sunrpc: move rq_cachetype field to better optimize space

There are a couple of holes in the svc_rqst field on x86_64. Move the
rq_cachetype to a different location to eliminate both of them.
Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

include/linux/sunrpc/svc.h

@@ -252,6 +252,7 @@ struct svc_rqst {
 	u32			rq_vers;	/* program version */
 	u32			rq_proc;	/* procedure number */
 	u32			rq_prot;	/* IP protocol */
+	int			rq_cachetype;	/* catering to nfsd */
 #define	RQ_SECURE	(0)			/* secure port */
 #define	RQ_LOCAL	(1)			/* local request */
 #define	RQ_USEDEFERRAL	(2)			/* use deferral */
@@ -278,7 +279,6 @@ struct svc_rqst {
 	/* Catering to nfsd */
 	struct auth_domain *	rq_client;	/* RPC peer info */
 	struct auth_domain *	rq_gssclient;	/* "gss/"-style peer info */
-	int			rq_cachetype;
 	struct svc_cacherep *	rq_cacherep;	/* cache info */
 	struct task_struct	*rq_task;	/* service thread */
 };