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Diffstat (limited to 'e2fsprogs/ext2fs/kernel-jbd.h')
-rw-r--r--e2fsprogs/ext2fs/kernel-jbd.h140
1 files changed, 70 insertions, 70 deletions
diff --git a/e2fsprogs/ext2fs/kernel-jbd.h b/e2fsprogs/ext2fs/kernel-jbd.h
index d0efdb3..8a5de5e 100644
--- a/e2fsprogs/ext2fs/kernel-jbd.h
+++ b/e2fsprogs/ext2fs/kernel-jbd.h
@@ -1,6 +1,6 @@
/*
* linux/include/linux/jbd.h
- *
+ *
* Written by Stephen C. Tweedie <sct@redhat.com>
*
* Copyright 1998-2000 Red Hat, Inc --- All Rights Reserved
@@ -51,7 +51,7 @@ extern int journal_enable_debug;
if ((n) <= journal_enable_debug) { \
printk (KERN_DEBUG "(%s, %d): %s: ", \
__FILE__, __LINE__, __FUNCTION__); \
- printk (f, ## a); \
+ printk (f, ## a); \
} \
} while (0)
#else
@@ -59,7 +59,7 @@ extern int journal_enable_debug;
#define jbd_debug(f, a...) /**/
#else
#define jbd_debug(f, ...) /**/
-#endif
+#endif
#endif
#else
#define jbd_debug(x) /* AIX doesn't do STDC */
@@ -88,7 +88,7 @@ typedef struct journal_s journal_t; /* Journal control structure */
* On-disk structures
*/
-/*
+/*
* Descriptor block types:
*/
@@ -109,8 +109,8 @@ typedef struct journal_header_s
} journal_header_t;
-/*
- * The block tag: used to describe a single buffer in the journal
+/*
+ * The block tag: used to describe a single buffer in the journal
*/
typedef struct journal_block_tag_s
{
@@ -118,9 +118,9 @@ typedef struct journal_block_tag_s
__u32 t_flags; /* See below */
} journal_block_tag_t;
-/*
+/*
* The revoke descriptor: used on disk to describe a series of blocks to
- * be revoked from the log
+ * be revoked from the log
*/
typedef struct journal_revoke_header_s
{
@@ -149,7 +149,7 @@ typedef struct journal_superblock_s
__u32 s_blocksize; /* journal device blocksize */
__u32 s_maxlen; /* total blocks in journal file */
__u32 s_first; /* first block of log information */
-
+
/* 0x0018 */
/* Dynamic information describing the current state of the log */
__u32 s_sequence; /* first commit ID expected in log */
@@ -161,17 +161,17 @@ typedef struct journal_superblock_s
/* 0x0024 */
/* Remaining fields are only valid in a version-2 superblock */
- __u32 s_feature_compat; /* compatible feature set */
- __u32 s_feature_incompat; /* incompatible feature set */
- __u32 s_feature_ro_compat; /* readonly-compatible feature set */
+ __u32 s_feature_compat; /* compatible feature set */
+ __u32 s_feature_incompat; /* incompatible feature set */
+ __u32 s_feature_ro_compat; /* readonly-compatible feature set */
/* 0x0030 */
__u8 s_uuid[16]; /* 128-bit uuid for journal */
/* 0x0040 */
__u32 s_nr_users; /* Nr of filesystems sharing log */
-
+
__u32 s_dynsuper; /* Blocknr of dynamic superblock copy*/
-
+
/* 0x0048 */
__u32 s_max_transaction; /* Limit of journal blocks per trans.*/
__u32 s_max_trans_data; /* Limit of data blocks per trans. */
@@ -276,7 +276,7 @@ struct jbd_revoke_table_s;
* the transaction, so that at all times we know how many buffers the
* outstanding updates on a transaction might possibly touch. */
-struct handle_s
+struct handle_s
{
/* Which compound transaction is this update a part of? */
transaction_t * h_transaction;
@@ -314,14 +314,14 @@ struct handle_s
* flushed to home for finished transactions.
