[PATCH 5.15 204/690] SUNRPC: Replace the "__be32 *p" parameter to .pc_decode

8 Apr 2024

5.15-stable review patch.  If anyone has any objections, please let me know.
------------------
From: Chuck Lever chuck.lever@oracle.com
[ Upstream commit 16c663642c7ec03cd4cee5fec520bb69e97babe4 ]
The passed-in value of the "__be32 *p" parameter is now unused in
every server-side XDR decoder, and can be removed.
Note also that there is a line in each decoder that sets up a local
pointer to a struct xdr_stream. Passing that pointer from the
dispatcher instead saves one line per decoder function.
Signed-off-by: Chuck Lever chuck.lever@oracle.com
Signed-off-by: J. Bruce Fields bfields@redhat.com
Signed-off-by: Chuck Lever chuck.lever@oracle.com
---
 fs/lockd/svc.c             |  3 +--
 fs/lockd/xdr.c             | 27 +++++++++--------------
 fs/lockd/xdr4.c            | 27 +++++++++--------------
 fs/nfsd/nfs2acl.c          | 12 +++++-----
 fs/nfsd/nfs3acl.c          |  8 +++----
 fs/nfsd/nfs3xdr.c          | 45 +++++++++++++-------------------------
 fs/nfsd/nfs4xdr.c          |  4 ++--
 fs/nfsd/nfsd.h             |  3 ++-
 fs/nfsd/nfssvc.c           |  7 +++---
 fs/nfsd/nfsxdr.c           | 30 +++++++++----------------
 fs/nfsd/xdr.h              | 21 +++++++++---------
 fs/nfsd/xdr3.h             | 31 +++++++++++++-------------
 fs/nfsd/xdr4.h             |  2 +-
 include/linux/lockd/xdr.h  | 19 ++++++++--------
 include/linux/lockd/xdr4.h | 21 +++++++++---------
 include/linux/sunrpc/svc.h |  3 ++-
 16 files changed, 113 insertions(+), 150 deletions(-)

diff --git a/fs/lockd/svc.c b/fs/lockd/svc.c
index b632be3ad57b2..9a82471bda071 100644
--- a/fs/lockd/svc.c
+++ b/fs/lockd/svc.c
@@ -780,11 +780,10 @@ module_exit(exit_nlm);
 static int nlmsvc_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 {
    const struct svc_procedure *procp = rqstp->rq_procinfo;
-	struct kvec *argv = rqstp->rq_arg.head;
    struct kvec *resv = rqstp->rq_res.head;
svcxdr_init_decode(rqstp);
-	if (!procp->pc_decode(rqstp, argv->iov_base))
+	if (!procp->pc_decode(rqstp, &rqstp->rq_arg_stream))
    	goto out_decode_err;
*statp = procp->pc_func(rqstp);
diff --git a/fs/lockd/xdr.c b/fs/lockd/xdr.c
index 9235e60b17694..895f152221048 100644
--- a/fs/lockd/xdr.c
+++ b/fs/lockd/xdr.c
@@ -146,15 +146,14 @@ svcxdr_encode_testrply(struct xdr_stream *xdr, const struct nlm_res *resp)
  */
int
-nlmsvc_decode_void(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
    return 1;
 }
int
-nlmsvc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -171,9 +170,8 @@ nlmsvc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -197,9 +195,8 @@ nlmsvc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -218,9 +215,8 @@ nlmsvc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
if (!svcxdr_decode_cookie(xdr, &argp->cookie))
@@ -233,9 +229,8 @@ nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_res(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_res *resp = rqstp->rq_argp;
if (!svcxdr_decode_cookie(xdr, &resp->cookie))
@@ -247,10 +242,10 @@ nlmsvc_decode_res(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_reboot *argp = rqstp->rq_argp;
+	__be32 *p;
    u32 len;
if (xdr_stream_decode_u32(xdr, &len) < 0)
@@ -273,9 +268,8 @@ nlmsvc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    struct nlm_lock	*lock = &argp->lock;
@@ -301,9 +295,8 @@ nlmsvc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlmsvc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
+nlmsvc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    struct nlm_lock	*lock = &argp->lock;
diff --git a/fs/lockd/xdr4.c b/fs/lockd/xdr4.c
index b303ecd74f330..5e6885d1b92de 100644
--- a/fs/lockd/xdr4.c
+++ b/fs/lockd/xdr4.c
@@ -141,15 +141,14 @@ svcxdr_encode_testrply(struct xdr_stream *xdr, const struct nlm_res *resp)
  */
int
-nlm4svc_decode_void(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
    return 1;
 }
int
-nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -166,9 +165,8 @@ nlm4svc_decode_testargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -192,9 +190,8 @@ nlm4svc_decode_lockargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    u32 exclusive;
