From mboxrd@z Thu Jan 1 00:00:00 1970 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934075AbeAJGSi (ORCPT + 1 other); Wed, 10 Jan 2018 01:18:38 -0500 Received: from szxga07-in.huawei.com ([45.249.212.35]:36691 "EHLO huawei.com" rhost-flags-OK-FAIL-OK-FAIL) by vger.kernel.org with ESMTP id S933617AbeAJGSg (ORCPT ); Wed, 10 Jan 2018 01:18:36 -0500 From: Chao Yu To: CC: , , , Chao Yu Subject: [PATCH] f2fs: fix to cover f2fs_fiemap with inode_lock Date: Wed, 10 Jan 2018 14:18:06 +0800 Message-ID: <20180110061806.15744-1-yuchao0@huawei.com> X-Mailer: git-send-email 2.15.0.55.gc2ece9dc4de6 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.120.216.130] X-CFilter-Loop: Reflected Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: This patch fix to cover f2fs_fiemap with inode_lock in order to make the whole interface avoiding race with mapping change. Signed-off-by: Chao Yu --- fs/f2fs/data.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index d6302051a65d..330085d3adfc 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -1146,18 +1146,18 @@ int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *fieinfo, u32 flags = 0; int ret = 0; + inode_lock(inode); + ret = fiemap_check_flags(fieinfo, FIEMAP_FLAG_SYNC); if (ret) - return ret; + goto out; if (f2fs_has_inline_data(inode)) { ret = f2fs_inline_data_fiemap(inode, fieinfo, start, len); if (ret != -EAGAIN) - return ret; + goto out; } - inode_lock(inode); - if (logical_to_blk(inode, len) == 0) len = blk_to_logical(inode, 1); -- 2.15.0.55.gc2ece9dc4de6