From: Jiro SEKIBA Subject: [PATCH] nilfs: fix unprotected super_block flags modification in nilfs_error Date: Fri, 26 Feb 2010 14:33:32 +0900 Message-ID: <87eik8ims3.wl%jir@sekiba.com> Mime-Version: 1.0 (generated by SEMI 1.14.6 - "Maruoka") Return-path: Sender: linux-nilfs-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-ID: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-nilfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org Cc: Ryusuke Konishi , Ryusuke Konishi Hi, This is a trivial patch to protect super_block flags. super_block flags must be protected by the proper semaphore when modifying it. Signed-off-by: Jiro SEKIBA --- fs/nilfs2/super.c | 2 ++ 1 files changed, 2 insertions(+), 0 deletions(-) diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 8173fae..3ee02b8 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -110,7 +110,9 @@ void nilfs_error(struct super_block *sb, const char *function, if (nilfs_test_opt(sbi, ERRORS_RO)) { printk(KERN_CRIT "Remounting filesystem read-only\n"); + down_write(&nilfs->ns_super_sem); sb->s_flags |= MS_RDONLY; + up_write(&nilfs->ns_super_sem); } } -- 1.5.6.5 -- To unsubscribe from this list: send the line "unsubscribe linux-nilfs" in the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org More majordomo info at http://vger.kernel.org/majordomo-info.html