reiserfs_fs_sb.h
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上传日期:2013-02-24
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- /* Copyright 1996-2000 Hans Reiser, see reiserfs/README for licensing
- * and copyright details */
- #ifndef _LINUX_REISER_FS_SB
- #define _LINUX_REISER_FS_SB
- #ifdef __KERNEL__
- #include <linux/tqueue.h>
- #endif
- //
- // super block's field values
- //
- /*#define REISERFS_VERSION 0 undistributed bitmap */
- /*#define REISERFS_VERSION 1 distributed bitmap and resizer*/
- #define REISERFS_VERSION_2 2 /* distributed bitmap, resizer, 64-bit, etc*/
- #define UNSET_HASH 0 // read_super will guess about, what hash names
- // in directories were sorted with
- #define TEA_HASH 1
- #define YURA_HASH 2
- #define R5_HASH 3
- #define DEFAULT_HASH R5_HASH
- /* this is the on disk super block */
- struct reiserfs_super_block
- {
- __u32 s_block_count;
- __u32 s_free_blocks; /* free blocks count */
- __u32 s_root_block; /* root block number */
- __u32 s_journal_block; /* journal block number */
- __u32 s_journal_dev; /* journal device number */
- /* Since journal size is currently a #define in a header file, if
- ** someone creates a disk with a 16MB journal and moves it to a
- ** system with 32MB journal default, they will overflow their journal
- ** when they mount the disk. s_orig_journal_size, plus some checks
- ** while mounting (inside journal_init) prevent that from happening
- */
- /* great comment Chris. Thanks. -Hans */
- __u32 s_orig_journal_size;
- __u32 s_journal_trans_max ; /* max number of blocks in a transaction. */
- __u32 s_journal_block_count ; /* total size of the journal. can change over time */
- __u32 s_journal_max_batch ; /* max number of blocks to batch into a trans */
- __u32 s_journal_max_commit_age ; /* in seconds, how old can an async commit be */
- __u32 s_journal_max_trans_age ; /* in seconds, how old can a transaction be */
- __u16 s_blocksize; /* block size */
- __u16 s_oid_maxsize; /* max size of object id array, see get_objectid() commentary */
- __u16 s_oid_cursize; /* current size of object id array */
- __u16 s_state; /* valid or error */
- char s_magic[12]; /* reiserfs magic string indicates that file system is reiserfs */
- __u32 s_hash_function_code; /* indicate, what hash function is being use to sort names in a directory*/
- __u16 s_tree_height; /* height of disk tree */
- __u16 s_bmap_nr; /* amount of bitmap blocks needed to address each block of file system */
- __u16 s_version; /* I'd prefer it if this was a string,
- something like "3.6.4", and maybe
- 16 bytes long mostly unused. We
- don't need to save bytes in the
- superblock. -Hans */
- __u16 s_reserved;
- __u32 s_inode_generation;
- char s_unused[124] ; /* zero filled by mkreiserfs */
- } __attribute__ ((__packed__));
- #define SB_SIZE (sizeof(struct reiserfs_super_block))
- /* struct reiserfs_super_block accessors/mutators
- * since this is a disk structure, it will always be in
- * little endian format. */
- #define sb_block_count(sbp) (le32_to_cpu((sbp)->s_block_count))
- #define set_sb_block_count(sbp,v) ((sbp)->s_block_count = cpu_to_le32(v))
- #define sb_free_blocks(sbp) (le32_to_cpu((sbp)->s_free_blocks))
- #define set_sb_free_blocks(sbp,v) ((sbp)->s_free_blocks = cpu_to_le32(v))
- #define sb_root_block(sbp) (le32_to_cpu((sbp)->s_root_block))
- #define set_sb_root_block(sbp,v) ((sbp)->s_root_block = cpu_to_le32(v))
- #define sb_journal_block(sbp) (le32_to_cpu((sbp)->s_journal_block))
- #define set_sb_journal_block(sbp,v) ((sbp)->s_journal_block = cpu_to_le32(v))
- #define sb_journal_dev(sbp) (le32_to_cpu((sbp)->s_journal_dev))
