From: Bob Peterson <rpeterso@redhat.com>
Date: Tue, 28 Aug 2012 12:45:56 +0000 (-0400)
Subject: GFS2: Stop block extents at the end of bitmaps
X-Git-Tag: omap-for-v3.7-rc1/fixes-cpufreq-signed~108^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=0688a5ecea61a36ba12d17a18ab9f8712145cfa2;p=pandora-kernel.git

GFS2: Stop block extents at the end of bitmaps

This patch stops multiple block allocations if a nonzero
return code is received from gfs2_rbm_from_block. Without
this patch, if enough pressure is put on the file system,
you get a kernel warning quickly followed by:
BUG: unable to handle kernel NULL pointer dereference at (null)
IP: [<ffffffffa04f47e8>] gfs2_alloc_blocks+0x2c8/0x880 [gfs2]
With this patch, things run normally.

Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
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