From: Eric Sandeen <sandeen@redhat.com>
Date: Thu, 31 Jan 2013 00:55:01 +0000 (+0000)
Subject: btrfs: ensure we don't overrun devices_info[] in __btrfs_alloc_chunk
X-Git-Tag: v3.9-rc1~17^2~29^2~33
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=063d006fa06fbf73fab370921120380333a33e85;p=pandora-kernel.git

btrfs: ensure we don't overrun devices_info[] in __btrfs_alloc_chunk

WARN_ON isn't enough, we need to stop the loop if for any reason
we would overrun the devices_info array.

I tried to track down the connection between the length of
the alloc_devices list and the rw_devices counter but
it wasn't immediately obvious, so be defensive about it.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---

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