- #define set_sb_journal_dev(sbp,v) ((sbp)->s_journal_dev = cpu_to_le32(v))
- #define sb_orig_journal_size(sbp) (le32_to_cpu((sbp)->s_orig_journal_size))
- #define set_sb_orig_journal_size(sbp,v)
- ((sbp)->s_orig_journal_size = cpu_to_le32(v))
- #define sb_journal_trans_max(sbp) (le32_to_cpu((sbp)->s_journal_trans_max))
- #define set_journal_trans_max(sbp,v)
- ((sbp)->s_journal_trans_max = cpu_to_le32(v))
- #define sb_journal_block_count(sbp) (le32_to_cpu((sbp)->journal_block_count))
- #define sb_set_journal_block_count(sbp,v)
- ((sbp)->s_journal_block_count = cpu_to_le32(v))
- #define sb_journal_max_batch(sbp) (le32_to_cpu((sbp)->s_journal_max_batch))
- #define set_sb_journal_max_batch(sbp,v)
- ((sbp)->s_journal_max_batch = cpu_to_le32(v))
- #define sb_jourmal_max_commit_age(sbp)
- (le32_to_cpu((sbp)->s_journal_max_commit_age))
- #define set_sb_journal_max_commit_age(sbp,v)
- ((sbp)->s_journal_max_commit_age = cpu_to_le32(v))
- #define sb_jourmal_max_trans_age(sbp)
- (le32_to_cpu((sbp)->s_journal_max_trans_age))
- #define set_sb_journal_max_trans_age(sbp,v)
- ((sbp)->s_journal_max_trans_age = cpu_to_le32(v))
- #define sb_blocksize(sbp) (le16_to_cpu((sbp)->s_blocksize))
- #define set_sb_blocksize(sbp,v) ((sbp)->s_blocksize = cpu_to_le16(v))
- #define sb_oid_maxsize(sbp) (le16_to_cpu((sbp)->s_oid_maxsize))
- #define set_sb_oid_maxsize(sbp,v) ((sbp)->s_oid_maxsize = cpu_to_le16(v))
- #define sb_oid_cursize(sbp) (le16_to_cpu((sbp)->s_oid_cursize))
- #define set_sb_oid_cursize(sbp,v) ((sbp)->s_oid_cursize = cpu_to_le16(v))
- #define sb_state(sbp) (le16_to_cpu((sbp)->s_state))
- #define set_sb_state(sbp,v) ((sbp)->s_state = cpu_to_le16(v))
- #define sb_hash_function_code(sbp)
- (le32_to_cpu((sbp)->s_hash_function_code))
- #define set_sb_hash_function_code(sbp,v)
- ((sbp)->s_hash_function_code = cpu_to_le32(v))
- #define sb_tree_height(sbp) (le16_to_cpu((sbp)->s_tree_height))
- #define set_sb_tree_height(sbp,v) ((sbp)->s_tree_height = cpu_to_le16(v))
- #define sb_bmap_nr(sbp) (le16_to_cpu((sbp)->s_bmap_nr))
- #define set_sb_bmap_nr(sbp,v) ((sbp)->s_bmap_nr = cpu_to_le16(v))
- #define sb_version(sbp) (le16_to_cpu((sbp)->s_version))
- #define set_sb_version(sbp,v) ((sbp)->s_version = cpu_to_le16(v))
- /* this is the super from 3.5.X, where X >= 10 */
- struct reiserfs_super_block_v1
- {
- __u32 s_block_count; /* blocks count */
- __u32 s_free_blocks; /* free blocks count */
- __u32 s_root_block; /* root block number */
- __u32 s_journal_block; /* journal block number */
- __u32 s_journal_dev; /* journal device number */
- __u32 s_orig_journal_size; /* size of the journal on FS creation. used to make sure they don't overflow it */
- __u32 s_journal_trans_max ; /* max number of blocks in a transaction. */
- __u32 s_journal_block_count ; /* total size of the journal. can change over time */
- __u32 s_journal_max_batch ; /* max number of blocks to batch into a trans */
- __u32 s_journal_max_commit_age ; /* in seconds, how old can an async commit be */
- __u32 s_journal_max_trans_age ; /* in seconds, how old can a transaction be */
- __u16 s_blocksize; /* block size */
- __u16 s_oid_maxsize; /* max size of object id array, see get_objectid() commentary */
- __u16 s_oid_cursize; /* current size of object id array */
- __u16 s_state; /* valid or error */
- char s_magic[16]; /* reiserfs magic string indicates that file system is reiserfs */
- __u16 s_tree_height; /* height of disk tree */
- __u16 s_bmap_nr; /* amount of bitmap blocks needed to address each block of file system */
- __u32 s_reserved;
- } __attribute__ ((__packed__));
- #define SB_SIZE_V1 (sizeof(struct reiserfs_super_block_v1))
- /* LOGGING -- */
- /* These all interelate for performance.
