From: alex chen Date: Tue, 10 Feb 2015 22:09:04 +0000 (-0800) Subject: ocfs2: add a mount option journal_async_commit on ocfs2 filesystem X-Git-Tag: fixes-v4.0-rc1~155^2~60 X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1dfeb768475dfded66bba03a1744c2e8141d3429;p=pandora-kernel.git 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 --- Reading git-diff-tree failed