tree 865900b191ed0e01f10d2f87e28c9e2ed56e5722
parent c8c42864f6193638eed136e0243f426a0b7f4bc2
author Chris Mason <chris.mason@oracle.com> 1238768058 -0400
committer Chris Mason <chris.mason@oracle.com> 1238768058 -0400

Btrfs: Optimize locking in btrfs_next_leaf()

btrfs_next_leaf was using blocking locks when it could have been using
faster spinning ones instead.  This adds a few extra checks around
the pieces that block and switches over to spinning locks.

Signed-off-by: Chris Mason <chris.mason@oracle.com>