- **
- ** If the journal block count is smaller than n transactions, you lose speed.
- ** I don't know what n is yet, I'm guessing 8-16.
- **
- ** typical transaction size depends on the application, how often fsync is
- ** called, and how many metadata blocks you dirty in a 30 second period.
- ** The more small files (<16k) you use, the larger your transactions will
- ** be.
- **
- ** If your journal fills faster than dirty buffers get flushed to disk, it must flush them before allowing the journal
- ** to wrap, which slows things down. If you need high speed meta data updates, the journal should be big enough
- ** to prevent wrapping before dirty meta blocks get to disk.
- **
- ** If the batch max is smaller than the transaction max, you'll waste space at the end of the journal
- ** because journal_end sets the next transaction to start at 0 if the next transaction has any chance of wrapping.
- **
- ** The large the batch max age, the better the speed, and the more meta data changes you'll lose after a crash.
- **
- */
- /* don't mess with these for a while */
- /* we have a node size define somewhere in reiserfs_fs.h. -Hans */
- #define JOURNAL_BLOCK_SIZE 4096 /* BUG gotta get rid of this */
- #define JOURNAL_MAX_CNODE 1500 /* max cnodes to allocate. */
- #define JOURNAL_TRANS_MAX 1024 /* biggest possible single transaction, don't change for now (8/3/99) */
- #define JOURNAL_HASH_SIZE 8192
- #define JOURNAL_NUM_BITMAPS 5 /* number of copies of the bitmaps to have floating. Must be >= 2 */
- #define JOURNAL_LIST_COUNT 64
- /* these are bh_state bit flag offset numbers, for use in the buffer head */
- #define BH_JDirty 16 /* journal data needs to be written before buffer can be marked dirty */
- #define BH_JDirty_wait 18 /* commit is done, buffer marked dirty */
- #define BH_JNew 19 /* buffer allocated during this transaction, no need to write if freed during this trans too */
- /* ugly. metadata blocks must be prepared before they can be logged.
- ** prepared means unlocked and cleaned. If the block is prepared, but not
- ** logged for some reason, any bits cleared while preparing it must be
- ** set again.
- */
- #define BH_JPrepared 20 /* block has been prepared for the log */
- #define BH_JRestore_dirty 22 /* restore the dirty bit later */
- /* One of these for every block in every transaction
- ** Each one is in two hash tables. First, a hash of the current transaction, and after journal_end, a
- ** hash of all the in memory transactions.
- ** next and prev are used by the current transaction (journal_hash).
- ** hnext and hprev are used by journal_list_hash. If a block is in more than one transaction, the journal_list_hash
- ** links it in multiple times. This allows flush_journal_list to remove just the cnode belonging
- ** to a given transaction.
