diff --git a/fs/lockd/svc4proc.c b/fs/lockd/svc4proc.c
index 3e4cba029d3d..804744f7528c 100644
--- a/fs/lockd/svc4proc.c
+++ b/fs/lockd/svc4proc.c
@@ -496,7 +496,7 @@ struct nlm_void			{ int dummy; };
 
 #define PROC(name, xargt, xrest, argt, rest, respsize)	\
  { .pc_func	= nlm4svc_proc_##name,	\
-   .pc_decode	= (kxdrproc_t) nlm4svc_decode_##xargt,	\
+   .pc_decode	= nlm4svc_decode_##xargt,	\
    .pc_encode	= (kxdrproc_t) nlm4svc_encode_##xrest,	\
    .pc_release	= NULL,					\
    .pc_argsize	= sizeof(struct nlm_##argt),		\
diff --git a/fs/lockd/svcproc.c b/fs/lockd/svcproc.c
index 3add50661fab..204a698f7d41 100644
--- a/fs/lockd/svcproc.c
+++ b/fs/lockd/svcproc.c
@@ -538,7 +538,7 @@ struct nlm_void			{ int dummy; };
 
 #define PROC(name, xargt, xrest, argt, rest, respsize)	\
  { .pc_func	= nlmsvc_proc_##name,			\
-   .pc_decode	= (kxdrproc_t) nlmsvc_decode_##xargt,	\
+   .pc_decode	= nlmsvc_decode_##xargt,		\
    .pc_encode	= (kxdrproc_t) nlmsvc_encode_##xrest,	\
    .pc_release	= NULL,					\
    .pc_argsize	= sizeof(struct nlm_##argt),		\
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 5b651daad518..b57af63fba56 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -182,8 +182,9 @@ nlm_encode_testres(__be32 *p, struct nlm_res *resp)
  * First, the server side XDR functions
  */
 int
-nlmsvc_decode_testargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlmsvc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm_decode_cookie(p, &argp->cookie)))
@@ -207,8 +208,9 @@ nlmsvc_encode_testres(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlmsvc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlmsvc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm_decode_cookie(p, &argp->cookie)))
@@ -227,8 +229,9 @@ nlmsvc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlmsvc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlmsvc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm_decode_cookie(p, &argp->cookie)))
@@ -243,8 +246,10 @@ nlmsvc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
+
 	if (!(p = nlm_decode_cookie(p, &argp->cookie))
 	 || !(p = nlm_decode_lock(p, &argp->lock)))
 		return 0;
@@ -253,8 +258,9 @@ nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_lock	*lock = &argp->lock;
 
 	memset(lock, 0, sizeof(*lock));
@@ -293,8 +299,9 @@ nlmsvc_encode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlmsvc_decode_notify(struct svc_rqst *rqstp, __be32 *p, struct nlm_args *argp)
+nlmsvc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_lock	*lock = &argp->lock;
 
 	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
@@ -305,8 +312,10 @@ nlmsvc_decode_notify(struct svc_rqst *rqstp, __be32 *p, struct nlm_args *argp)
 }
 
 int
-nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
+nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_reboot *argp = rqstp->rq_argp;
+
 	if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
 		return 0;
 	argp->state = ntohl(*p++);
@@ -316,8 +325,10 @@ nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
 }
 
 int
-nlmsvc_decode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
+nlmsvc_decode_res(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_res *resp = rqstp->rq_argp;
+
 	if (!(p = nlm_decode_cookie(p, &resp->cookie)))
 		return 0;
 	resp->status = *p++;
@@ -325,7 +336,7 @@ nlmsvc_decode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlmsvc_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
+nlmsvc_decode_void(struct svc_rqst *rqstp, __be32 *p)
 {
 	return xdr_argsize_check(rqstp, p);
 }
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index dfa4789cd460..46e18598a15c 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -179,8 +179,9 @@ nlm4_encode_testres(__be32 *p, struct nlm_res *resp)
  * First, the server side XDR functions
  */
 int
-nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
@@ -204,8 +205,9 @@ nlm4svc_encode_testres(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
@@ -224,8 +226,9 @@ nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	u32	exclusive;
 
 	if (!(p = nlm4_decode_cookie(p, &argp->cookie)))
@@ -240,8 +243,10 @@ nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
+
 	if (!(p = nlm4_decode_cookie(p, &argp->cookie))
 	 || !(p = nlm4_decode_lock(p, &argp->lock)))
 		return 0;
@@ -250,8 +255,9 @@ nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
 }
 
 int
-nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p, nlm_args *argp)
+nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_lock	*lock = &argp->lock;
 
