ceph: update for removal of kref_set

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Sage Weil <sage@newdream.net>
diff --git a/fs/ceph/msgpool.c b/fs/ceph/msgpool.c
index ca3b44a..030297f 100644
--- a/fs/ceph/msgpool.c
+++ b/fs/ceph/msgpool.c
@@ -170,7 +170,7 @@
 		msg->front.iov_len = pool->front_len;
 		msg->hdr.front_len = cpu_to_le32(pool->front_len);
 
-		kref_set(&msg->kref, 1);  /* retake a single ref */
+		kref_init(&msg->kref);  /* retake a single ref */
 		list_add(&msg->list_head, &pool->msgs);
 		pool->num++;
 		dout("msgpool_put %p reclaim %p, now %d/%d\n", pool, msg,