- */
- struct reiserfs_journal_cnode {
- struct buffer_head *bh ; /* real buffer head */
- kdev_t dev ; /* dev of real buffer head */
- unsigned long blocknr ; /* block number of real buffer head, == 0 when buffer on disk */
- long state ;
- struct reiserfs_journal_list *jlist ; /* journal list this cnode lives in */
- struct reiserfs_journal_cnode *next ; /* next in transaction list */
- struct reiserfs_journal_cnode *prev ; /* prev in transaction list */
- struct reiserfs_journal_cnode *hprev ; /* prev in hash list */
- struct reiserfs_journal_cnode *hnext ; /* next in hash list */
- };
- struct reiserfs_bitmap_node {
- int id ;
- char *data ;
- struct list_head list ;
- } ;
- struct reiserfs_list_bitmap {
- struct reiserfs_journal_list *journal_list ;
- struct reiserfs_bitmap_node **bitmaps ;
- } ;
- /*
- ** transaction handle which is passed around for all journal calls
- */
- struct reiserfs_transaction_handle {
- /* ifdef it. -Hans */
- char *t_caller ; /* debugging use */
- int t_blocks_logged ; /* number of blocks this writer has logged */
- int t_blocks_allocated ; /* number of blocks this writer allocated */
- unsigned long t_trans_id ; /* sanity check, equals the current trans id */
- struct super_block *t_super ; /* super for this FS when journal_begin was
- called. saves calls to reiserfs_get_super */
- } ;
- /*
- ** one of these for each transaction. The most important part here is the j_realblock.
- ** this list of cnodes is used to hash all the blocks in all the commits, to mark all the
- ** real buffer heads dirty once all the commits hit the disk,
- ** and to make sure every real block in a transaction is on disk before allowing the log area
- ** to be overwritten */
- struct reiserfs_journal_list {
- unsigned long j_start ;
- unsigned long j_len ;
- atomic_t j_nonzerolen ;
- atomic_t j_commit_left ;
- atomic_t j_flushing ;
- atomic_t j_commit_flushing ;
- atomic_t j_older_commits_done ; /* all commits older than this on disk*/
- unsigned long j_trans_id ;
- time_t j_timestamp ;
- struct reiserfs_list_bitmap *j_list_bitmap ;
- struct buffer_head *j_commit_bh ; /* commit buffer head */
- struct reiserfs_journal_cnode *j_realblock ;
- struct reiserfs_journal_cnode *j_freedlist ; /* list of buffers that were freed during this trans. free each of these on flush */
- wait_queue_head_t j_commit_wait ; /* wait for all the commit blocks to be flushed */
- wait_queue_head_t j_flush_wait ; /* wait for all the real blocks to be flushed */
- } ;
- struct reiserfs_page_list ; /* defined in reiserfs_fs.h */
- struct reiserfs_journal {
- struct buffer_head ** j_ap_blocks ; /* journal blocks on disk */
- struct reiserfs_journal_cnode *j_last ; /* newest journal block */
- struct reiserfs_journal_cnode *j_first ; /* oldest journal block. start here for traverse */
-
- long j_state ;
- unsigned long j_trans_id ;
- unsigned long j_mount_id ;
- unsigned long j_start ; /* start of current waiting commit (index into j_ap_blocks) */
- unsigned long j_len ; /* lenght of current waiting commit */
- unsigned long j_len_alloc ; /* number of buffers requested by journal_begin() */
- atomic_t j_wcount ; /* count of writers for current commit */
- unsigned long j_bcount ; /* batch count. allows turning X transactions into 1 */
- unsigned long j_first_unflushed_offset ; /* first unflushed transactions offset */