 	memset(lock, 0, sizeof(*lock));
@@ -290,8 +296,9 @@ nlm4svc_encode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p, struct nlm_args *argp)
+nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_args *argp = rqstp->rq_argp;
 	struct nlm_lock	*lock = &argp->lock;
 
 	if (!(p = xdr_decode_string_inplace(p, &lock->caller,
@@ -302,8 +309,10 @@ nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p, struct nlm_args *argp)
 }
 
 int
-nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp)
+nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_reboot *argp = rqstp->rq_argp;
+
 	if (!(p = xdr_decode_string_inplace(p, &argp->mon, &argp->len, SM_MAXSTRLEN)))
 		return 0;
 	argp->state = ntohl(*p++);
@@ -313,8 +322,10 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p, struct nlm_reboot *argp
 }
 
 int
-nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
+nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nlm_res *resp = rqstp->rq_argp;
+
 	if (!(p = nlm4_decode_cookie(p, &resp->cookie)))
 		return 0;
 	resp->status = *p++;
@@ -322,7 +333,7 @@ nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p, struct nlm_res *resp)
 }
 
 int
-nlm4svc_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
+nlm4svc_decode_void(struct svc_rqst *rqstp, __be32 *p)
 {
 	return xdr_argsize_check(rqstp, p);
 }
diff --git a/fs/nfs/callback_xdr.c b/fs/nfs/callback_xdr.c
index 5a14bdaa5986..23ecbf7a40c1 100644
--- a/fs/nfs/callback_xdr.c
+++ b/fs/nfs/callback_xdr.c
@@ -58,7 +58,7 @@ static __be32 nfs4_callback_null(struct svc_rqst *rqstp)
 	return htonl(NFS4_OK);
 }
 
-static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
+static int nfs4_decode_void(struct svc_rqst *rqstp, __be32 *p)
 {
 	return xdr_argsize_check(rqstp, p);
 }
@@ -998,7 +998,7 @@ static struct callback_op callback_ops[] = {
 static struct svc_procedure nfs4_callback_procedures1[] = {
 	[CB_NULL] = {
 		.pc_func = nfs4_callback_null,
-		.pc_decode = (kxdrproc_t)nfs4_decode_void,
+		.pc_decode = nfs4_decode_void,
 		.pc_encode = (kxdrproc_t)nfs4_encode_void,
 		.pc_xdrressize = 1,
 	},
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 302441027f50..bcfdaa83ee6c 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -182,9 +182,10 @@ static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
 /*
  * XDR decode functions
  */
-static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd3_getaclargs *argp)
+static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_getaclargs *argp = rqstp->rq_argp;
+
 	p = nfs2svc_decode_fh(p, &argp->fh);
 	if (!p)
 		return 0;
@@ -194,9 +195,9 @@ static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 
-static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd3_setaclargs *argp)
+static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_setaclargs *argp = rqstp->rq_argp;
 	struct kvec *head = rqstp->rq_arg.head;
 	unsigned int base;
 	int n;
@@ -220,18 +221,20 @@ static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
 	return (n > 0);
 }
 
-static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd_fhandle *argp)
+static int nfsaclsvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_fhandle *argp = rqstp->rq_argp;
+
 	p = nfs2svc_decode_fh(p, &argp->fh);
 	if (!p)
 		return 0;
 	return xdr_argsize_check(rqstp, p);
 }
 
