sunrpc: move rq_usedeferral flag to rq_flags

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/nfs4proc.c

@@ -1370,7 +1370,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
 	 * Don't use the deferral mechanism for NFSv4; compounds make it
 	 * too hard to avoid non-idempotency problems.
 	 */
-	rqstp->rq_usedeferral = false;
+	clear_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
 
 	/*
 	 * According to RFC3010, this takes precedence over all other errors.
@@ -1486,7 +1486,7 @@ nfsd4_proc_compound(struct svc_rqst *rqstp,
 	BUG_ON(cstate->replay_owner);
 out:
 	/* Reset deferral mechanism for RPC deferrals */
-	rqstp->rq_usedeferral = true;
+	set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
 	dprintk("nfsv4 compound returned %d\n", ntohl(status));
 	return status;
 }

include/linux/sunrpc/svc.h

@@ -236,7 +236,6 @@ struct svc_rqst {
 	struct svc_cred		rq_cred;	/* auth info */
 	void *			rq_xprt_ctxt;	/* transport specific context ptr */
 	struct svc_deferred_req*rq_deferred;	/* deferred request we are replaying */
-	bool			rq_usedeferral;	/* use deferral */
 
 	size_t			rq_xprt_hlen;	/* xprt header len */
 	struct xdr_buf		rq_arg;
@@ -255,6 +254,7 @@ struct svc_rqst {
 	u32			rq_prot;	/* IP protocol */
 #define	RQ_SECURE	(0)			/* secure port */
 #define	RQ_LOCAL	(1)			/* local request */
+#define	RQ_USEDEFERRAL	(2)			/* use deferral */
 	unsigned long		rq_flags;	/* flags field */
 
 	void *			rq_argp;	/* decoded arguments */

include/trace/events/sunrpc.h

@@ -415,7 +415,8 @@ TRACE_EVENT(xs_tcp_data_recv,
 #define show_rqstp_flags(flags)						\
 	__print_flags(flags, "|",					\
 		{ (1UL << RQ_SECURE),		"RQ_SECURE"},		\
-		{ (1UL << RQ_LOCAL),	"RQ_LOCAL"})
+		{ (1UL << RQ_LOCAL),		"RQ_LOCAL"},		\
+		{ (1UL << RQ_USEDEFERRAL),	"RQ_USEDEFERRAL"})
 
 TRACE_EVENT(svc_recv,
 	TP_PROTO(struct svc_rqst *rqst, int status),

net/sunrpc/svc.c

@@ -1090,7 +1090,7 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
 	/* Will be turned off only in gss privacy case: */
 	rqstp->rq_splice_ok = true;
 	/* Will be turned off only when NFSv4 Sessions are used */
-	rqstp->rq_usedeferral = true;
+	set_bit(RQ_USEDEFERRAL, &rqstp->rq_flags);
 	rqstp->rq_dropme = false;
 
 	/* Setup reply header */

net/sunrpc/svc_xprt.c

@@ -1081,7 +1081,7 @@ static struct cache_deferred_req *svc_defer(struct cache_req *req)
 	struct svc_rqst *rqstp = container_of(req, struct svc_rqst, rq_chandle);
 	struct svc_deferred_req *dr;
 
-	if (rqstp->rq_arg.page_len || !rqstp->rq_usedeferral)
+	if (rqstp->rq_arg.page_len || !test_bit(RQ_USEDEFERRAL, &rqstp->rq_flags))
 		return NULL; /* if more than a page, give up FIXME */
 	if (rqstp->rq_deferred) {
 		dr = rqstp->rq_deferred;