*/
-struct transaction_s
+struct transaction_s
{
/* Pointer to the journal for this transaction. */
journal_t * t_journal;
-
+
/* Sequence number for this transaction */
tid_t t_tid;
-
+
/* Transaction's current state */
enum {
T_RUNNING,
@@ -329,74 +329,74 @@ struct transaction_s
T_RUNDOWN,
T_FLUSH,
T_COMMIT,
- T_FINISHED
+ T_FINISHED
} t_state;
/* Where in the log does this transaction's commit start? */
unsigned long t_log_start;
-
+
/* Doubly-linked circular list of all inodes owned by this
- transaction */ /* AKPM: unused */
+ transaction */ /* AKPM: unused */
struct inode * t_ilist;
-
+
/* Number of buffers on the t_buffers list */
int t_nr_buffers;
-
+
/* Doubly-linked circular list of all buffers reserved but not
- yet modified by this transaction */
+ yet modified by this transaction */
struct journal_head * t_reserved_list;
-
+
/* Doubly-linked circular list of all metadata buffers owned by this
- transaction */
+ transaction */
struct journal_head * t_buffers;
-
+
/*
* Doubly-linked circular list of all data buffers still to be
* flushed before this transaction can be committed.
* Protected by journal_datalist_lock.
*/
struct journal_head * t_sync_datalist;
-
+
/*
* Doubly-linked circular list of all writepage data buffers
* still to be written before this transaction can be committed.
* Protected by journal_datalist_lock.
*/
struct journal_head * t_async_datalist;
-
+
/* Doubly-linked circular list of all forget buffers (superceded
- buffers which we can un-checkpoint once this transaction
- commits) */
+ buffers which we can un-checkpoint once this transaction
+ commits) */
struct journal_head * t_forget;
-
+
/*
* Doubly-linked circular list of all buffers still to be
* flushed before this transaction can be checkpointed.
*/
/* Protected by journal_datalist_lock */
struct journal_head * t_checkpoint_list;
-
+
/* Doubly-linked circular list of temporary buffers currently
- undergoing IO in the log */
+ undergoing IO in the log */
struct journal_head * t_iobuf_list;
-
+
/* Doubly-linked circular list of metadata buffers being
- shadowed by log IO. The IO buffers on the iobuf list and the
- shadow buffers on this list match each other one for one at
- all times. */
+ shadowed by log IO. The IO buffers on the iobuf list and the
+ shadow buffers on this list match each other one for one at
+ all times. */
struct journal_head * t_shadow_list;
-
+
/* Doubly-linked circular list of control buffers being written
- to the log. */
+ to the log. */
struct journal_head * t_log_list;
-
+
/* Number of outstanding updates running on this transaction */
int t_updates;
/* Number of buffers reserved for use by all handles in this
* transaction handle but not yet modified. */
int t_outstanding_credits;
-
+
/*
* Forward and backward links for the circular list of all
* transactions awaiting checkpoint.
@@ -415,7 +415,7 @@ struct transaction_s
/* The journal_t maintains all of the journaling state information for a
* single filesystem. It is linked to from the fs superblock structure.
- *
+ *
* We use the journal_t to keep track of all outstanding transaction
* activity on the filesystem, and to manage the state of the log
* writing process. */
@@ -428,7 +428,7 @@ struct journal_s
/* Is there an outstanding uncleared error on the journal (from
* a prior abort)? */
int j_errno;
-
+
/* The superblock buffer */
struct buffer_head * j_sb_buffer;
journal_superblock_t * j_superblock;
@@ -438,49 +438,49 @@ struct journal_s
/* Number of processes waiting to create a barrier lock */
int j_barrier_count;
-
+
/* The barrier lock itself */
struct semaphore j_barrier;
-
+
/* Transactions: The current running transaction... */
transaction_t * j_running_transaction;
-
+
/* ... the transaction we are pushing to disk ... */
transaction_t * j_committing_transaction;
-
+
/* ... and a linked circular list of all transactions waiting
* for checkpointing. */
/* Protected by journal_datalist_lock */
transaction_t * j_checkpoint_transactions;
/* Wait queue for waiting for a locked transaction to start
- committing, or for a barrier lock to be released */
+ committing, or for a barrier lock to be released */
wait_queue_head_t j_wait_transaction_locked;
-
+
/* Wait queue for waiting for checkpointing to complete */
