From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753605AbcFRBDy (ORCPT ); Fri, 17 Jun 2016 21:03:54 -0400 Received: from mail.kernel.org ([198.145.29.136]:50426 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751087AbcFRBDw (ORCPT ); Fri, 17 Jun 2016 21:03:52 -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 3/3] f2fs: avoid latency-critical readahead of node pages Date: Fri, 17 Jun 2016 18:03:46 -0700 Message-Id: <20160618010346.17794-3-jaegeuk@kernel.org> X-Mailer: git-send-email 2.8.3 In-Reply-To: <20160618010346.17794-1-jaegeuk@kernel.org> References: <20160618010346.17794-1-jaegeuk@kernel.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The f2fs_map_blocks is very related to the performance, so let's avoid any latency to read ahead node pages. Signed-off-by: Jaegeuk Kim --- fs/f2fs/data.c | 2 +- fs/f2fs/file.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 0832528..ba4963f 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -652,7 +652,7 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, unsigned int maxblocks = map->m_len; struct dnode_of_data dn; struct f2fs_sb_info *sbi = F2FS_I_SB(inode); - int mode = create ? ALLOC_NODE : LOOKUP_NODE_RA; + int mode = create ? ALLOC_NODE : LOOKUP_NODE; pgoff_t pgofs, end_offset, end; int err = 0, ofs = 1; unsigned int ofs_in_node, last_ofs_in_node; diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index f1f78fb..4e220ba 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -356,7 +356,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t offset, int whence) for (; data_ofs < isize; data_ofs = (loff_t)pgofs << PAGE_SHIFT) { set_new_dnode(&dn, inode, NULL, NULL, 0); - err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE_RA); + err = get_dnode_of_data(&dn, pgofs, LOOKUP_NODE); if (err && err != -ENOENT) { goto fail; } else if (err == -ENOENT) { -- 2.8.3