@@ -212,9 +209,8 @@ nlm4svc_decode_cancargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
if (!svcxdr_decode_cookie(xdr, &argp->cookie))
@@ -227,9 +223,8 @@ nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_res *resp = rqstp->rq_argp;
if (!svcxdr_decode_cookie(xdr, &resp->cookie))
@@ -241,10 +236,10 @@ nlm4svc_decode_res(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_reboot *argp = rqstp->rq_argp;
+	__be32 *p;
    u32 len;
if (xdr_stream_decode_u32(xdr, &len) < 0)
@@ -267,9 +262,8 @@ nlm4svc_decode_reboot(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    struct nlm_lock	*lock = &argp->lock;
@@ -295,9 +289,8 @@ nlm4svc_decode_shareargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nlm4svc_decode_notify(struct svc_rqst *rqstp, __be32 *p)
+nlm4svc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nlm_args *argp = rqstp->rq_argp;
    struct nlm_lock	*lock = &argp->lock;
diff --git a/fs/nfsd/nfs2acl.c b/fs/nfsd/nfs2acl.c
index 30a1782a03f01..9bd0899455903 100644
--- a/fs/nfsd/nfs2acl.c
+++ b/fs/nfsd/nfs2acl.c
@@ -188,9 +188,9 @@ static __be32 nfsacld_proc_access(struct svc_rqst *rqstp)
  * XDR decode functions
  */
-static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
+static int
+nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_getaclargs *argp = rqstp->rq_argp;
if (!svcxdr_decode_fhandle(xdr, &argp->fh))
@@ -201,9 +201,9 @@ static int nfsaclsvc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
    return 1;
 }
-static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
+static int
+nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_setaclargs *argp = rqstp->rq_argp;
if (!svcxdr_decode_fhandle(xdr, &argp->fh))
@@ -222,9 +222,9 @@ static int nfsaclsvc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
    return 1;
 }
-static int nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
+static int
+nfsaclsvc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_accessargs *args = rqstp->rq_argp;
if (!svcxdr_decode_fhandle(xdr, &args->fh))
diff --git a/fs/nfsd/nfs3acl.c b/fs/nfsd/nfs3acl.c
index 5dfe7644a5172..b1e352ed2436e 100644
--- a/fs/nfsd/nfs3acl.c
+++ b/fs/nfsd/nfs3acl.c
@@ -127,9 +127,9 @@ static __be32 nfsd3_proc_setacl(struct svc_rqst *rqstp)
  * XDR decode functions
  */
-static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
+static int
+nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_getaclargs *args = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
@@ -140,9 +140,9 @@ static int nfs3svc_decode_getaclargs(struct svc_rqst *rqstp, __be32 *p)
    return 1;
 }
-static int nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, __be32 *p)
+static int
+nfs3svc_decode_setaclargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_setaclargs *argp = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &argp->fh))
diff --git a/fs/nfsd/nfs3xdr.c b/fs/nfsd/nfs3xdr.c
index c69d0dc50a669..b4a36989b3e24 100644
--- a/fs/nfsd/nfs3xdr.c
+++ b/fs/nfsd/nfs3xdr.c
@@ -547,18 +547,16 @@ void fill_post_wcc(struct svc_fh *fhp)
  */
int
-nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_fhandle *args = rqstp->rq_argp;
return svcxdr_decode_nfs_fh3(xdr, &args->fh);
 }
int
-nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_sattrargs *args = rqstp->rq_argp;
return svcxdr_decode_nfs_fh3(xdr, &args->fh) &&
@@ -567,18 +565,16 @@ nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_diropargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len);
 }
int
-nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_accessargs *args = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
@@ -590,9 +586,8 @@ nfs3svc_decode_accessargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_readargs *args = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
@@ -606,9 +601,8 @@ nfs3svc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_writeargs *args = rqstp->rq_argp;
    u32 max_blocksize = svc_max_payload(rqstp);
