From: Bob Liu <bob.liu@oracle.com>
Date: Wed, 22 Jul 2015 06:40:10 +0000 (+0800)
Subject: xen-blkback: replace work_pending with work_busy in purge_persistent_gnt()
X-Git-Tag: omap-for-v4.3/fixes-merge-window~104^2^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=53bc7dc004fecf39e0ba70f2f8d120a1444315d3;p=pandora-kernel.git

xen-blkback: replace work_pending with work_busy in purge_persistent_gnt()

The BUG_ON() in purge_persistent_gnt() will be triggered when previous purge
work haven't finished.

There is a work_pending() before this BUG_ON, but it doesn't account if the work
is still currently running.

CC: stable@vger.kernel.org
Acked-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Bob Liu <bob.liu@oracle.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
---

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