- unsigned long j_last_flush_trans_id ; /* last fully flushed journal timestamp */
- struct buffer_head *j_header_bh ;
- /* j_flush_pages must be flushed before the current transaction can
- ** commit
- */
- struct reiserfs_page_list *j_flush_pages ;
- time_t j_trans_start_time ; /* time this transaction started */
- wait_queue_head_t j_wait ; /* wait journal_end to finish I/O */
- atomic_t j_wlock ; /* lock for j_wait */
- wait_queue_head_t j_join_wait ; /* wait for current transaction to finish before starting new one */
- atomic_t j_jlock ; /* lock for j_join_wait */
- int j_journal_list_index ; /* journal list number of the current trans */
- int j_list_bitmap_index ; /* number of next list bitmap to use */
- int j_must_wait ; /* no more journal begins allowed. MUST sleep on j_join_wait */
- int j_next_full_flush ; /* next journal_end will flush all journal list */
- int j_next_async_flush ; /* next journal_end will flush all async commits */
- int j_cnode_used ; /* number of cnodes on the used list */
- int j_cnode_free ; /* number of cnodes on the free list */
- struct reiserfs_journal_cnode *j_cnode_free_list ;
- struct reiserfs_journal_cnode *j_cnode_free_orig ; /* orig pointer returned from vmalloc */
- int j_free_bitmap_nodes ;
- int j_used_bitmap_nodes ;
- struct list_head j_bitmap_nodes ;
- struct inode j_dummy_inode ;
- struct reiserfs_list_bitmap j_list_bitmap[JOURNAL_NUM_BITMAPS] ; /* array of bitmaps to record the deleted blocks */
- struct reiserfs_journal_list j_journal_list[JOURNAL_LIST_COUNT] ; /* array of all the journal lists */
- struct reiserfs_journal_cnode *j_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for real buffer heads in current trans */
- struct reiserfs_journal_cnode *j_list_hash_table[JOURNAL_HASH_SIZE] ; /* hash table for all the real buffer heads in all
- the transactions */
- struct list_head j_prealloc_list; /* list of inodes which have preallocated blocks */
- };
- #define JOURNAL_DESC_MAGIC "ReIsErLB" /* ick. magic string to find desc blocks in the journal */
- typedef __u32 (*hashf_t) (const signed char *, int);
- struct proc_dir_entry;
- #if defined( CONFIG_PROC_FS ) && defined( CONFIG_REISERFS_PROC_INFO )
- typedef unsigned long int stat_cnt_t;
- typedef struct reiserfs_proc_info_data
- {
- spinlock_t lock;
- int exiting;
- int max_hash_collisions;
- stat_cnt_t breads;
- stat_cnt_t bread_miss;
- stat_cnt_t search_by_key;
- stat_cnt_t search_by_key_fs_changed;
- stat_cnt_t search_by_key_restarted;
- stat_cnt_t leaked_oid;
- stat_cnt_t leaves_removable;
- /* balances per level. Use explicit 5 as MAX_HEIGHT is not visible yet. */
- stat_cnt_t balance_at[ 5 ]; /* XXX */
- /* sbk == search_by_key */
- stat_cnt_t sbk_read_at[ 5 ]; /* XXX */
- stat_cnt_t sbk_fs_changed[ 5 ];
- stat_cnt_t sbk_restarted[ 5 ];
- stat_cnt_t items_at[ 5 ]; /* XXX */
- stat_cnt_t free_at[ 5 ]; /* XXX */
- stat_cnt_t can_node_be_removed[ 5 ]; /* XXX */
- long int lnum[ 5 ]; /* XXX */
- long int rnum[ 5 ]; /* XXX */
- long int lbytes[ 5 ]; /* XXX */
- long int rbytes[ 5 ]; /* XXX */
- stat_cnt_t get_neighbors[ 5 ];
- stat_cnt_t get_neighbors_restart[ 5 ];
- stat_cnt_t need_l_neighbor[ 5 ];
- stat_cnt_t need_r_neighbor[ 5 ];
- stat_cnt_t free_block;
- struct __find_forward_stats {
- stat_cnt_t call;
- stat_cnt_t wait;
- stat_cnt_t bmap;
- stat_cnt_t retry;
- stat_cnt_t in_journal_hint;
