From: Alex Elder <elder@dreamhost.com>
Date: Thu, 8 Nov 2012 14:01:39 +0000 (-0600)
Subject: rbd: end request on error in rbd_do_request() caller
X-Git-Tag: v3.12-rc1~1044^2~24^2~59^2~39
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=cd323ac0eb433b14cbb270bfc5a82f308f2662de;p=kernel%2Fkernel-generic.git

rbd: end request on error in rbd_do_request() caller

Only one of the three callers of rbd_do_request() provide a
collection structure to aggregate status.

If an error occurs in rbd_do_request(), have the caller
take care of calling rbd_coll_end_req() if necessary in
that one spot.

Signed-off-by: Alex Elder <elder@inktank.com>
Reviewed-by: Josh Durgin <josh.durgin@inktank.com>
---

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 738d1e4..21468d0 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1126,12 +1126,8 @@ static int rbd_do_request(struct request *rq,
 	struct ceph_osd_client *osdc;
 
 	rbd_req = kzalloc(sizeof(*rbd_req), GFP_NOIO);
-	if (!rbd_req) {
-		if (coll)
-			rbd_coll_end_req_index(rq, coll, coll_index,
-					       (s32)-ENOMEM, len);
+	if (!rbd_req)
 		return -ENOMEM;
-	}
 
 	if (coll) {
 		rbd_req->coll = coll;
@@ -1206,7 +1202,6 @@ done_err:
 	bio_chain_put(rbd_req->bio);
 	ceph_osdc_put_request(osd_req);
 done_pages:
-	rbd_coll_end_req(rbd_req, (s32)ret, len);
 	kfree(rbd_req);
 	return ret;
 }
@@ -1359,7 +1354,9 @@ static int rbd_do_op(struct request *rq,
 			     ops,
 			     coll, coll_index,
 			     rbd_req_cb, 0, NULL);
-
+	if (ret < 0)
+		rbd_coll_end_req_index(rq, coll, coll_index,
+					(s32)ret, seg_len);
 	rbd_destroy_ops(ops);
 done:
 	kfree(seg_name);