sunrpc: move rq_splice_ok flag into rq_flags

Signed-off-by: Jeff Layton <jlayton@primarydata.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 0622d4f..8880ec8 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -1731,7 +1731,7 @@
 	argp->rqstp->rq_cachetype = cachethis ? RC_REPLBUFF : RC_NOCACHE;
 
 	if (readcount > 1 || max_reply > PAGE_SIZE - auth_slack)
-		argp->rqstp->rq_splice_ok = false;
+		clear_bit(RQ_SPLICE_OK, &argp->rqstp->rq_flags);
 
 	DECODE_TAIL;
 }
@@ -3253,10 +3253,10 @@
 
 	p = xdr_reserve_space(xdr, 8); /* eof flag and byte count */
 	if (!p) {
-		WARN_ON_ONCE(resp->rqstp->rq_splice_ok);
+		WARN_ON_ONCE(test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags));
 		return nfserr_resource;
 	}
-	if (resp->xdr.buf->page_len && resp->rqstp->rq_splice_ok) {
+	if (resp->xdr.buf->page_len && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags)) {
 		WARN_ON_ONCE(1);
 		return nfserr_resource;
 	}
@@ -3273,7 +3273,7 @@
 			goto err_truncate;
 	}
 
-	if (file->f_op->splice_read && resp->rqstp->rq_splice_ok)
+	if (file->f_op->splice_read && test_bit(RQ_SPLICE_OK, &resp->rqstp->rq_flags))
 		err = nfsd4_encode_splice_read(resp, read, file, maxcount);
 	else
 		err = nfsd4_encode_readv(resp, read, file, maxcount);