1 files changed, 24 insertions, 24 deletions

diff --git a/drivers/block/rbd.c b/drivers/block/rbd.c
index 9d21fcd7e188..28b62367ff93 100644
--- a/drivers/block/rbd.c
+++ b/drivers/block/rbd.c
@@ -1113,20 +1113,11 @@ static int rbd_do_request(struct request *rq,
 			  struct ceph_osd_request **linger_req,
 			  u64 *ver)
 {
+	struct ceph_osd_client *osdc;
 	struct ceph_osd_request *osd_req;
-	int ret;
+	struct rbd_request *rbd_req = NULL;
 	struct timespec mtime = CURRENT_TIME;
-	struct rbd_request *rbd_req;
-	struct ceph_osd_client *osdc;
-
-	rbd_req = kzalloc(sizeof(*rbd_req), GFP_NOIO);
-	if (!rbd_req)
-		return -ENOMEM;
-
-	if (coll) {
-		rbd_req->coll = coll;
-		rbd_req->coll_index = coll_index;
-	}
+	int ret;
 
 	dout("rbd_do_request object_name=%s ofs=%llu len=%llu coll=%p[%d]\n",
 		object_name, (unsigned long long) ofs,
@@ -1134,10 +1125,8 @@ static int rbd_do_request(struct request *rq,
 
 	osdc = &rbd_dev->rbd_client->client->osdc;
 	osd_req = ceph_osdc_alloc_request(osdc, snapc, 1, false, GFP_NOIO);
-	if (!osd_req) {
-		ret = -ENOMEM;
-		goto done_pages;
-	}
+	if (!osd_req)
+		return -ENOMEM;
 
 	osd_req->r_flags = flags;
 	osd_req->r_pages = pages;
@@ -1145,13 +1134,22 @@ static int rbd_do_request(struct request *rq,
 		osd_req->r_bio = bio;
 		bio_get(osd_req->r_bio);
 	}
-	osd_req->r_callback = rbd_cb;
 
-	rbd_req->rq = rq;
-	rbd_req->bio = bio;
-	rbd_req->pages = pages;
-	rbd_req->len = len;
+	if (rbd_cb) {
+		ret = -ENOMEM;
+		rbd_req = kmalloc(sizeof(*rbd_req), GFP_NOIO);
+		if (!rbd_req)
+			goto done_osd_req;
+
+		rbd_req->rq = rq;
+		rbd_req->bio = bio;
+		rbd_req->pages = pages;
+		rbd_req->len = len;
+		rbd_req->coll = coll;
+		rbd_req->coll_index = coll ? coll_index : 0;
+	}
 
+	osd_req->r_callback = rbd_cb;
 	osd_req->r_priv = rbd_req;
 
 	strncpy(osd_req->r_oid, object_name, sizeof(osd_req->r_oid));
@@ -1193,10 +1191,12 @@ static int rbd_do_request(struct request *rq,
 	return ret;
 
 done_err:
-	bio_chain_put(rbd_req->bio);
-	ceph_osdc_put_request(osd_req);
-done_pages:
+	if (bio)
+		bio_chain_put(osd_req->r_bio);
 	kfree(rbd_req);
+done_osd_req:
+	ceph_osdc_put_request(osd_req);
+
 	return ret;
 }