From: Stefan Behrens <sbehrens@giantdisaster.de>
Date: Fri, 4 May 2012 19:16:07 +0000 (-0400)
Subject: Btrfs: fix crash in scrub repair code when device is missing
X-Git-Tag: v3.4-rc6~2^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ea9947b4395fa34666086b2fa6f686e94903e047;p=pandora-kernel.git

Btrfs: fix crash in scrub repair code when device is missing

Fix that when scrub tries to repair an I/O or checksum error and one of
the devices containing the mirror is missing, it crashes in bio_add_page
because the bdev is a NULL pointer for missing devices.

Reported-by: Marco L. Crociani <marco.crociani@gmail.com>
Signed-off-by: Stefan Behrens <sbehrens@giantdisaster.de>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
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