From: Eric Whitney <enwlinux@gmail.com>
Date: Mon, 6 Jan 2014 19:00:23 +0000 (-0500)
Subject: ext4: fix bigalloc regression
X-Git-Tag: v3.13-rc8~15^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=d0abafac8c9162f39c4f6b2f8141b772a09b3770;p=pandora-kernel.git

ext4: fix bigalloc regression

Commit f5a44db5d2 introduced a regression on filesystems created with
the bigalloc feature (cluster size > blocksize).  It causes xfstests
generic/006 and /013 to fail with an unexpected JBD2 failure and
transaction abort that leaves the test file system in a read only state.
Other xfstests run on bigalloc file systems are likely to fail as well.

The cause is the accidental use of a cluster mask where a cluster
offset was needed in ext4_ext_map_blocks().

Signed-off-by: Eric Whitney <enwlinux@gmail.com>
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