SUNRPC: change svc_get() to return the svc.

It is common for 'get' functions to return the object that was 'got',
and there are a couple of places where users of svc_get() would be a
little simpler if svc_get() did that.

Make it so.
Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

fs/lockd/svc.c

@@ -430,14 +430,12 @@ static struct svc_serv *lockd_create_svc(void)
 	/*
 	 * Check whether we're already up and running.
 	 */
-	if (nlmsvc_rqst) {
+	if (nlmsvc_rqst)
 		/*
 		 * Note: increase service usage, because later in case of error
 		 * svc_destroy() will be called.
 		 */
-		svc_get(nlmsvc_rqst->rq_server);
-		return nlmsvc_rqst->rq_server;
-	}
+		return svc_get(nlmsvc_rqst->rq_server);
 
 	/*
 	 * Sanity check: if there's no pid,

fs/nfs/callback.c

@@ -266,14 +266,12 @@ static struct svc_serv *nfs_callback_create_svc(int minorversion)
 	/*
 	 * Check whether we're already up and running.
 	 */
-	if (cb_info->serv) {
+	if (cb_info->serv)
 		/*
 		 * Note: increase service usage, because later in case of error
 		 * svc_destroy() will be called.
 		 */
-		svc_get(cb_info->serv);
-		return cb_info->serv;
-	}
+		return svc_get(cb_info->serv);
 
 	switch (minorversion) {
 	case 0:

include/linux/sunrpc/svc.h

@@ -120,9 +120,10 @@ struct svc_serv {
  * change the number of threads.  Horrible, but there it is.
  * Should be called with the "service mutex" held.
  */
-static inline void svc_get(struct svc_serv *serv)
+static inline struct svc_serv *svc_get(struct svc_serv *serv)
 {
 	serv->sv_nrthreads++;
+	return serv;
 }
 
 /*