- stat_cnt_t in_journal_out;
- } find_forward;
- struct __journal_stats {
- stat_cnt_t in_journal;
- stat_cnt_t in_journal_bitmap;
- stat_cnt_t in_journal_reusable;
- stat_cnt_t lock_journal;
- stat_cnt_t lock_journal_wait;
- stat_cnt_t journal_being;
- stat_cnt_t journal_relock_writers;
- stat_cnt_t journal_relock_wcount;
- stat_cnt_t mark_dirty;
- stat_cnt_t mark_dirty_already;
- stat_cnt_t mark_dirty_notjournal;
- stat_cnt_t restore_prepared;
- stat_cnt_t prepare;
- stat_cnt_t prepare_retry;
- } journal;
- } reiserfs_proc_info_data_t;
- #else
- typedef struct reiserfs_proc_info_data
- {} reiserfs_proc_info_data_t;
- #endif
- /* reiserfs union of in-core super block data */
- struct reiserfs_sb_info
- {
- struct buffer_head * s_sbh; /* Buffer containing the super block */
- /* both the comment and the choice of
- name are unclear for s_rs -Hans */
- struct reiserfs_super_block * s_rs; /* Pointer to the super block in the buffer */
- struct buffer_head ** s_ap_bitmap; /* array of buffers, holding block bitmap */
- struct reiserfs_journal *s_journal ; /* pointer to journal information */
- unsigned short s_mount_state; /* reiserfs state (valid, invalid) */
-
- /* Comment? -Hans */
- void (*end_io_handler)(struct buffer_head *, int);
- hashf_t s_hash_function; /* pointer to function which is used
- to sort names in directory. Set on
- mount */
- unsigned long s_mount_opt; /* reiserfs's mount options are set
- here (currently - NOTAIL, NOLOG,
- REPLAYONLY) */
- /* Comment? -Hans */
- wait_queue_head_t s_wait;
- /* To be obsoleted soon by per buffer seals.. -Hans */
- atomic_t s_generation_counter; // increased by one every time the
- // tree gets re-balanced
- unsigned long s_properties; /* File system properties. Currently holds
- on-disk FS format */
-
- /* session statistics */
- int s_kmallocs;
- int s_disk_reads;
- int s_disk_writes;
- int s_fix_nodes;
- int s_do_balance;
- int s_unneeded_left_neighbor;
- int s_good_search_by_key_reada;
- int s_bmaps;
- int s_bmaps_without_search;
- int s_direct2indirect;
- int s_indirect2direct;
- /* set up when it's ok for reiserfs_read_inode2() to read from
- disk inode with nlink==0. Currently this is only used during
- finish_unfinished() processing at mount time */
- int s_is_unlinked_ok;
- reiserfs_proc_info_data_t s_proc_info_data;
- struct proc_dir_entry *procdir;
- };
- /* Definitions of reiserfs on-disk properties: */
- #define REISERFS_3_5 0
- #define REISERFS_3_6 1
- /* Mount options */
- #define NOTAIL 0 /* -o notail: no tails will be created in a session */
- #define REPLAYONLY 3 /* replay journal and return 0. Use by fsck */
- #define REISERFS_NOLOG 4 /* -o nolog: turn journalling off */
- #define REISERFS_CONVERT 5 /* -o conv: causes conversion of old
- format super block to the new
- format. If not specified - old
- partition will be dealt with in a
- manner of 3.5.x */
- /* -o hash={tea, rupasov, r5, detect} is meant for properly mounting
- ** reiserfs disks from 3.5.19 or earlier. 99% of the time, this option
- ** is not required. If the normal autodection code can't determine which
- ** hash to use (because both hases had the same value for a file)
- ** use this option to force a specific hash. It won't allow you to override
- ** the existing hash on the FS, so if you have a tea hash disk, and mount
- ** with -o hash=rupasov, the mount will fail.
