,
 466
 467         REISERFS_QUOTA,         /* Some quota option specified */
 468
 469         REISERFS_TEST1,
 470         REISERFS_TEST2,
 471         REISERFS_TEST3,
 472         REISERFS_TEST4,
 473         REISERFS_UNSUPPORTED_OPT,
 474 };
 475
 476 #define reiserfs_r5_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_R5_HASH))
 477 #define reiserfs_rupasov_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_RUPASOV_HASH))
 478 #define reiserfs_tea_hash(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_TEA_HASH))
 479 #define reiserfs_hash_detect(s) (REISERFS_SB(s)->s_mount_opt & (1 << FORCE_HASH_DETECT))
 480 #define reiserfs_no_border(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_BORDER))
 481 #define reiserfs_no_unhashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
 482 #define reiserfs_hashed_relocation(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
 483 #define reiserfs_test4(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_TEST4))
 484
 485 #define have_large_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_LARGETAIL))
 486 #define have_small_tails(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_SMALLTAIL))
 487 #define replay_only(s) (REISERFS_SB(s)->s_mount_opt & (1 << REPLAYONLY))
 488 #define reiserfs_attrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ATTRS))
 489 #define old_format_only(s) (REISERFS_SB(s)->s_properties & (1 << REISERFS_3_5))
 490 #define convert_reiserfs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_CONVERT))
 491 #define reiserfs_data_log(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_LOG))
 492 #define reiserfs_data_ordered(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_ORDERED))
 493 #define reiserfs_data_writeback(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_DATA_WRITEBACK))
 494 #define reiserfs_xattrs(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS))
 495 #define reiserfs_xattrs_user(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_XATTRS_USER))
 496 #define reiserfs_posixacl(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_POSIXACL))
 497 #define reiserfs_xattrs_optional(s) (reiserfs_xattrs_user(s) || reiserfs_posixacl(s))
 498 #define reiserfs_barrier_none(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_NONE))
 499 #define reiserfs_barrier_flush(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_BARRIER_FLUSH))
 500
 501 #define reiserfs_error_panic(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_PANIC))
 502 #define reiserfs_error_ro(s) (REISERFS_SB(s)->s_mount_opt & (1 << REISERFS_ERROR_RO))
 503
 504 void reiserfs_file_buffer(struct buffer_head *bh, int list);
 505 extern struct file_system_type reiserfs_fs_type;
 506 int reiserfs_resize(struct super_block *, unsigned long);
 507
 508 #define CARRY_ON                0
 509 #define SCHEDULE_OCCURRED       1
 510
 511 #define SB_BUFFER_WITH_SB(s) (REISERFS_SB(s)->s_sbh)
 512 #define SB_JOURNAL(s) (REISERFS_SB(s)->s_journal)
 513 #define SB_JOURNAL_1st_RESERVED_BLOCK(s) (SB_JOURNAL(s)->j_1st_reserved_block)
 514 #define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
 515 #define SB_AP_BITMAP(s) (REISERFS_SB(s)->s_ap_bitmap)
 516
 517 #define SB_DISK_JOURNAL_HEAD(s) (SB_JOURNAL(s)->j_header_bh->)
 518
 519 /* A safe version of the "bdevname", which returns the "s_id" field of
 520  * a superblock or else "Null superblock" if the super block is NULL.
 521  */
 522 static inline char *reiserfs_bdevname(struct super_block *s)
 523 {
 524         return (s == NULL) ? "Null superblock" : s->s_id;
 525 }
 526
 527 #define reiserfs_is_journal_aborted(journal) (unlikely (__reiserfs_is_journal_aborted (journal)))
 528 static inline int __reiserfs_is_journal_aborted(struct reiserfs_journal
 529                                                 *journal)
 530 {
 531         return test_bit(J_ABORTED, &journal->j_state);
 532 }
 533
 534 #endif                          /* _LINUX_REISER_FS_SB */