Btrfs: Defrag only leaves, and only when the parent node has a single objectid
authorChris Mason <chris.mason@oracle.com>
Mon, 15 Oct 2007 20:22:39 +0000 (16:22 -0400)
committerChris Mason <chris.mason@oracle.com>
Thu, 25 Sep 2008 15:03:57 +0000 (11:03 -0400)
This allows us to defrag huge directories, but skip the expensive defrag
case in more common usage, where it does not help as much.

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

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