Define op_iattr for nfsd4_open instead using macro

Signed-off-by: Kinglong Mee <kinglongmee@gmail.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>

fs/nfsd/xdr4.h

@@ -228,7 +228,7 @@ struct nfsd4_open {
 	u32		op_create;     	    /* request */
 	u32		op_createmode;      /* request */
 	u32		op_bmval[3];        /* request */
-	struct iattr	iattr;              /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
+	struct iattr	op_iattr;           /* UNCHECKED4, GUARDED4, EXCLUSIVE4_1 */
 	nfs4_verifier	op_verf __attribute__((aligned(32)));
 					    /* EXCLUSIVE4 */
 	clientid_t	op_clientid;        /* request */
@@ -250,7 +250,6 @@ struct nfsd4_open {
 	struct nfs4_acl *op_acl;
 	struct xdr_netobj op_label;
 };
-#define op_iattr	iattr
 
 struct nfsd4_open_confirm {
 	stateid_t	oc_req_stateid		/* request */;