@@ -639,9 +633,8 @@ nfs3svc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_createargs *args = rqstp->rq_argp;
if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len))
@@ -664,9 +657,8 @@ nfs3svc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_createargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs3(xdr, &args->fh,
@@ -675,9 +667,8 @@ nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_symlinkargs *args = rqstp->rq_argp;
    struct kvec *head = rqstp->rq_arg.head;
    struct kvec *tail = rqstp->rq_arg.tail;
@@ -703,9 +694,8 @@ nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_mknodargs *args = rqstp->rq_argp;
if (!svcxdr_decode_diropargs3(xdr, &args->fh, &args->name, &args->len))
@@ -732,9 +722,8 @@ nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_renameargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs3(xdr, &args->ffh,
@@ -744,9 +733,8 @@ nfs3svc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_linkargs *args = rqstp->rq_argp;
return svcxdr_decode_nfs_fh3(xdr, &args->ffh) &&
@@ -755,9 +743,8 @@ nfs3svc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_readdirargs *args = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
@@ -774,9 +761,8 @@ nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_readdirargs *args = rqstp->rq_argp;
    u32 dircount;
@@ -797,9 +783,8 @@ nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfs3svc_decode_commitargs(struct svc_rqst *rqstp, __be32 *p)
+nfs3svc_decode_commitargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd3_commitargs *args = rqstp->rq_argp;
if (!svcxdr_decode_nfs_fh3(xdr, &args->fh))
diff --git a/fs/nfsd/nfs4xdr.c b/fs/nfsd/nfs4xdr.c
index 1474af184368d..ec052e88d9008 100644
--- a/fs/nfsd/nfs4xdr.c
+++ b/fs/nfsd/nfs4xdr.c
@@ -5413,14 +5413,14 @@ void nfsd4_release_compoundargs(struct svc_rqst *rqstp)
 }
int
-nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, __be32 *p)
+nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
    struct nfsd4_compoundargs *args = rqstp->rq_argp;
/* svcxdr_tmp_alloc */
    args->to_free = NULL;
-	args->xdr = &rqstp->rq_arg_stream;
+	args->xdr = xdr;
    args->ops = args->iops;
    args->rqstp = rqstp;
diff --git a/fs/nfsd/nfsd.h b/fs/nfsd/nfsd.h
index 9664303afdaf3..6e8ad5f9757c8 100644
--- a/fs/nfsd/nfsd.h
+++ b/fs/nfsd/nfsd.h
@@ -78,7 +78,8 @@ extern const struct seq_operations nfs_exports_op;
  */
 struct nfsd_voidargs { };
 struct nfsd_voidres { };
-int		nfssvc_decode_voidarg(struct svc_rqst *rqstp, __be32 *p);
+int		nfssvc_decode_voidarg(struct svc_rqst *rqstp,
+				      struct xdr_stream *xdr);
 int		nfssvc_encode_voidres(struct svc_rqst *rqstp, __be32 *p);
/*
diff --git a/fs/nfsd/nfssvc.c b/fs/nfsd/nfssvc.c
index 373695cc62a7a..be1d656548cfe 100644
--- a/fs/nfsd/nfssvc.c
+++ b/fs/nfsd/nfssvc.c
@@ -1004,7 +1004,6 @@ nfsd(void *vrqstp)
 int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 {
    const struct svc_procedure *proc = rqstp->rq_procinfo;
-	struct kvec *argv = &rqstp->rq_arg.head[0];
    struct kvec *resv = &rqstp->rq_res.head[0];
    __be32 *p;
@@ -1015,7 +1014,7 @@ int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
    rqstp->rq_cachetype = proc->pc_cachetype;
svcxdr_init_decode(rqstp);
-	if (!proc->pc_decode(rqstp, argv->iov_base))
+	if (!proc->pc_decode(rqstp, &rqstp->rq_arg_stream))
    	goto out_decode_err;
switch (nfsd_cache_lookup(rqstp)) {
@@ -1065,13 +1064,13 @@ int nfsd_dispatch(struct svc_rqst *rqstp, __be32 *statp)
 /**
  * nfssvc_decode_voidarg - Decode void arguments
  * @rqstp: Server RPC transaction context
- * @p: buffer containing arguments to decode
+ * @xdr: XDR stream positioned at arguments to decode
  *
  * Return values:
  *   %0: Arguments were not valid
  *   %1: Decoding was successful
  */
-int nfssvc_decode_voidarg(struct svc_rqst *rqstp, __be32 *p)
+int nfssvc_decode_voidarg(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
    return 1;
 }
diff --git a/fs/nfsd/nfsxdr.c b/fs/nfsd/nfsxdr.c
index ddcc18adfeb1a..08e899180ee43 100644
--- a/fs/nfsd/nfsxdr.c
+++ b/fs/nfsd/nfsxdr.c