-static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd3_accessargs *argp)
+static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_accessargs *argp = rqstp->rq_argp;
+
 	p = nfs2svc_decode_fh(p, &argp->fh);
 	if (!p)
 		return 0;
@@ -351,7 +354,7 @@ struct nfsd3_voidargs { int dummy; };
 #define PROC(name, argt, rest, relt, cache, respsize)			\
 {									\
 	.pc_func	= nfsacld_proc_##name,				\
-	.pc_decode	= (kxdrproc_t) nfsaclsvc_decode_##argt##args,	\
+	.pc_decode	= nfsaclsvc_decode_##argt##args,		\
 	.pc_encode	= (kxdrproc_t) nfsaclsvc_encode_##rest##res,	\
 	.pc_release	= nfsaclsvc_release_##relt,	\
 	.pc_argsize	= sizeof(struct nfsd3_##argt##args),		\
diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
index 56cdff4e954c..4e68d6b5f409 100644
--- a/fs/nfsd/nfs3acl.c
+++ b/fs/nfsd/nfs3acl.c
@@ -124,9 +124,10 @@ out:
 /*
  * XDR decode functions
  */
-static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd3_getaclargs *args)
+static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_getaclargs *args = rqstp->rq_argp;
+
 	p = nfs3svc_decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -136,9 +137,9 @@ static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 
-static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p,
-		struct nfsd3_setaclargs *args)
+static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_setaclargs *args = rqstp->rq_argp;
 	struct kvec *head = rqstp->rq_arg.head;
 	unsigned int base;
 	int n;
@@ -241,7 +242,7 @@ struct nfsd3_voidargs { int dummy; };
 #define PROC(name, argt, rest, relt, cache, respsize)			\
 {									\
 	.pc_func	= nfsd3_proc_##name,				\
-	.pc_decode	= (kxdrproc_t) nfs3svc_decode_##argt##args,	\
+	.pc_decode	= nfs3svc_decode_##argt##args,			\
 	.pc_encode	= (kxdrproc_t) nfs3svc_encode_##rest##res,	\
 	.pc_release	= nfs3svc_release_##relt,			\
 	.pc_argsize	= sizeof(struct nfsd3_##argt##args),		\
diff --git a/fs/nfsd/nfs3proc.c b/fs/nfsd/nfs3proc.c
index f0cccc0768ce..ed83e8a9e7b4 100644
--- a/fs/nfsd/nfs3proc.c
+++ b/fs/nfsd/nfs3proc.c
@@ -685,7 +685,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_GETATTR] = {
 		.pc_func = nfsd3_proc_getattr,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
+		.pc_decode = nfs3svc_decode_fhandleargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_attrstatres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
@@ -695,7 +695,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_SETATTR] = {
 		.pc_func = nfsd3_proc_setattr,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_sattrargs,
+		.pc_decode = nfs3svc_decode_sattrargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_sattrargs),
@@ -705,7 +705,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_LOOKUP] = {
 		.pc_func = nfsd3_proc_lookup,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
+		.pc_decode = nfs3svc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_diropres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_diropargs),
@@ -715,7 +715,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_ACCESS] = {
 		.pc_func = nfsd3_proc_access,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_accessargs,
+		.pc_decode = nfs3svc_decode_accessargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_accessres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_accessargs),
@@ -725,7 +725,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_READLINK] = {
 		.pc_func = nfsd3_proc_readlink,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_readlinkargs,
+		.pc_decode = nfs3svc_decode_readlinkargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readlinkres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_readlinkargs),
@@ -735,7 +735,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_READ] = {
 		.pc_func = nfsd3_proc_read,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_readargs,
+		.pc_decode = nfs3svc_decode_readargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_readargs),
@@ -745,7 +745,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_WRITE] = {
 		.pc_func = nfsd3_proc_write,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_writeargs,
+		.pc_decode = nfs3svc_decode_writeargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_writeres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_writeargs),
@@ -755,7 +755,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_CREATE] = {
 		.pc_func = nfsd3_proc_create,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_createargs,
+		.pc_decode = nfs3svc_decode_createargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_createargs),
@@ -765,7 +765,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_MKDIR] = {
 		.pc_func = nfsd3_proc_mkdir,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_mkdirargs,
+		.pc_decode = nfs3svc_decode_mkdirargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_mkdirargs),
@@ -775,7 +775,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_SYMLINK] = {
 		.pc_func = nfsd3_proc_symlink,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_symlinkargs,
+		.pc_decode = nfs3svc_decode_symlinkargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_symlinkargs),
@@ -785,7 +785,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_MKNOD] = {
 		.pc_func = nfsd3_proc_mknod,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_mknodargs,
+		.pc_decode = nfs3svc_decode_mknodargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_createres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_mknodargs),
@@ -795,7 +795,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_REMOVE] = {
 		.pc_func = nfsd3_proc_remove,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
+		.pc_decode = nfs3svc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_diropargs),
@@ -805,7 +805,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_RMDIR] = {
 		.pc_func = nfsd3_proc_rmdir,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_diropargs,
+		.pc_decode = nfs3svc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_wccstatres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_diropargs),
@@ -815,7 +815,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_RENAME] = {
 		.pc_func = nfsd3_proc_rename,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_renameargs,
+		.pc_decode = nfs3svc_decode_renameargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_renameres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_renameargs),
@@ -825,7 +825,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_LINK] = {
 		.pc_func = nfsd3_proc_link,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_linkargs,
+		.pc_decode = nfs3svc_decode_linkargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_linkres,
 		.pc_release = nfs3svc_release_fhandle2,
 		.pc_argsize = sizeof(struct nfsd3_linkargs),
@@ -835,7 +835,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_READDIR] = {
 		.pc_func = nfsd3_proc_readdir,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_readdirargs,
+		.pc_decode = nfs3svc_decode_readdirargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_readdirargs),
@@ -844,7 +844,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_READDIRPLUS] = {
 		.pc_func = nfsd3_proc_readdirplus,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_readdirplusargs,
+		.pc_decode = nfs3svc_decode_readdirplusargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_readdirres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_readdirplusargs),
@@ -853,7 +853,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_FSSTAT] = {
 		.pc_func = nfsd3_proc_fsstat,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
+		.pc_decode = nfs3svc_decode_fhandleargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_fsstatres,
 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
 		.pc_ressize = sizeof(struct nfsd3_fsstatres),
@@ -862,7 +862,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_FSINFO] = {
 		.pc_func = nfsd3_proc_fsinfo,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
+		.pc_decode = nfs3svc_decode_fhandleargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_fsinfores,
 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
 		.pc_ressize = sizeof(struct nfsd3_fsinfores),
@@ -871,7 +871,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_PATHCONF] = {
 		.pc_func = nfsd3_proc_pathconf,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_fhandleargs,
+		.pc_decode = nfs3svc_decode_fhandleargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_pathconfres,
 		.pc_argsize = sizeof(struct nfsd3_fhandleargs),
 		.pc_ressize = sizeof(struct nfsd3_pathconfres),
@@ -880,7 +880,7 @@ static struct svc_procedure		nfsd_procedures3[22] = {
 	},
 	[NFS3PROC_COMMIT] = {
 		.pc_func = nfsd3_proc_commit,
-		.pc_decode = (kxdrproc_t) nfs3svc_decode_commitargs,
+		.pc_decode = nfs3svc_decode_commitargs,
 		.pc_encode = (kxdrproc_t) nfs3svc_encode_commitres,
 		.pc_release = nfs3svc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd3_commitargs),
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index 7fd361a75287..be8bf8af9917 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -273,8 +273,10 @@ void fill_post_wcc(struct svc_fh *fhp)
  * XDR decode functions
  */
 int
-nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args)
+nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_fhandle *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -282,9 +284,10 @@ nfs3svc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *a
 }
 
