From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaegeuk Kim Subject: [PATCH] f2fs: merge WRITE bio into previous WRITE_SYNC Date: Fri, 26 Aug 2016 17:53:58 -0700 Message-ID: <20160827005358.91477-1-jaegeuk@kernel.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim List-Id: linux-f2fs-devel.lists.sourceforge.net This can avoid bio splits due to different op_flags. Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 7c8e219..c7c2022 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -267,6 +267,11 @@ void f2fs_submit_page_mbio(struct f2fs_io_info *fio) down_write(&io->io_rwsem); + /* WRITE can be merged into previous WRITE_SYNC */ + if (io->bio && io->last_block_in_bio == fio->new_blkaddr - 1 && + io->fio.op == fio->op && io->fio.op_flags == WRITE_SYNC) + fio->op_flags = WRITE_SYNC; + if (io->bio && (io->last_block_in_bio != fio->new_blkaddr - 1 || (io->fio.op != fio->op || io->fio.op_flags != fio->op_flags))) __submit_merged_bio(io); -- 2.8.3