tree 418a67d8d2de13739f3b14518917c8aaadafe3b8
parent 2b20982e3154266106573beac2a4d4ba57a2789a
author Josef Bacik <josef@redhat.com> 1291817711 -0500
committer Josef Bacik <josef@redhat.com> 1291921033 -0500

Btrfs: do not do fast caching if we are allocating blocks for tree_root

Since the fast caching uses normal tree locking, we can possibly deadlock if we
get to the caching via a btrfs_search_slot() on the tree_root.  So just check to
see if the root we are on is the tree root, and just don't do the fast caching.

Reported-by: Sage Weil <sage@newdream.net>
Signed-off-by: Josef Bacik <josef@redhat.com>