xen-blkback: move free persistent grants code
authorRoger Pau Monne <roger.pau@citrix.com>
Fri, 16 Nov 2012 18:26:48 +0000 (19:26 +0100)
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Mon, 26 Nov 2012 19:58:11 +0000 (14:58 -0500)
Move the code that frees persistent grants from the red-black tree
to a function. This will make it easier for other consumers to move
this to a common place.

Signed-off-by: Roger Pau Monné <roger.pau@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>

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