From 1dfeb768475dfded66bba03a1744c2e8141d3429 Mon Sep 17 00:00:00 2001 From: alex chen Date: Tue, 10 Feb 2015 14:09:04 -0800 Subject: ocfs2: add a mount option journal_async_commit on ocfs2 filesystem Add a mount option to support JBD2 feature: JBD2_FEATURE_INCOMPAT_ASYNC_COMMIT. When this feature is opened, journal commit block can be written to disk without waiting for descriptor blocks, which can improve journal commit performance. This option will enable 'journal_checksum' internally. Using the fs_mark benchmark, using journal_async_commit shows a 50% improvement, the files per second go up from 215.2 to 317.5. test script: fs_mark -d /mnt/ocfs2/ -s 10240 -n 1000 default: FSUse% Count Size Files/sec App Overhead 0 1000 10240 215.2 17878 with journal_async_commit option: FSUse% Count Size Files/sec App Overhead 0 1000 10240 317.5 17881 Signed-off-by: Alex Chen Signed-off-by: Weiwei Wang Reviewed-by: Joseph Qi Reviewed-by: Mark Fasheh Cc: Joel Becker Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ocfs2/ocfs2.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'fs/ocfs2/ocfs2.h') diff --git a/fs/ocfs2/ocfs2.h b/fs/ocfs2/ocfs2.h index 7d6b7d090452..fdbcbfed529e 100644 --- a/fs/ocfs2/ocfs2.h +++ b/fs/ocfs2/ocfs2.h @@ -279,6 +279,8 @@ enum ocfs2_mount_options writes */ OCFS2_MOUNT_HB_NONE = 1 << 13, /* No heartbeat */ OCFS2_MOUNT_HB_GLOBAL = 1 << 14, /* Global heartbeat */ + + OCFS2_MOUNT_JOURNAL_ASYNC_COMMIT = 1 << 15, /* Journal Async Commit */ }; #define OCFS2_OSB_SOFT_RO 0x0001 -- cgit