 int
-nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_sattrargs *args)
+nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_sattrargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -300,9 +303,10 @@ nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_diropargs *args)
+nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_diropargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->fh))
 	 || !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -311,9 +315,10 @@ nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_accessargs *args)
+nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_accessargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -323,9 +328,9 @@ nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_readargs *args)
+nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_readargs *args = rqstp->rq_argp;
 	unsigned int len;
 	int v;
 	u32 max_blocksize = svc_max_payload(rqstp);
@@ -356,9 +361,9 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_writeargs *args)
+nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_writeargs *args = rqstp->rq_argp;
 	unsigned int len, v, hdr, dlen;
 	u32 max_blocksize = svc_max_payload(rqstp);
 	struct kvec *head = rqstp->rq_arg.head;
@@ -416,9 +421,10 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_createargs *args)
+nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_createargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->fh))
 	 || !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -438,10 +444,12 @@ nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p,
 
 	return xdr_argsize_check(rqstp, p);
 }
+
 int
-nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_createargs *args)
+nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_createargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->fh)) ||
 	    !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -451,9 +459,9 @@ nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_symlinkargs *args)
+nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_symlinkargs *args = rqstp->rq_argp;
 	unsigned int len, avail;
 	char *old, *new;
 	struct kvec *vec;
@@ -503,9 +511,10 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_mknodargs *args)
+nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_mknodargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->fh))
 	 || !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -525,9 +534,10 @@ nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_renameargs *args)
+nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_renameargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->ffh))
 	 || !(p = decode_filename(p, &args->fname, &args->flen))
 	 || !(p = decode_fh(p, &args->tfh))
@@ -538,9 +548,10 @@ nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_readlinkargs *args)
+nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_readlinkargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -552,9 +563,10 @@ nfs3svc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_linkargs *args)
+nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_linkargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->ffh))
 	 || !(p = decode_fh(p, &args->tfh))
 	 || !(p = decode_filename(p, &args->tname, &args->tlen)))
@@ -564,9 +576,9 @@ nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_readdirargs *args)
+nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_readdirargs *args = rqstp->rq_argp;
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -585,9 +597,9 @@ nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_readdirargs *args)
+nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_readdirargs *args = rqstp->rq_argp;
 	int len;
 	u32 max_blocksize = svc_max_payload(rqstp);
 