- */
- #define FORCE_TEA_HASH 6 /* try to force tea hash on mount */
- #define FORCE_RUPASOV_HASH 7 /* try to force rupasov hash on mount */
- #define FORCE_R5_HASH 8 /* try to force rupasov hash on mount */
- #define FORCE_HASH_DETECT 9 /* try to detect hash function on mount */
- /* used for testing experimental features, makes benchmarking new
- features with and without more convenient, should never be used by
- users in any code shipped to users (ideally) */
- #define REISERFS_NO_BORDER 11
- #define REISERFS_NO_UNHASHED_RELOCATION 12
- #define REISERFS_HASHED_RELOCATION 13
- #define REISERFS_TEST4 14
- #define REISERFS_TEST1 11
- #define REISERFS_TEST2 12
- #define REISERFS_TEST3 13
- #define REISERFS_TEST4 14
- #define reiserfs_r5_hash(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << FORCE_R5_HASH))
- #define reiserfs_rupasov_hash(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << FORCE_RUPASOV_HASH))
- #define reiserfs_tea_hash(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << FORCE_TEA_HASH))
- #define reiserfs_hash_detect(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << FORCE_HASH_DETECT))
- #define reiserfs_no_border(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_NO_BORDER))
- #define reiserfs_no_unhashed_relocation(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_NO_UNHASHED_RELOCATION))
- #define reiserfs_hashed_relocation(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_HASHED_RELOCATION))
- #define reiserfs_test4(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_TEST4))
- #define dont_have_tails(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << NOTAIL))
- #define replay_only(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REPLAYONLY))
- #define reiserfs_dont_log(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_NOLOG))
- #define old_format_only(s) ((s)->u.reiserfs_sb.s_properties & (1 << REISERFS_3_5))
- #define convert_reiserfs(s) ((s)->u.reiserfs_sb.s_mount_opt & (1 << REISERFS_CONVERT))
- void reiserfs_file_buffer (struct buffer_head * bh, int list);
- int reiserfs_is_super(struct super_block *s) ;
- int journal_mark_dirty(struct reiserfs_transaction_handle *, struct super_block *, struct buffer_head *bh) ;
- int flush_old_commits(struct super_block *s, int) ;
- int show_reiserfs_locks(void) ;
- int reiserfs_resize(struct super_block *, unsigned long) ;
- #define CARRY_ON 0
- #define SCHEDULE_OCCURRED 1
- #define SB_BUFFER_WITH_SB(s) ((s)->u.reiserfs_sb.s_sbh)
- #define SB_JOURNAL(s) ((s)->u.reiserfs_sb.s_journal)
- #define SB_JOURNAL_LIST(s) (SB_JOURNAL(s)->j_journal_list)
- #define SB_JOURNAL_LIST_INDEX(s) (SB_JOURNAL(s)->j_journal_list_index)
- #define SB_JOURNAL_LEN_FREE(s) (SB_JOURNAL(s)->j_journal_len_free)
- #define SB_AP_BITMAP(s) ((s)->u.reiserfs_sb.s_ap_bitmap)
- // on-disk super block fields converted to cpu form
- #define SB_DISK_SUPER_BLOCK(s) ((s)->u.reiserfs_sb.s_rs)
- #define SB_BLOCK_COUNT(s) sb_block_count (SB_DISK_SUPER_BLOCK(s))
- #define SB_FREE_BLOCKS(s) sb_free_blocks (SB_DISK_SUPER_BLOCK(s))
- #define SB_REISERFS_MAGIC(s) (SB_DISK_SUPER_BLOCK(s)->s_magic)
- #define SB_ROOT_BLOCK(s) sb_root_block (SB_DISK_SUPER_BLOCK(s))
- #define SB_TREE_HEIGHT(s) sb_tree_height (SB_DISK_SUPER_BLOCK(s))
- #define SB_REISERFS_STATE(s) sb_state (SB_DISK_SUPER_BLOCK(s))
- #define SB_VERSION(s) sb_version (SB_DISK_SUPER_BLOCK(s))
- #define SB_BMAP_NR(s) sb_bmap_nr(SB_DISK_SUPER_BLOCK(s))
- #define PUT_SB_BLOCK_COUNT(s, val) do { set_sb_block_count( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_FREE_BLOCKS(s, val) do { set_sb_free_blocks( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_ROOT_BLOCK(s, val) do { set_sb_root_block( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_TREE_HEIGHT(s, val) do { set_sb_tree_height( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_REISERFS_STATE(s, val) do { set_sb_state( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_VERSION(s, val) do { set_sb_version( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #define PUT_SB_BMAP_NR(s, val) do { set_sb_bmap_nr( SB_DISK_SUPER_BLOCK(s), val); } while (0)
- #endif /* _LINUX_REISER_FS_SB */