From: Liu Bo <bo.li.liu@oracle.com>
Date: Mon, 11 Mar 2013 09:20:58 +0000 (+0000)
Subject: Btrfs: get better concurrency for snapshot-aware defrag work
X-Git-Tag: v3.9-rc3~3^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a09a0a705dd6c80bc96b5e6f18dc103d4e1a7d63;p=pandora-kernel.git

Btrfs: get better concurrency for snapshot-aware defrag work

Using spinning case instead of blocking will result in better concurrency
overall.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
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