From: Niu Yawei <yawei.niu@gmail.com>
Date: Sat, 2 Feb 2013 02:31:27 +0000 (-0500)
Subject: ext4: fix race in ext4_mb_add_n_trim()
X-Git-Tag: v3.9-rc1~64^2~36
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f1167009711032b0d747ec89a632a626c901a1ad;p=pandora-kernel.git

ext4: fix race in ext4_mb_add_n_trim()

In ext4_mb_add_n_trim(), lg_prealloc_lock should be taken when
changing the lg_prealloc_list.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@vger.kernel.org
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