From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934268AbZLKEri (ORCPT ); Thu, 10 Dec 2009 23:47:38 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S933333AbZLKEqp (ORCPT ); Thu, 10 Dec 2009 23:46:45 -0500 Received: from kroah.org ([198.145.64.141]:37042 "EHLO coco.kroah.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762122AbZLKEgd (ORCPT ); Thu, 10 Dec 2009 23:36:33 -0500 X-Mailbox-Line: From linux@linux.site Thu Dec 10 20:28:09 2009 Message-Id: <20091211042809.446063479@linux.site> User-Agent: quilt/0.47-14.9 Date: Thu, 10 Dec 2009 20:25:44 -0800 From: Greg KH To: linux-kernel@vger.kernel.org, stable@kernel.org Cc: stable-review@kernel.org, torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, "Theodore Tso" , Greg Kroah-Hartman Subject: [66/90] ext4: dont update the superblock in ext4_statfs() References: <20091211042438.970725457@linux.site> Content-Disposition: inline; filename=0066-ext4-don-t-update-the-superblock-in-ext4_statfs.patch In-Reply-To: <20091211043502.GA17916@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 2.6.31-stable review patch. If anyone has any objections, please let us know. ------------------ (cherry picked from commit 3f8fb9490efbd300887470a2a880a64e04dcc3f5) commit a71ce8c6c9bf269b192f352ea555217815cf027e updated ext4_statfs() to update the on-disk superblock counters, but modified this buffer directly without any journaling of the change. This is one of the accesses that was causing the crc errors in journal replay as seen in kernel.org bugzilla #14354. Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman --- fs/ext4/super.c | 2 -- 1 file changed, 2 deletions(-) --- a/fs/ext4/super.c +++ b/fs/ext4/super.c @@ -3693,13 +3693,11 @@ static int ext4_statfs(struct dentry *de buf->f_blocks = ext4_blocks_count(es) - sbi->s_overhead_last; buf->f_bfree = percpu_counter_sum_positive(&sbi->s_freeblocks_counter) - percpu_counter_sum_positive(&sbi->s_dirtyblocks_counter); - ext4_free_blocks_count_set(es, buf->f_bfree); buf->f_bavail = buf->f_bfree - ext4_r_blocks_count(es); if (buf->f_bfree < ext4_r_blocks_count(es)) buf->f_bavail = 0; buf->f_files = le32_to_cpu(es->s_inodes_count); buf->f_ffree = percpu_counter_sum_positive(&sbi->s_freeinodes_counter); - es->s_free_inodes_count = cpu_to_le32(buf->f_ffree); buf->f_namelen = EXT4_NAME_LEN; fsid = le64_to_cpup((void *)es->s_uuid) ^ le64_to_cpup((void *)es->s_uuid + sizeof(u64));