From: Filipe David Borba Manana <fdmanana@gmail.com>
Date: Mon, 14 Oct 2013 23:12:27 +0000 (+0100)
Subject: Btrfs: fix btrfs_prev_leaf() previous key computation
X-Git-Tag: v3.13-rc1~85^2~42
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8b0d724d596f2ac1264ad830a04ef8e415be956;p=pandora-kernel.git

Btrfs: fix btrfs_prev_leaf() previous key computation

If we decrement the key type, we must reset its offset to the largest
possible offset (u64)-1. If we decrement the key's objectid, then we
must reset the key's type and offset to their largest possible values,
(u8)-1 and (u64)-1 respectively. Not doing so can make us miss an
items in the tree.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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