@@ -613,9 +625,9 @@ nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd3_commitargs *args)
+nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd3_commitargs *args = rqstp->rq_argp;
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
diff --git a/fs/nfsd/nfs4proc.c b/fs/nfsd/nfs4proc.c
index 7a0112bc3531..6ff434b77a9e 100644
--- a/fs/nfsd/nfs4proc.c
+++ b/fs/nfsd/nfs4proc.c
@@ -2528,7 +2528,7 @@ static struct svc_procedure		nfsd_procedures4[2] = {
 	},
 	[NFSPROC4_COMPOUND] = {
 		.pc_func = nfsd4_proc_compound,
-		.pc_decode = (kxdrproc_t) nfs4svc_decode_compoundargs,
+		.pc_decode = nfs4svc_decode_compoundargs,
 		.pc_encode = (kxdrproc_t) nfs4svc_encode_compoundres,
 		.pc_argsize = sizeof(struct nfsd4_compoundargs),
 		.pc_ressize = sizeof(struct nfsd4_compoundres),
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 5aa847bdfc63..3a7e117bd11e 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -4561,8 +4561,10 @@ void nfsd4_release_compoundargs(struct svc_rqst *rqstp)
 }
 
 int
-nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd4_compoundargs *args)
+nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd4_compoundargs *args = rqstp->rq_argp;
+
 	if (rqstp->rq_arg.head[0].iov_len % 4) {
 		/* client is nuts */
 		dprintk("%s: compound not properly padded! (peeraddr=%pISc xid=0x%x)",
diff --git a/fs/nfsd/nfsproc.c b/fs/nfsd/nfsproc.c
index dc32e0f8480d..d351d0ef6d34 100644
--- a/fs/nfsd/nfsproc.c
+++ b/fs/nfsd/nfsproc.c
@@ -576,7 +576,7 @@ struct nfsd_void { int dummy; };
 static struct svc_procedure		nfsd_procedures2[18] = {
 	[NFSPROC_NULL] = {
 		.pc_func = nfsd_proc_null,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_void,
+		.pc_decode = nfssvc_decode_void,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_void),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -585,7 +585,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_GETATTR] = {
 		.pc_func = nfsd_proc_getattr,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
+		.pc_decode = nfssvc_decode_fhandle,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_fhandle),
@@ -595,7 +595,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_SETATTR] = {
 		.pc_func = nfsd_proc_setattr,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_sattrargs,
+		.pc_decode = nfssvc_decode_sattrargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_sattrargs),
@@ -604,7 +604,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 		.pc_xdrressize = ST+AT,
 	},
 	[NFSPROC_ROOT] = {
-		.pc_decode = (kxdrproc_t) nfssvc_decode_void,
+		.pc_decode = nfssvc_decode_void,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_void),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -613,7 +613,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_LOOKUP] = {
 		.pc_func = nfsd_proc_lookup,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
+		.pc_decode = nfssvc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_diropargs),
@@ -623,7 +623,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_READLINK] = {
 		.pc_func = nfsd_proc_readlink,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_readlinkargs,
+		.pc_decode = nfssvc_decode_readlinkargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_readlinkres,
 		.pc_argsize = sizeof(struct nfsd_readlinkargs),
 		.pc_ressize = sizeof(struct nfsd_readlinkres),
@@ -632,7 +632,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_READ] = {
 		.pc_func = nfsd_proc_read,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_readargs,
+		.pc_decode = nfssvc_decode_readargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_readres,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_readargs),
@@ -641,7 +641,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 		.pc_xdrressize = ST+AT+1+NFSSVC_MAXBLKSIZE_V2/4,
 	},
 	[NFSPROC_WRITECACHE] = {
-		.pc_decode = (kxdrproc_t) nfssvc_decode_void,
+		.pc_decode = nfssvc_decode_void,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_void),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -650,7 +650,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_WRITE] = {
 		.pc_func = nfsd_proc_write,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_writeargs,
+		.pc_decode = nfssvc_decode_writeargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_attrstat,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_writeargs),
@@ -660,7 +660,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_CREATE] = {
 		.pc_func = nfsd_proc_create,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
+		.pc_decode = nfssvc_decode_createargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_createargs),
@@ -670,7 +670,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_REMOVE] = {
 		.pc_func = nfsd_proc_remove,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
+		.pc_decode = nfssvc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_diropargs),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -679,7 +679,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_RENAME] = {
 		.pc_func = nfsd_proc_rename,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_renameargs,
+		.pc_decode = nfssvc_decode_renameargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_renameargs),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -688,7 +688,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_LINK] = {
 		.pc_func = nfsd_proc_link,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_linkargs,
+		.pc_decode = nfssvc_decode_linkargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_linkargs),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -697,7 +697,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_SYMLINK] = {
 		.pc_func = nfsd_proc_symlink,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_symlinkargs,
+		.pc_decode = nfssvc_decode_symlinkargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_symlinkargs),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -706,7 +706,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_MKDIR] = {
 		.pc_func = nfsd_proc_mkdir,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_createargs,
+		.pc_decode = nfssvc_decode_createargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_diropres,
 		.pc_release = nfssvc_release_fhandle,
 		.pc_argsize = sizeof(struct nfsd_createargs),
@@ -716,7 +716,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_RMDIR] = {
 		.pc_func = nfsd_proc_rmdir,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_diropargs,
+		.pc_decode = nfssvc_decode_diropargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_void,
 		.pc_argsize = sizeof(struct nfsd_diropargs),
 		.pc_ressize = sizeof(struct nfsd_void),
@@ -725,7 +725,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_READDIR] = {
 		.pc_func = nfsd_proc_readdir,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_readdirargs,
+		.pc_decode = nfssvc_decode_readdirargs,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_readdirres,
 		.pc_argsize = sizeof(struct nfsd_readdirargs),
 		.pc_ressize = sizeof(struct nfsd_readdirres),
@@ -733,7 +733,7 @@ static struct svc_procedure		nfsd_procedures2[18] = {
 	},
 	[NFSPROC_STATFS] = {
 		.pc_func = nfsd_proc_statfs,
-		.pc_decode = (kxdrproc_t) nfssvc_decode_fhandle,
+		.pc_decode = nfssvc_decode_fhandle,
 		.pc_encode = (kxdrproc_t) nfssvc_encode_statfsres,
 		.pc_argsize = sizeof(struct nfsd_fhandle),
 		.pc_ressize = sizeof(struct nfsd_statfsres),
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index d64895fd8d25..3e00499d7ad7 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -801,9 +801,8 @@ nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 	 */
 	rqstp->rq_cachetype = proc->pc_cachetype;
 	/* Decode arguments */
-	xdr = proc->pc_decode;
-	if (xdr && !xdr(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base,
-			rqstp->rq_argp)) {
+	if (proc->pc_decode &&
+	    !proc->pc_decode(rqstp, (__be32*)rqstp->rq_arg.head[0].iov_base)) {
 		dprintk("nfsd: failed to decode arguments!\n");
 		*statp = rpc_garbage_args;
 		return 1;
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index de7b07ee489e..0957ceebe1aa 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -206,14 +206,16 @@ __be32 *nfs2svc_encode_fattr(struct svc_rqst *rqstp, __be32 *p, struct svc_fh *f
  * XDR decode functions
  */
 int
-nfssvc_decode_void(struct svc_rqst *rqstp, __be32 *p, void *dummy)
+nfssvc_decode_void(struct svc_rqst *rqstp, __be32 *p)
 {
 	return xdr_argsize_check(rqstp, p);
 }
 
 int
-nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *args)
+nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_fhandle *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -221,9 +223,10 @@ nfssvc_decode_fhandle(struct svc_rqst *rqstp, __be32 *p, struct nfsd_fhandle *ar
 }
 
 int
-nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_sattrargs *args)
+nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_sattrargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -233,9 +236,10 @@ nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_diropargs *args)
+nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_diropargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->fh))
 	 || !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -244,9 +248,9 @@ nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_readargs *args)
+nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_readargs *args = rqstp->rq_argp;
 	unsigned int len;
 	int v;
 	p = decode_fh(p, &args->fh);
@@ -279,9 +283,9 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_writeargs *args)
+nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_writeargs *args = rqstp->rq_argp;
 	unsigned int len, hdr, dlen;
 	struct kvec *head = rqstp->rq_arg.head;
 	int v;
@@ -335,9 +339,10 @@ nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_createargs *args)
+nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_createargs *args = rqstp->rq_argp;
+
 	if (   !(p = decode_fh(p, &args->fh))
 	    || !(p = decode_filename(p, &args->name, &args->len)))
 		return 0;
@@ -347,9 +352,10 @@ nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_renameargs *args)
+nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_renameargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->ffh))
 	 || !(p = decode_filename(p, &args->fname, &args->flen))
 	 || !(p = decode_fh(p, &args->tfh))
@@ -360,8 +366,10 @@ nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readlinkargs *args)
+nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_readlinkargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
@@ -373,9 +381,10 @@ nfssvc_decode_readlinkargs(struct svc_rqst *rqstp, __be32 *p, struct nfsd_readli
 }
 
 int
-nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_linkargs *args)
+nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_linkargs *args = rqstp->rq_argp;
+
 	if (!(p = decode_fh(p, &args->ffh))
 	 || !(p = decode_fh(p, &args->tfh))
 	 || !(p = decode_filename(p, &args->tname, &args->tlen)))
@@ -385,9 +394,10 @@ nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_symlinkargs *args)
+nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_symlinkargs *args = rqstp->rq_argp;
+
 	if (   !(p = decode_fh(p, &args->ffh))
 	    || !(p = decode_filename(p, &args->fname, &args->flen))
 	    || !(p = decode_pathname(p, &args->tname, &args->tlen)))
@@ -398,9 +408,10 @@ nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p,
 }
 
 int
-nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p,
-					struct nfsd_readdirargs *args)
+nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
 {
+	struct nfsd_readdirargs *args = rqstp->rq_argp;
+
 	p = decode_fh(p, &args->fh);
 	if (!p)
 		return 0;
diff --git a/fs/nfsd/xdr.h b/fs/nfsd/xdr.h
index 2c21fa843fbf..8eeb752cf6f8 100644
--- a/fs/nfsd/xdr.h
+++ b/fs/nfsd/xdr.h
@@ -131,28 +131,18 @@ union nfsd_xdrstore {
 #define NFS2_SVC_XDRSIZE	sizeof(union nfsd_xdrstore)
 
 
-int nfssvc_decode_void(struct svc_rqst *, __be32 *, void *);
-int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
-int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *,
-				struct nfsd_sattrargs *);
-int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *,
-				struct nfsd_diropargs *);
-int nfssvc_decode_readargs(struct svc_rqst *, __be32 *,
-				struct nfsd_readargs *);
-int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *,
-				struct nfsd_writeargs *);
-int nfssvc_decode_createargs(struct svc_rqst *, __be32 *,
-				struct nfsd_createargs *);
-int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *,
-				struct nfsd_renameargs *);
-int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *,
-				struct nfsd_readlinkargs *);
-int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *,
-				struct nfsd_linkargs *);
-int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *,
-				struct nfsd_symlinkargs *);
-int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *,
-				struct nfsd_readdirargs *);
+int nfssvc_decode_void(struct svc_rqst *, __be32 *);
+int nfssvc_decode_fhandle(struct svc_rqst *, __be32 *);
+int nfssvc_decode_sattrargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_diropargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_readargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_writeargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_createargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_renameargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_readlinkargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_linkargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *);
 int nfssvc_encode_void(struct svc_rqst *, __be32 *, void *);
 int nfssvc_encode_attrstat(struct svc_rqst *, __be32 *, struct nfsd_attrstat *);
 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *, struct nfsd_diropres *);
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 23fe456a223b..f79be4c42e4a 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -269,37 +269,22 @@ union nfsd3_xdrstore {
 
 #define NFS3_SVC_XDRSIZE		sizeof(union nfsd3_xdrstore)
 
-int nfs3svc_decode_fhandle(struct svc_rqst *, __be32 *, struct nfsd_fhandle *);
-int nfs3svc_decode_sattrargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_sattrargs *);
-int nfs3svc_decode_diropargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_diropargs *);
-int nfs3svc_decode_accessargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_accessargs *);
-int nfs3svc_decode_readargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_readargs *);
-int nfs3svc_decode_writeargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_writeargs *);
-int nfs3svc_decode_createargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_createargs *);
-int nfs3svc_decode_mkdirargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_createargs *);
-int nfs3svc_decode_mknodargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_mknodargs *);
-int nfs3svc_decode_renameargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_renameargs *);
-int nfs3svc_decode_readlinkargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_readlinkargs *);
-int nfs3svc_decode_linkargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_linkargs *);
-int nfs3svc_decode_symlinkargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_symlinkargs *);
-int nfs3svc_decode_readdirargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_readdirargs *);
-int nfs3svc_decode_readdirplusargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_readdirargs *);
-int nfs3svc_decode_commitargs(struct svc_rqst *, __be32 *,
-				struct nfsd3_commitargs *);
+int nfs3svc_decode_fhandle(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_sattrargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_diropargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_accessargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_readargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_writeargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_createargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_mkdirargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_mknodargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_renameargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_readlinkargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_linkargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_symlinkargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_readdirargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_readdirplusargs(struct svc_rqst *, __be32 *);
+int nfs3svc_decode_commitargs(struct svc_rqst *, __be32 *);
 int nfs3svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
 int nfs3svc_encode_attrstat(struct svc_rqst *, __be32 *,
 				struct nfsd3_attrstat *);
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index a158579d55a2..2a53c1233884 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -683,8 +683,7 @@ set_change_info(struct nfsd4_change_info *cinfo, struct svc_fh *fhp)
 
 bool nfsd4_mach_creds_match(struct nfs4_client *cl, struct svc_rqst *rqstp);
 int nfs4svc_encode_voidres(struct svc_rqst *, __be32 *, void *);
-int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *,
-		struct nfsd4_compoundargs *);
+int nfs4svc_decode_compoundargs(struct svc_rqst *, __be32 *);
 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *,
 		struct nfsd4_compoundres *);
 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index d39ed1cc5fbf..0416600844ce 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -95,19 +95,19 @@ struct nlm_reboot {
  */
 #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
 
