From: Eric Sandeen <sandeen@redhat.com>
Date: Mon, 28 May 2012 18:17:25 +0000 (-0400)
Subject: ext4: force ro mount if ext4_setup_super() fails
X-Git-Tag: v3.5-rc1~16^2~17
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e84b6216467b84cd332c8e567bf5aa113fd2f38;p=pandora-kernel.git

ext4: force ro mount if ext4_setup_super() fails

If ext4_setup_super() fails i.e. due to a too-high revision,
the error is logged in dmesg but the fs is not mounted RO as
indicated.

Tested by:

# mkfs.ext4 -r 4 /dev/sdb6
# mount /dev/sdb6 /mnt/test
# dmesg | grep "too high"
[164919.759248] EXT4-fs (sdb6): revision level too high, forcing read-only mode
# grep sdb6 /proc/mounts
/dev/sdb6 /mnt/test2 ext4 rw,seclabel,relatime,data=ordered 0 0

Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
---

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