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-rw-r--r--include/linux/jbd.h56
1 files changed, 28 insertions, 28 deletions
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index a04c154c5207..7d847931ee5a 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -1,6 +1,6 @@
1/* 1/*
2 * linux/include/linux/jbd.h 2 * linux/include/linux/jbd.h
3 * 3 *
4 * Written by Stephen C. Tweedie <sct@redhat.com> 4 * Written by Stephen C. Tweedie <sct@redhat.com>
5 * 5 *
6 * Copyright 1998-2000 Red Hat, Inc --- All Rights Reserved 6 * Copyright 1998-2000 Red Hat, Inc --- All Rights Reserved
@@ -97,8 +97,8 @@ extern void jbd_slab_free(void *ptr, size_t size);
97 * number of outstanding buffers possible at any time. When the 97 * number of outstanding buffers possible at any time. When the
98 * operation completes, any buffer credits not used are credited back to 98 * operation completes, any buffer credits not used are credited back to
99 * the transaction, so that at all times we know how many buffers the 99 * the transaction, so that at all times we know how many buffers the
100 * outstanding updates on a transaction might possibly touch. 100 * outstanding updates on a transaction might possibly touch.
101 * 101 *
102 * This is an opaque datatype. 102 * This is an opaque datatype.
103 **/ 103 **/
104typedef struct handle_s handle_t; /* Atomic operation type */ 104typedef struct handle_s handle_t; /* Atomic operation type */
@@ -108,7 +108,7 @@ typedef struct handle_s handle_t; /* Atomic operation type */
108 * typedef journal_t - The journal_t maintains all of the journaling state information for a single filesystem. 108 * typedef journal_t - The journal_t maintains all of the journaling state information for a single filesystem.
109 * 109 *
110 * journal_t is linked to from the fs superblock structure. 110 * journal_t is linked to from the fs superblock structure.
111 * 111 *
112 * We use the journal_t to keep track of all outstanding transaction 112 * We use the journal_t to keep track of all outstanding transaction
113 * activity on the filesystem, and to manage the state of the log 113 * activity on the filesystem, and to manage the state of the log
114 * writing process. 114 * writing process.
@@ -128,7 +128,7 @@ typedef struct journal_s journal_t; /* Journal control structure */
128 * On-disk structures 128 * On-disk structures
129 */ 129 */
130 130
131/* 131/*
132 * Descriptor block types: 132 * Descriptor block types:
133 */ 133 */
134 134
@@ -149,8 +149,8 @@ typedef struct journal_header_s
149} journal_header_t; 149} journal_header_t;
150 150
151 151
152/* 152/*
153 * The block tag: used to describe a single buffer in the journal 153 * The block tag: used to describe a single buffer in the journal
154 */ 154 */
155typedef struct journal_block_tag_s 155typedef struct journal_block_tag_s
156{ 156{
@@ -158,9 +158,9 @@ typedef struct journal_block_tag_s
158 __be32 t_flags; /* See below */ 158 __be32 t_flags; /* See below */
159} journal_block_tag_t; 159} journal_block_tag_t;
160 160
161/* 161/*
162 * The revoke descriptor: used on disk to describe a series of blocks to 162 * The revoke descriptor: used on disk to describe a series of blocks to
163 * be revoked from the log 163 * be revoked from the log
164 */ 164 */
165typedef struct journal_revoke_header_s 165typedef struct journal_revoke_header_s
166{ 166{
@@ -374,10 +374,10 @@ struct jbd_revoke_table_s;
374 **/ 374 **/
375 375
376/* Docbook can't yet cope with the bit fields, but will leave the documentation 376/* Docbook can't yet cope with the bit fields, but will leave the documentation
377 * in so it can be fixed later. 377 * in so it can be fixed later.
378 */ 378 */
379 379
380struct handle_s 380struct handle_s
381{ 381{
382 /* Which compound transaction is this update a part of? */ 382 /* Which compound transaction is this update a part of? */
383 transaction_t *h_transaction; 383 transaction_t *h_transaction;
@@ -435,7 +435,7 @@ struct handle_s
435 * 435 *
436 */ 436 */
437 437
438struct transaction_s 438struct transaction_s
439{ 439{
440 /* Pointer to the journal for this transaction. [no locking] */ 440 /* Pointer to the journal for this transaction. [no locking] */
441 journal_t *t_journal; 441 journal_t *t_journal;
@@ -455,7 +455,7 @@ struct transaction_s
455 T_RUNDOWN, 455 T_RUNDOWN,
456 T_FLUSH, 456 T_FLUSH,
457 T_COMMIT, 457 T_COMMIT,
458 T_FINISHED 458 T_FINISHED
459 } t_state; 459 } t_state;
460 460
461 /* 461 /*
@@ -569,7 +569,7 @@ struct transaction_s
569 * journal_t. 569 * journal_t.
570 * @j_flags: General journaling state flags 570 * @j_flags: General journaling state flags
571 * @j_errno: Is there an outstanding uncleared error on the journal (from a 571 * @j_errno: Is there an outstanding uncleared error on the journal (from a
572 * prior abort)? 572 * prior abort)?
573 * @j_sb_buffer: First part of superblock buffer 573 * @j_sb_buffer: First part of superblock buffer
574 * @j_superblock: Second part of superblock buffer 574 * @j_superblock: Second part of superblock buffer
575 * @j_format_version: Version of the superblock format 575 * @j_format_version: Version of the superblock format
@@ -583,7 +583,7 @@ struct transaction_s
583 * @j_wait_transaction_locked: Wait queue for waiting for a locked transaction 583 * @j_wait_transaction_locked: Wait queue for waiting for a locked transaction
584 * to start committing, or for a barrier lock to be released 584 * to start committing, or for a barrier lock to be released
585 * @j_wait_logspace: Wait queue for waiting for checkpointing to complete 585 * @j_wait_logspace: Wait queue for waiting for checkpointing to complete
586 * @j_wait_done_commit: Wait queue for waiting for commit to complete 586 * @j_wait_done_commit: Wait queue for waiting for commit to complete
587 * @j_wait_checkpoint: Wait queue to trigger checkpointing 587 * @j_wait_checkpoint: Wait queue to trigger checkpointing
588 * @j_wait_commit: Wait queue to trigger commit 588 * @j_wait_commit: Wait queue to trigger commit
589 * @j_wait_updates: Wait queue to wait for updates to complete 589 * @j_wait_updates: Wait queue to wait for updates to complete
@@ -592,7 +592,7 @@ struct transaction_s
592 * @j_tail: Journal tail - identifies the oldest still-used block in the 592 * @j_tail: Journal tail - identifies the oldest still-used block in the
593 * journal. 593 * journal.
594 * @j_free: Journal free - how many free blocks are there in the journal? 594 * @j_free: Journal free - how many free blocks are there in the journal?
595 * @j_first: The block number of the first usable block 595 * @j_first: The block number of the first usable block
596 * @j_last: The block number one beyond the last usable block 596 * @j_last: The block number one beyond the last usable block
597 * @j_dev: Device where we store the journal 597 * @j_dev: Device where we store the journal
598 * @j_blocksize: blocksize for the location where we store the journal. 598 * @j_blocksize: blocksize for the location where we store the journal.
@@ -604,12 +604,12 @@ struct transaction_s
604 * @j_list_lock: Protects the buffer lists and internal buffer state. 604 * @j_list_lock: Protects the buffer lists and internal buffer state.
605 * @j_inode: Optional inode where we store the journal. If present, all journal 605 * @j_inode: Optional inode where we store the journal. If present, all journal
606 * block numbers are mapped into this inode via bmap(). 606 * block numbers are mapped into this inode via bmap().
607 * @j_tail_sequence: Sequence number of the oldest transaction in the log 607 * @j_tail_sequence: Sequence number of the oldest transaction in the log
608 * @j_transaction_sequence: Sequence number of the next transaction to grant 608 * @j_transaction_sequence: Sequence number of the next transaction to grant
609 * @j_commit_sequence: Sequence number of the most recently committed 609 * @j_commit_sequence: Sequence number of the most recently committed
610 * transaction 610 * transaction
611 * @j_commit_request: Sequence number of the most recent transaction wanting 611 * @j_commit_request: Sequence number of the most recent transaction wanting
612 * commit 612 * commit
613 * @j_uuid: Uuid of client object. 613 * @j_uuid: Uuid of client object.
