From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754743AbcH0AyH (ORCPT ); Fri, 26 Aug 2016 20:54:07 -0400 Received: from mail.kernel.org ([198.145.29.136]:33338 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751671AbcH0AyG (ORCPT ); Fri, 26 Aug 2016 20:54:06 -0400 From: Jaegeuk Kim To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: 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> X-Mailer: git-send-email 2.8.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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