tree e93c46eb8def633533fe80032872f71b36fc03b8
parent 103e976616fe9c2a3e40764c979fa1a592274da2
author Jan Schmidt <list.btrfs@jan-o-sch.net> 1332520348 +0100
committer Jan Schmidt <list.btrfs@jan-o-sch.net> 1332852681 +0200

Btrfs: fix regression in scrub path resolving

In commit 4692cf58 we introduced new backref walking code for btrfs. This
assumes we're searching live roots, which requires a transaction context.
While scrubbing, however, we must not join a transaction because this could
deadlock with the commit path. Additionally, what scrub really wants to do
is resolving a logical address in the commit root it's currently checking.

This patch adds support for logical to path resolving on commit roots and
makes scrub use that.

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