-int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlmsvc_decode_lockargs(struct svc_rqst *, __be32 *);
+int	nlmsvc_decode_cancargs(struct svc_rqst *, __be32 *);
+int	nlmsvc_decode_unlockargs(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlmsvc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
+int	nlmsvc_decode_res(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_void(struct svc_rqst *, __be32 *, void *);
-int	nlmsvc_decode_void(struct svc_rqst *, __be32 *, void *);
-int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlmsvc_decode_void(struct svc_rqst *, __be32 *);
+int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
+int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *);
+int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *);
 /*
 int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
diff --git a/include/linux/lockd/xdr4.h b/include/linux/lockd/xdr4.h
index e58c88b52ce1..951bbe31fdb8 100644
--- a/include/linux/lockd/xdr4.h
+++ b/include/linux/lockd/xdr4.h
@@ -23,19 +23,19 @@
 
 
 
-int	nlm4svc_decode_testargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlm4svc_decode_testargs(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_testres(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlm4svc_decode_lockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlm4svc_decode_cancargs(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlm4svc_decode_unlockargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlm4svc_decode_lockargs(struct svc_rqst *, __be32 *);
+int	nlm4svc_decode_cancargs(struct svc_rqst *, __be32 *);
+int	nlm4svc_decode_unlockargs(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlm4svc_decode_res(struct svc_rqst *, __be32 *, struct nlm_res *);
+int	nlm4svc_decode_res(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_void(struct svc_rqst *, __be32 *, void *);
-int	nlm4svc_decode_void(struct svc_rqst *, __be32 *, void *);
-int	nlm4svc_decode_shareargs(struct svc_rqst *, __be32 *, struct nlm_args *);
+int	nlm4svc_decode_void(struct svc_rqst *, __be32 *);
+int	nlm4svc_decode_shareargs(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_shareres(struct svc_rqst *, __be32 *, struct nlm_res *);
-int	nlm4svc_decode_notify(struct svc_rqst *, __be32 *, struct nlm_args *);
-int	nlm4svc_decode_reboot(struct svc_rqst *, __be32 *, struct nlm_reboot *);
+int	nlm4svc_decode_notify(struct svc_rqst *, __be32 *);
+int	nlm4svc_decode_reboot(struct svc_rqst *, __be32 *);
 /*
 int	nlmclt_encode_testargs(struct rpc_rqst *, u32 *, struct nlm_args *);
 int	nlmclt_encode_lockargs(struct rpc_rqst *, u32 *, struct nlm_args *);
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 1381e1343640..047f04411dd4 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -421,7 +421,8 @@ struct svc_version {
 struct svc_procedure {
 	/* process the request: */
 	__be32			(*pc_func)(struct svc_rqst *);
-	kxdrproc_t		pc_decode;	/* XDR decode args */
+	/* XDR decode args: */
+	int			(*pc_decode)(struct svc_rqst *, __be32 *data);
 	kxdrproc_t		pc_encode;	/* XDR encode result */
 	/* XDR free result: */
 	void			(*pc_release)(struct svc_rqst *);
diff --git a/net/sunrpc/svc.c b/net/sunrpc/svc.c
index 4611cb7adc04..18024c1b9b7b 100644
--- a/net/sunrpc/svc.c
+++ b/net/sunrpc/svc.c
@@ -1276,9 +1276,12 @@ svc_process_common(struct svc_rqst *rqstp, struct kvec *argv, struct kvec *resv)
 
 	/* Call the function that processes the request. */
 	if (!versp->vs_dispatch) {
-		/* Decode arguments */
-		xdr = procp->pc_decode;
-		if (xdr && !xdr(rqstp, argv->iov_base, rqstp->rq_argp))
+		/*
+		 * Decode arguments
+		 * XXX: why do we ignore the return value?
+		 */
+		if (procp->pc_decode &&
+		    !procp->pc_decode(rqstp, argv->iov_base))
 			goto err_garbage;
 
 		*statp = procp->pc_func(rqstp);