From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753202AbcCLAO5 (ORCPT ); Fri, 11 Mar 2016 19:14:57 -0500 Received: from mail.kernel.org ([198.145.29.136]:44391 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753128AbcCLAOm (ORCPT ); Fri, 11 Mar 2016 19:14:42 -0500 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 2/2] f2fs: avoid writepage lock when many threads call fsync Date: Fri, 11 Mar 2016 16:14:37 -0800 Message-Id: <1457741677-67046-2-git-send-email-jaegeuk@kernel.org> X-Mailer: git-send-email 2.6.3 In-Reply-To: <1457741677-67046-1-git-send-email-jaegeuk@kernel.org> References: <1457741677-67046-1-git-send-email-jaegeuk@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org If many threads try to write small number of data and fsync, we should avoid writepages lock contention. Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index e5c762b..fb75699 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1400,7 +1400,8 @@ static int f2fs_write_data_pages(struct address_space *mapping, diff = nr_pages_to_write(sbi, DATA, wbc); - if (!S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_ALL) { + if (!S_ISDIR(inode->i_mode) && wbc->sync_mode == WB_SYNC_ALL && + !is_inode_flag_set(F2FS_I(inode), FI_NEED_IPU)) { mutex_lock(&sbi->writepages); locked = true; } -- 2.6.3