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authorJan Kara <jack@suse.cz>2013-06-04 12:06:01 -0400
committerTheodore Ts'o <tytso@mit.edu>2013-06-04 12:06:01 -0400
commite5a120aeb57f40ae568a5ca1dd6ace53d0213582 (patch)
tree4381bec9a9ef322a7feb8c29ff0912b8edbf0407 /include/linux/jbd2.h
parentf5113effc2a2ee6b86a4b345ce557353dcbcfffe (diff)
jbd2: remove journal_head from descriptor buffers
Similarly as for metadata buffers, also log descriptor buffers don't really need the journal head. So strip it and remove BJ_LogCtl list. Reviewed-by: Zheng Liu <wenqing.lz@taobao.com> Signed-off-by: Jan Kara <jack@suse.cz> Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Diffstat (limited to 'include/linux/jbd2.h')
-rw-r--r--include/linux/jbd2.h19
1 files changed, 7 insertions, 12 deletions
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index 57210844b22..b7dc40da99e 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -531,12 +531,6 @@ struct transaction_s
struct journal_head *t_shadow_list;
/*
- * Doubly-linked circular list of control buffers being written to the
- * log. [j_list_lock]
- */
- struct journal_head *t_log_list;
-
- /*
* List of inodes whose data we've modified in data=ordered mode.
* [j_list_lock]
*/
@@ -995,7 +989,7 @@ static inline void jbd2_unfile_log_bh(struct buffer_head *bh)
}
/* Log buffer allocation */
-extern struct journal_head * jbd2_journal_get_descriptor_buffer(journal_t *);
+struct buffer_head *jbd2_journal_get_descriptor_buffer(journal_t *journal);
int jbd2_journal_next_log_block(journal_t *, unsigned long long *);
int jbd2_journal_get_log_tail(journal_t *journal, tid_t *tid,
unsigned long *block);
@@ -1179,8 +1173,10 @@ extern int jbd2_journal_init_revoke_caches(void);
extern void jbd2_journal_destroy_revoke(journal_t *);
extern int jbd2_journal_revoke (handle_t *, unsigned long long, struct buffer_head *);
extern int jbd2_journal_cancel_revoke(handle_t *, struct journal_head *);
-extern void jbd2_journal_write_revoke_records(journal_t *,
- transaction_t *, int);
+extern void jbd2_journal_write_revoke_records(journal_t *journal,
+ transaction_t *transaction,
+ struct list_head *log_bufs,
+ int write_op);
/* Recovery revoke support */
extern int jbd2_journal_set_revoke(journal_t *, unsigned long long, tid_t);
@@ -1288,9 +1284,8 @@ static inline int jbd_space_needed(journal_t *journal)
#define BJ_Metadata 1 /* Normal journaled metadata */
#define BJ_Forget 2 /* Buffer superseded by this transaction */
#define BJ_Shadow 3 /* Buffer contents being shadowed to the log */
-#define BJ_LogCtl 4 /* Buffer contains log descriptors */
-#define BJ_Reserved 5 /* Buffer is reserved for access by journal */
-#define BJ_Types 6
+#define BJ_Reserved 4 /* Buffer is reserved for access by journal */
+#define BJ_Types 5
extern int jbd_blocks_per_page(struct inode *inode);