#include <linux/mutex.h>
#include <linux/timer.h>
#include <linux/lockdep.h>
-
-#include <asm/semaphore.h>
+#include <linux/slab.h>
#define journal_oom_retry 1
/*
- * Define JBD_PARANIOD_IOFAIL to cause a kernel BUG() if ext3 finds
+ * Define JBD_PARANOID_IOFAIL to cause a kernel BUG() if ext3 finds
* certain classes of error which can occur due to failed IOs. Under
* normal use we want ext3 to continue after such errors, because
* hardware _can_ fail, but for debugging purposes when running tests on
do { \
if ((n) <= journal_enable_debug) { \
printk (KERN_DEBUG "(%s, %d): %s: ", \
- __FILE__, __LINE__, __FUNCTION__); \
+ __FILE__, __LINE__, __func__); \
printk (f, ## a); \
} \
} while (0)
#define J_ASSERT(assert) BUG_ON(!(assert))
-#if defined(CONFIG_BUFFER_DEBUG)
-void buffer_assertion_failure(struct buffer_head *bh);
-#define J_ASSERT_BH(bh, expr) \
- do { \
- if (!(expr)) \
- buffer_assertion_failure(bh); \
- J_ASSERT(expr); \
- } while (0)
-#define J_ASSERT_JH(jh, expr) J_ASSERT_BH(jh2bh(jh), expr)
-#else
#define J_ASSERT_BH(bh, expr) J_ASSERT(expr)
#define J_ASSERT_JH(jh, expr) J_ASSERT(expr)
-#endif
#if defined(JBD_PARANOID_IOFAIL)
#define J_EXPECT(expr, why...) J_ASSERT(expr)
struct jbd_revoke_table_s;
/**
- * struct handle_s - The handle_s type is the concrete type associated with
- * handle_t.
+ * struct handle_s - this is the concrete type associated with handle_t.
* @h_transaction: Which compound transaction is this update a part of?
* @h_buffer_credits: Number of remaining buffers we are allowed to dirty.
* @h_ref: Reference count on this handle
* @h_jdata: flag to force data journaling
* @h_aborted: flag indicating fatal error on handle
* @h_lockdep_map: lockdep info for debugging lock problems
- **/
-
-/* Docbook can't yet cope with the bit fields, but will leave the documentation
- * in so it can be fixed later.
*/
-
struct handle_s
{
/* Which compound transaction is this update a part of? */
enum {
T_RUNNING,
T_LOCKED,
- T_RUNDOWN,
T_FLUSH,
T_COMMIT,
+ T_COMMIT_RECORD,
T_FINISHED
} t_state;
/*
* Where in the log does this transaction's commit start? [no locking]
*/
- unsigned long t_log_start;
+ unsigned int t_log_start;
/* Number of buffers on the t_buffers list [j_list_lock] */
int t_nr_buffers;
unsigned long t_expires;
/*
+ * When this transaction started, in nanoseconds [no locking]
+ */
+ ktime_t t_start_time;
+
+ /*
* How many handles used this transaction? [t_handle_lock]
*/
int t_handle_count;
+ /*
+ * This transaction is being forced and some process is
+ * waiting for it to finish.
+ */
+ unsigned int t_synchronous_commit:1;
};
/**
- * struct journal_s - The journal_s type is the concrete type associated with
- * journal_t.
+ * struct journal_s - this is the concrete type associated with journal_t.
* @j_flags: General journaling state flags
* @j_errno: Is there an outstanding uncleared error on the journal (from a
* prior abort)?
* @j_wbufsize: maximum number of buffer_heads allowed in j_wbuf, the
* number that will fit in j_blocksize
* @j_last_sync_writer: most recent pid which did a synchronous write
+ * @j_average_commit_time: the average amount of time in nanoseconds it
+ * takes to commit a transaction to the disk.
* @j_private: An opaque pointer to fs-private information.
*/
* Journal head: identifies the first unused block in the journal.
* [j_state_lock]
*/
- unsigned long j_head;
+ unsigned int j_head;
/*
* Journal tail: identifies the oldest still-used block in the journal.
* [j_state_lock]
*/
- unsigned long j_tail;
+ unsigned int j_tail;
/*
* Journal free: how many free blocks are there in the journal?
