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[PATCH 4.4 122/342] dm space map metadata: remove unused variable in brb_pop()

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  [PATCH 4.4 122/342] dm space map metadata: remove unused variable in brb_pop() Greg Kroah-Hartman <gregkh@linuxfoundation.org> - 2016-03-02 02:00 +0100

#1347352 — [PATCH 4.4 122/342] dm space map metadata: remove unused variable in brb_pop()

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Mike Snitzer <snitzer@redhat.com>

commit 512167788a6fe9481a33a3cce5f80b684631a1bb upstream.

Remove the unused struct block_op pointer that was inadvertantly
introduced, via cut-and-paste of previous brb_op() code, as part of
commit 50dd842ad.

(Cc'ing stable@ because commit 50dd842ad did)

Fixes: 50dd842ad ("dm space map metadata: fix ref counting bug when bootstrapping a new space map")
Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 drivers/md/persistent-data/dm-space-map-metadata.c |    3 ---
 1 file changed, 3 deletions(-)

--- a/drivers/md/persistent-data/dm-space-map-metadata.c
+++ b/drivers/md/persistent-data/dm-space-map-metadata.c
@@ -152,12 +152,9 @@ static int brb_peek(struct bop_ring_buff
 
 static int brb_pop(struct bop_ring_buffer *brb)
 {
-	struct block_op *bop;
-
 	if (brb_empty(brb))
 		return -ENODATA;
 
-	bop = brb->bops + brb->begin;
 	brb->begin = brb_next(brb, brb->begin);
 
 	return 0;

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