@@ -273,18 +273,16 @@ svcxdr_encode_fattr(struct svc_rqst *rqstp, struct xdr_stream *xdr,
  */
int
-nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_fhandle *args = rqstp->rq_argp;
return svcxdr_decode_fhandle(xdr, &args->fh);
 }
int
-nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_sattrargs *args = rqstp->rq_argp;
return svcxdr_decode_fhandle(xdr, &args->fh) &&
@@ -292,18 +290,16 @@ nfssvc_decode_sattrargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_diropargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_diropargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs(xdr, &args->fh, &args->name, &args->len);
 }
int
-nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_readargs *args = rqstp->rq_argp;
    u32 totalcount;
@@ -321,9 +317,8 @@ nfssvc_decode_readargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_writeargs *args = rqstp->rq_argp;
    u32 beginoffset, totalcount;
@@ -350,9 +345,8 @@ nfssvc_decode_writeargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_createargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs(xdr, &args->fh,
@@ -361,9 +355,8 @@ nfssvc_decode_createargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_renameargs *args = rqstp->rq_argp;
return svcxdr_decode_diropargs(xdr, &args->ffh,
@@ -373,9 +366,8 @@ nfssvc_decode_renameargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_linkargs *args = rqstp->rq_argp;
return svcxdr_decode_fhandle(xdr, &args->ffh) &&
@@ -384,9 +376,8 @@ nfssvc_decode_linkargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_symlinkargs *args = rqstp->rq_argp;
    struct kvec *head = rqstp->rq_arg.head;
@@ -405,9 +396,8 @@ nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, __be32 *p)
 }
int
-nfssvc_decode_readdirargs(struct svc_rqst *rqstp, __be32 *p)
+nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr)
 {
-	struct xdr_stream *xdr = &rqstp->rq_arg_stream;
    struct nfsd_readdirargs *args = rqstp->rq_argp;
if (!svcxdr_decode_fhandle(xdr, &args->fh))
diff --git a/fs/nfsd/xdr.h b/fs/nfsd/xdr.h
index 863a35f24910a..19e281382bb98 100644
--- a/fs/nfsd/xdr.h
+++ b/fs/nfsd/xdr.h
@@ -141,16 +141,17 @@ union nfsd_xdrstore {
 #define NFS2_SVC_XDRSIZE	sizeof(union nfsd_xdrstore)
-int nfssvc_decode_fhandleargs(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_linkargs(struct svc_rqst *, __be32 *);
-int nfssvc_decode_symlinkargs(struct svc_rqst *, __be32 *);
-int nfssvc_decode_readdirargs(struct svc_rqst *, __be32 *);
+int nfssvc_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfssvc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
 int nfssvc_encode_statres(struct svc_rqst *, __be32 *);
 int nfssvc_encode_attrstatres(struct svc_rqst *, __be32 *);
 int nfssvc_encode_diropres(struct svc_rqst *, __be32 *);
diff --git a/fs/nfsd/xdr3.h b/fs/nfsd/xdr3.h
index 712c117300cb7..60a8909205e5a 100644
--- a/fs/nfsd/xdr3.h
+++ b/fs/nfsd/xdr3.h
@@ -265,21 +265,22 @@ union nfsd3_xdrstore {
#define NFS3_SVC_XDRSIZE		sizeof(union nfsd3_xdrstore)
-int nfs3svc_decode_fhandleargs(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_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_decode_fhandleargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_sattrargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_diropargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_accessargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_readargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_writeargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_createargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_mkdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_mknodargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_renameargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_linkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_symlinkargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_readdirargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_readdirplusargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int nfs3svc_decode_commitargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
