From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaegeuk Kim Subject: [PATCH 3/3] f2fs: use lock_buffer when changing superblock Date: Mon, 7 Dec 2015 14:53:25 -0800 Message-ID: <1449528805-89661-3-git-send-email-jaegeuk@kernel.org> References: <1449528805-89661-1-git-send-email-jaegeuk@kernel.org> Return-path: In-Reply-To: <1449528805-89661-1-git-send-email-jaegeuk@kernel.org> 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 When modifying sb contents, we need to use lock its buffer. Signed-off-by: Jaegeuk Kim --- fs/f2fs/file.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index a018ed3..a16dfe9 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1591,7 +1591,9 @@ static int f2fs_ioc_get_encryption_pwsalt(struct file *filp, unsigned long arg) return err; /* update superblock with uuid */ + lock_buffer(sbi->raw_super_buf); generate_random_uuid(sbi->raw_super->encrypt_pw_salt); + unlock_buffer(sbi->raw_super_buf); err = f2fs_commit_super(sbi, false); -- 2.4.9 (Apple Git-60)