wait_queue_head_t j_wait_logspace;
-
+
/* Wait queue for waiting for commit to complete */
wait_queue_head_t j_wait_done_commit;
-
+
/* Wait queue to trigger checkpointing */
wait_queue_head_t j_wait_checkpoint;
-
+
/* Wait queue to trigger commit */
wait_queue_head_t j_wait_commit;
-
+
/* Wait queue to wait for updates to complete */
wait_queue_head_t j_wait_updates;
/* Semaphore for locking against concurrent checkpoints */
- struct semaphore j_checkpoint_sem;
+ struct semaphore j_checkpoint_sem;
/* The main journal lock, used by lock_journal() */
struct semaphore j_sem;
-
+
/* Journal head: identifies the first unused block in the journal. */
unsigned long j_head;
-
+
/* Journal tail: identifies the oldest still-used block in the
* journal. */
unsigned long j_tail;
@@ -546,12 +546,12 @@ struct journal_s
struct list_head j_all_journals;
/* The revoke table: maintains the list of revoked blocks in the
- current transaction. */
+ current transaction. */
struct jbd_revoke_table_s *j_revoke;
};
-/*
- * Journal flag definitions
+/*
+ * Journal flag definitions
*/
#define JFS_UNMOUNT 0x001 /* Journal thread is being destroyed */
#define JFS_ABORT 0x002 /* Journaling has been aborted for errors. */
@@ -559,7 +559,7 @@ struct journal_s
#define JFS_FLUSHED 0x008 /* The journal superblock has been flushed */
#define JFS_LOADED 0x010 /* The journal superblock has been loaded */
-/*
+/*
* Function declarations for the journaling transaction and buffer
* management
*/
@@ -589,7 +589,7 @@ extern void journal_insert_checkpoint(struct journal_head *, transaction_t *);
extern void __journal_insert_checkpoint(struct journal_head *,transaction_t *);
/* Buffer IO */
-extern int
+extern int
journal_write_metadata_buffer(transaction_t *transaction,
struct journal_head *jh_in,
struct journal_head **jh_out,
@@ -603,7 +603,7 @@ extern void __wait_on_journal (journal_t *);
*
* We need to lock the journal during transaction state changes so that
* nobody ever tries to take a handle on the running transaction while
- * we are in the middle of moving it to the commit phase.
+ * we are in the middle of moving it to the commit phase.
*
* Note that the locking is completely interrupt unsafe. We never touch
* journal structures from interrupts.
@@ -637,7 +637,7 @@ static inline handle_t *journal_current_handle(void)
/* The journaling code user interface:
*
* Create and destroy handles
- * Register buffer modifications against the current transaction.
+ * Register buffer modifications against the current transaction.
*/
extern handle_t *journal_start(journal_t *, int nblocks);
@@ -665,11 +665,11 @@ extern journal_t * journal_init_dev(kdev_t dev, kdev_t fs_dev,
int start, int len, int bsize);
extern journal_t * journal_init_inode (struct inode *);
extern int journal_update_format (journal_t *);
-extern int journal_check_used_features
+extern int journal_check_used_features
(journal_t *, unsigned long, unsigned long, unsigned long);
-extern int journal_check_available_features
+extern int journal_check_available_features
(journal_t *, unsigned long, unsigned long, unsigned long);
-extern int journal_set_features
+extern int journal_set_features
(journal_t *, unsigned long, unsigned long, unsigned long);
extern int journal_create (journal_t *);
extern int journal_load (journal_t *journal);
@@ -747,7 +747,7 @@ do { \
* bit, when set, indicates that we have had a fatal error somewhere,
* either inside the journaling layer or indicated to us by the client
* (eg. ext3), and that we and should not commit any further
- * transactions.
+ * transactions.
*/
static inline int is_journal_aborted(journal_t *journal)
@@ -770,7 +770,7 @@ static inline void journal_abort_handle(handle_t *handle)
/* Not all architectures define BUG() */
#ifndef BUG
#define BUG() do { \
- printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
+ printk("kernel BUG at %s:%d!\n", __FILE__, __LINE__); \
* ((char *) 0) = 0; \
} while (0)
#endif /* BUG */
@@ -826,7 +826,7 @@ extern int journal_blocks_per_page(struct inode *inode);
#define BJ_LogCtl 7 /* Buffer contains log descriptors */
#define BJ_Reserved 8 /* Buffer is reserved for access by journal */
#define BJ_Types 9
-
+
extern int jbd_blocks_per_page(struct inode *inode);
#ifdef __KERNEL__