From: Peng Tao <bergwolf@gmail.com>
Date: Mon, 13 Jul 2009 13:30:17 +0000 (-0400)
Subject: ext4: fix null handler of ioctls in no journal mode
X-Git-Tag: v2.6.31-rc3~1^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac046f1d6121ccdda6db66bd88acd52418f489b2;p=pandora-kernel.git

ext4: fix null handler of ioctls in no journal mode

The EXT4_IOC_GROUP_ADD and EXT4_IOC_GROUP_EXTEND ioctls should not
flush the journal in no_journal mode.  Otherwise, running resize2fs on
a mounted no_journal partition triggers the following error messages:

BUG: unable to handle kernel NULL pointer dereference at 00000014
IP: [<c039d282>] _spin_lock+0x8/0x19
*pde = 00000000
Oops: 0002 [#1] SMP

Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
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