From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Mon, 11 Jun 2012 06:29:29 +0000 (+0200)
Subject: Btrfs: add btrfs_next_old_leaf
X-Git-Tag: v3.5-rc3~18^2~6^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3d7806eca43e73a9721d2e09369200ed93036bd0;p=pandora-kernel.git

Btrfs: add btrfs_next_old_leaf

To make sense of the tree mod log, the backref walker not only needs
btrfs_search_old_slot, but it also called btrfs_next_leaf, which in turn was
calling btrfs_search_slot. This obviously didn't give the correct result.

This commit adds btrfs_next_old_leaf, a drop-in replacement for
btrfs_next_leaf with a time_seq parameter. If it is zero, it behaves exactly
like btrfs_next_leaf. If it is non-zero, it will use btrfs_search_old_slot
with this time_seq parameter.

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