From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Fri, 23 Mar 2012 16:24:19 +0000 (+0100)
Subject: Btrfs: check return value of btrfs_cow_block()
X-Git-Tag: v3.4-rc1~22^2~11^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=103e976616fe9c2a3e40764c979fa1a592274da2;p=pandora-kernel.git

Btrfs: check return value of btrfs_cow_block()

The two helper functions commit_cowonly_roots() and
create_pending_snapshot() failed to check the return value from
btrfs_cow_block(), which could at least in theory fail with -ENOSPC from
btrfs_alloc_free_block(). This commit adds the missing checks.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
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