 int nfs3svc_encode_getattrres(struct svc_rqst *, __be32 *);
 int nfs3svc_encode_wccstat(struct svc_rqst *, __be32 *);
 int nfs3svc_encode_lookupres(struct svc_rqst *, __be32 *);
diff --git a/fs/nfsd/xdr4.h b/fs/nfsd/xdr4.h
index 45257666a6888..4c22eecd65de0 100644
--- a/fs/nfsd/xdr4.h
+++ b/fs/nfsd/xdr4.h
@@ -757,7 +757,7 @@ 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_decode_compoundargs(struct svc_rqst *, __be32 *);
+int nfs4svc_decode_compoundargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
 int nfs4svc_encode_compoundres(struct svc_rqst *, __be32 *);
 __be32 nfsd4_check_resp_size(struct nfsd4_compoundres *, u32);
 void nfsd4_encode_operation(struct nfsd4_compoundres *, struct nfsd4_op *);
diff --git a/include/linux/lockd/xdr.h b/include/linux/lockd/xdr.h
index bed63156b0521..931bd0b064e6f 100644
--- a/include/linux/lockd/xdr.h
+++ b/include/linux/lockd/xdr.h
@@ -98,18 +98,19 @@ struct nlm_reboot {
  */
 #define NLMSVC_XDRSIZE		sizeof(struct nlm_args)
-int	nlmsvc_decode_testargs(struct svc_rqst *, __be32 *);
+int	nlmsvc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlmsvc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
 int	nlmsvc_encode_testres(struct svc_rqst *, __be32 *);
-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 *);
-int	nlmsvc_decode_res(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_void(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_void(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_shareargs(struct svc_rqst *, __be32 *);
 int	nlmsvc_encode_shareres(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_notify(struct svc_rqst *, __be32 *);
-int	nlmsvc_decode_reboot(struct svc_rqst *, __be32 *);
#endif /* LOCKD_XDR_H */
diff --git a/include/linux/lockd/xdr4.h b/include/linux/lockd/xdr4.h
index 025250ade98e2..44c9d03d261b9 100644
--- a/include/linux/lockd/xdr4.h
+++ b/include/linux/lockd/xdr4.h
@@ -22,22 +22,21 @@
 #define	nlm4_fbig		cpu_to_be32(NLM_FBIG)
 #define	nlm4_failed		cpu_to_be32(NLM_FAILED)
-
-
 void	nlm4svc_set_file_lock_range(struct file_lock *fl, u64 off, u64 len);
-int	nlm4svc_decode_testargs(struct svc_rqst *, __be32 *);
+int	nlm4svc_decode_void(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_testargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_lockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_cancargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_unlockargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_res(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_reboot(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_shareargs(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+int	nlm4svc_decode_notify(struct svc_rqst *rqstp, struct xdr_stream *xdr);
+
 int	nlm4svc_encode_testres(struct svc_rqst *, __be32 *);
-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 *);
-int	nlm4svc_decode_res(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_void(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_void(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_shareargs(struct svc_rqst *, __be32 *);
 int	nlm4svc_encode_shareres(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_notify(struct svc_rqst *, __be32 *);
-int	nlm4svc_decode_reboot(struct svc_rqst *, __be32 *);
extern const struct rpc_version nlm_version4;
diff --git a/include/linux/sunrpc/svc.h b/include/linux/sunrpc/svc.h
index 664a54e330af3..f74ac0fdd5f32 100644
--- a/include/linux/sunrpc/svc.h
+++ b/include/linux/sunrpc/svc.h
@@ -456,7 +456,8 @@ struct svc_procedure {
    /* process the request: */
    __be32			(*pc_func)(struct svc_rqst *);
    /* XDR decode args: */
-	int			(*pc_decode)(struct svc_rqst *, __be32 *data);
+	int			(*pc_decode)(struct svc_rqst *rqstp,
+					     struct xdr_stream *xdr);
    /* XDR encode result: */
    int			(*pc_encode)(struct svc_rqst *, __be32 *data);
    /* XDR free result: */
-- 
2.43.0





    

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[PATCH 5.15 204/690] SUNRPC: Replace the "__be32 *p" parameter to .pc_decode