From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Wed, 16 May 2012 16:25:47 +0000 (+0200)
Subject: Btrfs: add btrfs_search_old_slot
X-Git-Tag: v3.5-rc1~17^2^2~9
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5d9e75c41d11ca79b1d1ff6ed17c88c9047d1fea;p=pandora-kernel.git

Btrfs: add btrfs_search_old_slot

The tree modification log together with the current state of the tree gives
a consistent, old version of the tree. btrfs_search_old_slot is used to
search through this old version and return old (dummy!) extent buffers.
Naturally, this function cannot do any tree modifications.

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