614 * @j_task: Pointer to the current commit thread for this journal 614 * @j_task: Pointer to the current commit thread for this journal
615 * @j_max_transaction_buffers: Maximum number of metadata buffers to allow in a 615 * @j_max_transaction_buffers: Maximum number of metadata buffers to allow in a
@@ -823,8 +823,8 @@ struct journal_s
823 void *j_private; 823 void *j_private;
824}; 824};
825 825
826/* 826/*
827 * Journal flag definitions 827 * Journal flag definitions
828 */ 828 */
829#define JFS_UNMOUNT 0x001 /* Journal thread is being destroyed */ 829#define JFS_UNMOUNT 0x001 /* Journal thread is being destroyed */
830#define JFS_ABORT 0x002 /* Journaling has been aborted for errors. */ 830#define JFS_ABORT 0x002 /* Journaling has been aborted for errors. */
@@ -833,7 +833,7 @@ struct journal_s
833#define JFS_LOADED 0x010 /* The journal superblock has been loaded */ 833#define JFS_LOADED 0x010 /* The journal superblock has been loaded */
834#define JFS_BARRIER 0x020 /* Use IDE barriers */ 834#define JFS_BARRIER 0x020 /* Use IDE barriers */
835 835
836/* 836/*
837 * Function declarations for the journaling transaction and buffer 837 * Function declarations for the journaling transaction and buffer
838 * management 838 * management
839 */ 839 */
@@ -862,7 +862,7 @@ int __journal_remove_checkpoint(struct journal_head *);
862void __journal_insert_checkpoint(struct journal_head *, transaction_t *); 862void __journal_insert_checkpoint(struct journal_head *, transaction_t *);
863 863
864/* Buffer IO */ 864/* Buffer IO */
865extern int 865extern int
866journal_write_metadata_buffer(transaction_t *transaction, 866journal_write_metadata_buffer(transaction_t *transaction,
867 struct journal_head *jh_in, 867 struct journal_head *jh_in,
868 struct journal_head **jh_out, 868 struct journal_head **jh_out,
@@ -890,7 +890,7 @@ static inline handle_t *journal_current_handle(void)
890/* The journaling code user interface: 890/* The journaling code user interface:
891 * 891 *
892 * Create and destroy handles 892 * Create and destroy handles
893 * Register buffer modifications against the current transaction. 893 * Register buffer modifications against the current transaction.
894 */ 894 */
895 895
896extern handle_t *journal_start(journal_t *, int nblocks); 896extern handle_t *journal_start(journal_t *, int nblocks);
@@ -917,11 +917,11 @@ extern journal_t * journal_init_dev(struct block_device *bdev,
917 int start, int len, int bsize); 917 int start, int len, int bsize);
918extern journal_t * journal_init_inode (struct inode *); 918extern journal_t * journal_init_inode (struct inode *);
919extern int journal_update_format (journal_t *); 919extern int journal_update_format (journal_t *);
920extern int journal_check_used_features 920extern int journal_check_used_features
921 (journal_t *, unsigned long, unsigned long, unsigned long); 921 (journal_t *, unsigned long, unsigned long, unsigned long);
922extern int journal_check_available_features 922extern int journal_check_available_features
923 (journal_t *, unsigned long, unsigned long, unsigned long); 923 (journal_t *, unsigned long, unsigned long, unsigned long);
924extern int journal_set_features 924extern int journal_set_features
925 (journal_t *, unsigned long, unsigned long, unsigned long); 925 (journal_t *, unsigned long, unsigned long, unsigned long);
926extern int journal_create (journal_t *); 926extern int journal_create (journal_t *);
927extern int journal_load (journal_t *journal); 927extern int journal_load (journal_t *journal);
@@ -1015,7 +1015,7 @@ do { \
1015 * bit, when set, indicates that we have had a fatal error somewhere, 1015 * bit, when set, indicates that we have had a fatal error somewhere,
1016 * either inside the journaling layer or indicated to us by the client 1016 * either inside the journaling layer or indicated to us by the client
1017 * (eg. ext3), and that we and should not commit any further 1017 * (eg. ext3), and that we and should not commit any further
1018 * transactions. 1018 * transactions.
1019 */ 1019 */
1020 1020
1021static inline int is_journal_aborted(journal_t *journal) 1021static inline int is_journal_aborted(journal_t *journal)
@@ -1082,7 +1082,7 @@ static inline int jbd_space_needed(journal_t *journal)
1082#define BJ_Reserved 7 /* Buffer is reserved for access by journal */ 1082#define BJ_Reserved 7 /* Buffer is reserved for access by journal */
1083#define BJ_Locked 8 /* Locked for I/O during commit */ 1083#define BJ_Locked 8 /* Locked for I/O during commit */
1084#define BJ_Types 9 1084#define BJ_Types 9
1085 1085
1086extern int jbd_blocks_per_page(struct inode *inode); 1086extern int jbd_blocks_per_page(struct inode *inode);
1087 1087
1088#ifdef __KERNEL__ 1088#ifdef __KERNEL__