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authorJan Kara <jack@suse.cz>2006-06-23 02:06:05 -0700
committerLinus Torvalds <torvalds@g5.osdl.org>2006-06-23 07:43:08 -0700
commit78ce89c92bc6eaf5933b5664bff64253a7103bd7 (patch)
treeedaadf283127c1a74bfe3aa7b165c1cf45d14347 /include/linux/jbd.h
parentcdaad343b561cdeb38b0578bb038eb5e87ed5551 (diff)
downloadblackbird-op-linux-78ce89c92bc6eaf5933b5664bff64253a7103bd7.tar.gz
blackbird-op-linux-78ce89c92bc6eaf5933b5664bff64253a7103bd7.zip
[PATCH] JBD: split checkpoint lists
Split the checkpoint list of the transaction into two lists. In the first list we keep the buffers that need to be submitted for IO. In the second list are kept buffers that were already submitted and we just have to wait for the IO to complete. This should simplify a handling of checkpoint lists a bit and can eventually be also a performance gain. Signed-off-by: Jan Kara <jack@suse.cz> Cc: Mark Fasheh <mark.fasheh@oracle.com> Cc: "Stephen C. Tweedie" <sct@redhat.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/jbd.h')
-rw-r--r--include/linux/jbd.h8
1 files changed, 7 insertions, 1 deletions
diff --git a/include/linux/jbd.h b/include/linux/jbd.h
index 6a425e370cb3..20eb34403d0c 100644
--- a/include/linux/jbd.h
+++ b/include/linux/jbd.h
@@ -501,6 +501,12 @@ struct transaction_s
struct journal_head *t_checkpoint_list;
/*
+ * Doubly-linked circular list of all buffers submitted for IO while
+ * checkpointing. [j_list_lock]
+ */
+ struct journal_head *t_checkpoint_io_list;
+
+ /*
* Doubly-linked circular list of temporary buffers currently undergoing
* IO in the log [j_list_lock]
*/
@@ -849,7 +855,7 @@ extern void journal_commit_transaction(journal_t *);
/* Checkpoint list management */
int __journal_clean_checkpoint_list(journal_t *journal);
-void __journal_remove_checkpoint(struct journal_head *);
+int __journal_remove_checkpoint(struct journal_head *);
void __journal_insert_checkpoint(struct journal_head *, transaction_t *);
/* Buffer IO */
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