* [j_state_lock]
*/
- unsigned long j_free;
+ unsigned int j_free;
/*
* Journal start and end: the block numbers of the first usable block
* and one beyond the last usable block in the journal. [j_state_lock]
*/
- unsigned long j_first;
- unsigned long j_last;
+ unsigned int j_first;
+ unsigned int j_last;
/*
* Device, blocksize and starting block offset for the location where we
*/
struct block_device *j_dev;
int j_blocksize;
- unsigned long j_blk_offset;
+ unsigned int j_blk_offset;
/*
* Device which holds the client fs. For internal journal this will be
struct buffer_head **j_wbuf;
int j_wbufsize;
+ /*
+ * this is the pid of the last person to run a synchronous operation
+ * through the journal.
+ */
pid_t j_last_sync_writer;
/*
+ * the average amount of time in nanoseconds it takes to commit a
+ * transaction to the disk. [j_state_lock]
+ */
+ u64 j_average_commit_time;
+
+ /*
* An opaque pointer to fs-private information. ext3 puts its
* superblock pointer here
*/
#define JFS_FLUSHED 0x008 /* The journal superblock has been flushed */
#define JFS_LOADED 0x010 /* The journal superblock has been loaded */
#define JFS_BARRIER 0x020 /* Use IDE barriers */
+#define JFS_ABORT_ON_SYNCDATA_ERR 0x040 /* Abort the journal on file
+ * data write error in ordered
+ * mode */
/*
* Function declarations for the journaling transaction and buffer
/* Log buffer allocation */
extern struct journal_head * journal_get_descriptor_buffer(journal_t *);
-int journal_next_log_block(journal_t *, unsigned long *);
+int journal_next_log_block(journal_t *, unsigned int *);
/* Commit management */
extern void journal_commit_transaction(journal_t *);
journal_write_metadata_buffer(transaction_t *transaction,
struct journal_head *jh_in,
struct journal_head **jh_out,
- unsigned long blocknr);
+ unsigned int blocknr);
/* Transaction locking */
extern void __wait_on_journal (journal_t *);
(journal_t *, unsigned long, unsigned long, unsigned long);
extern int journal_create (journal_t *);
extern int journal_load (journal_t *journal);
-extern void journal_destroy (journal_t *);
+extern int journal_destroy (journal_t *);
extern int journal_recover (journal_t *journal);
extern int journal_wipe (journal_t *, int);
extern int journal_skip_recovery (journal_t *);
extern int journal_errno (journal_t *);
extern void journal_ack_err (journal_t *);
extern int journal_clear_err (journal_t *);
-extern int journal_bmap(journal_t *, unsigned long, unsigned long *);
+extern int journal_bmap(journal_t *, unsigned int, unsigned int *);
extern int journal_force_commit(journal_t *);
/*
extern void journal_destroy_revoke(journal_t *);
extern int journal_revoke (handle_t *,
- unsigned long, struct buffer_head *);
+ unsigned int, struct buffer_head *);
extern int journal_cancel_revoke(handle_t *, struct journal_head *);
-extern void journal_write_revoke_records(journal_t *, transaction_t *);
+extern void journal_write_revoke_records(journal_t *,
+ transaction_t *, int);
/* Recovery revoke support */
-extern int journal_set_revoke(journal_t *, unsigned long, tid_t);
-extern int journal_test_revoke(journal_t *, unsigned long, tid_t);
+extern int journal_set_revoke(journal_t *, unsigned int, tid_t);
+extern int journal_test_revoke(journal_t *, unsigned int, tid_t);
extern void journal_clear_revoke(journal_t *);
extern void journal_switch_revoke_table(journal_t *journal);
int journal_force_commit_nested(journal_t *journal);
int log_wait_commit(journal_t *journal, tid_t tid);
int log_do_checkpoint(journal_t *journal);
+int journal_trans_will_send_data_barrier(journal_t *journal, tid_t tid);
void __log_wait_for_space(journal_t *journal);
extern void __journal_drop_transaction(journal_t *, transaction_t *);
#define jbd_ENOSYS() \
do { \
- printk (KERN_ERR "JBD unimplemented function %s\n", __FUNCTION__); \
+ printk (KERN_ERR "JBD unimplemented function %s\n", __func__); \
current->state = TASK_UNINTERRUPTIBLE; \
schedule(); \
} while (1)
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff