SUNRPC: eliminate rpc_call()

Clean-up: replace rpc_call() helper with direct call to rpc_call_sync.

This makes NFSv2 and NFSv3 synchronous calls more computationally
efficient, and reduces stack consumption in functions that used to
invoke rpc_call more than once.

Test plan:
Compile kernel with CONFIG_NFS enabled.  Connectathon on NFS version 2,
version 3, and version 4 mount points.

Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

4 files changed, 209 insertions, 67 deletions

diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 4a13403..c44d87b 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -49,9 +49,12 @@ nfsroot_mount(struct sockaddr_in *addr, char *path, struct nfs_fh *fh,
 	struct mnt_fhstatus	result = {
 		.fh		= fh
 	};
+	struct rpc_message msg	= {
+		.rpc_argp	= path,
+		.rpc_resp	= &result,
+	};
 	char			hostname[32];
 	int			status;
-	int			call;
 
 	dprintk("NFS:      nfs_mount(%08x:%s)\n",
 			(unsigned)ntohl(addr->sin_addr.s_addr), path);
@@ -61,8 +64,12 @@ nfsroot_mount(struct sockaddr_in *addr, char *path, struct nfs_fh *fh,
 	if (IS_ERR(mnt_clnt))
 		return PTR_ERR(mnt_clnt);
 
-	call = (version == NFS_MNT3_VERSION) ? MOUNTPROC3_MNT : MNTPROC_MNT;
-	status = rpc_call(mnt_clnt, call, path, &result, 0);
+	if (version == NFS_MNT3_VERSION)
+		msg.rpc_proc = &mnt_clnt->cl_procinfo[MOUNTPROC3_MNT];
+	else
+		msg.rpc_proc = &mnt_clnt->cl_procinfo[MNTPROC_MNT];
+
+	status = rpc_call_sync(mnt_clnt, &msg, 0);
 	return status < 0? status : (result.status? -EACCES : 0);
 }
 
diff --git a/fs/nfs/nfs3acl.c b/fs/nfs/nfs3acl.c
index 6a5bbc0..3328787 100644
--- a/fs/nfs/nfs3acl.c
+++ b/fs/nfs/nfs3acl.c
@@ -190,6 +190,10 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
 	struct nfs3_getaclres res = {
 		.fattr =	&fattr,
 	};
+	struct rpc_message msg = {
+		.rpc_argp	= &args,
+		.rpc_resp	= &res,
+	};
 	struct posix_acl *acl;
 	int status, count;
 
@@ -218,8 +222,8 @@ struct posix_acl *nfs3_proc_getacl(struct inode *inode, int type)
 		return NULL;
 
 	dprintk("NFS call getacl\n");
-	status = rpc_call(server->client_acl, ACLPROC3_GETACL,
-			  &args, &res, 0);
+	msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_GETACL];
+	status = rpc_call_sync(server->client_acl, &msg, 0);
 	dprintk("NFS reply getacl: %d\n", status);
 
 	/* pages may have been allocated at the xdr layer. */
@@ -286,6 +290,10 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
 		.acl_access = acl,
 		.pages = pages,
 	};
+	struct rpc_message msg = {
+		.rpc_argp	= &args,
+		.rpc_resp	= &fattr,
+	};
 	int status, count;
 
 	status = -EOPNOTSUPP;
@@ -306,8 +314,8 @@ static int nfs3_proc_setacls(struct inode *inode, struct posix_acl *acl,
 
 	dprintk("NFS call setacl\n");
 	nfs_begin_data_update(inode);
-	status = rpc_call(server->client_acl, ACLPROC3_SETACL,
-			  &args, &fattr, 0);
+	msg.rpc_proc = &server->client_acl->cl_procinfo[ACLPROC3_SETACL];
+	status = rpc_call_sync(server->client_acl, &msg, 0);
 	spin_lock(&inode->i_lock);
 	NFS_I(inode)->cache_validity |= NFS_INO_INVALID_ACCESS;
 	spin_unlock(&inode->i_lock);
diff --git a/fs/nfs/nfs3proc.c b/fs/nfs/nfs3proc.c
index 7204ba5..740f8b1 100644
--- a/fs/nfs/nfs3proc.c
+++ b/fs/nfs/nfs3proc.c
@@ -43,21 +43,7 @@ nfs3_rpc_wrapper(struct rpc_clnt *clnt, struct rpc_message *msg, int flags)
 	return res;
 }
 
-static inline int
-nfs3_rpc_call_wrapper(struct rpc_clnt *clnt, u32 proc, void *argp, void *resp, int flags)
-{
-	struct rpc_message msg = {
-		.rpc_proc	= &clnt->cl_procinfo[proc],
-		.rpc_argp	= argp,
-		.rpc_resp	= resp,
-	};
-	return nfs3_rpc_wrapper(clnt, &msg, flags);
-}
-
-#define rpc_call(clnt, proc, argp, resp, flags) \
-		nfs3_rpc_call_wrapper(clnt, proc, argp, resp, flags)
-#define rpc_call_sync(clnt, msg, flags) \
-		nfs3_rpc_wrapper(clnt, msg, flags)
+#define rpc_call_sync(clnt, msg, flags)	nfs3_rpc_wrapper(clnt, msg, flags)
 
 static int
 nfs3_async_handle_jukebox(struct rpc_task *task, struct inode *inode)
@@ -75,14 +61,21 @@ static int
 do_proc_get_root(struct rpc_clnt *client, struct nfs_fh *fhandle,
 		 struct nfs_fsinfo *info)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_FSINFO],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= info,
+	};
 	int	status;
 
 	dprintk("%s: call  fsinfo\n", __FUNCTION__);
 	nfs_fattr_init(info->fattr);
-	status = rpc_call(client, NFS3PROC_FSINFO, fhandle, info, 0);
+	status = rpc_call_sync(client, &msg, 0);
 	dprintk("%s: reply fsinfo: %d\n", __FUNCTION__, status);
 	if (!(info->fattr->valid & NFS_ATTR_FATTR)) {
-		status = rpc_call(client, NFS3PROC_GETATTR, fhandle, info->fattr, 0);
+		msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
+		msg.rpc_resp = info->fattr;
+		status = rpc_call_sync(client, &msg, 0);
 		dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
 	}
 	return status;
@@ -110,12 +103,16 @@ static int
 nfs3_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
 		struct nfs_fattr *fattr)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_GETATTR],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= fattr,
+	};
 	int	status;
 
 	dprintk("NFS call  getattr\n");
 	nfs_fattr_init(fattr);
-	status = rpc_call(server->client, NFS3PROC_GETATTR,
-			  fhandle, fattr, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply getattr: %d\n", status);
 	return status;
 }
@@ -129,11 +126,16 @@ nfs3_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 		.fh		= NFS_FH(inode),
 		.sattr		= sattr,
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_SETATTR],
+		.rpc_argp	= &arg,
+		.rpc_resp	= fattr,
+	};
 	int	status;
 
 	dprintk("NFS call  setattr\n");
 	nfs_fattr_init(fattr);
-	status = rpc_call(NFS_CLIENT(inode), NFS3PROC_SETATTR, &arg, fattr, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	if (status == 0)
 		nfs_setattr_update_inode(inode, sattr);
 	dprintk("NFS reply setattr: %d\n", status);
@@ -155,15 +157,23 @@ nfs3_proc_lookup(struct inode *dir, struct qstr *name,
 		.fh		= fhandle,
 		.fattr		= fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_LOOKUP],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	dprintk("NFS call  lookup %s\n", name->name);
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_LOOKUP, &arg, &res, 0);
-	if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR))
-		status = rpc_call(NFS_CLIENT(dir), NFS3PROC_GETATTR,
-			 fhandle, fattr, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+	if (status >= 0 && !(fattr->valid & NFS_ATTR_FATTR)) {
+		msg.rpc_proc = &nfs3_procedures[NFS3PROC_GETATTR];
+		msg.rpc_argp = fhandle;
+		msg.rpc_resp = fattr;
+		status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+	}
 	dprintk("NFS reply lookup: %d\n", status);
 	if (status >= 0)
 		status = nfs_refresh_inode(dir, &dir_attr);
@@ -183,7 +193,7 @@ static int nfs3_proc_access(struct inode *inode, struct nfs_access_entry *entry)
 		.rpc_proc	= &nfs3_procedures[NFS3PROC_ACCESS],
 		.rpc_argp	= &arg,
 		.rpc_resp	= &res,
-		.rpc_cred	= entry->cred
+		.rpc_cred	= entry->cred,
 	};
 	int mode = entry->mask;
 	int status;
@@ -229,12 +239,16 @@ static int nfs3_proc_readlink(struct inode *inode, struct page *page,
 		.pglen		= pglen,
 		.pages		= &page
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_READLINK],
+		.rpc_argp	= &args,
+		.rpc_resp	= &fattr,
+	};
 	int			status;
 
 	dprintk("NFS call  readlink\n");
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(inode), NFS3PROC_READLINK,
-			  &args, &fattr, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	nfs_refresh_inode(inode, &fattr);
 	dprintk("NFS reply readlink: %d\n", status);
 	return status;
@@ -330,6 +344,11 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		.fh		= &fhandle,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_CREATE],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	mode_t mode = sattr->ia_mode;
 	int status;
 
@@ -346,8 +365,8 @@ nfs3_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 again:
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_CREATE, &arg, &res, 0);
-	nfs_post_op_update_inode(dir, &dir_attr);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
+	nfs_refresh_inode(dir, &dir_attr);
 
 	/* If the server doesn't support the exclusive creation semantics,
 	 * try again with simple 'guarded' mode. */
@@ -477,12 +496,17 @@ nfs3_proc_rename(struct inode *old_dir, struct qstr *old_name,
 		.fromattr	= &old_dir_attr,
 		.toattr		= &new_dir_attr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_RENAME],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
 	nfs_fattr_init(&old_dir_attr);
 	nfs_fattr_init(&new_dir_attr);
-	status = rpc_call(NFS_CLIENT(old_dir), NFS3PROC_RENAME, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
 	nfs_post_op_update_inode(old_dir, &old_dir_attr);
 	nfs_post_op_update_inode(new_dir, &new_dir_attr);
 	dprintk("NFS reply rename: %d\n", status);
@@ -503,12 +527,17 @@ nfs3_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 		.dir_attr	= &dir_attr,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_LINK],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	dprintk("NFS call  link %s\n", name->name);
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(inode), NFS3PROC_LINK, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	nfs_post_op_update_inode(dir, &dir_attr);
 	nfs_post_op_update_inode(inode, &fattr);
 	dprintk("NFS reply link: %d\n", status);
@@ -534,6 +563,11 @@ nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 		.fh		= fhandle,
 		.fattr		= fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_SYMLINK],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	if (path->len > NFS3_MAXPATHLEN)
@@ -541,7 +575,7 @@ nfs3_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 	dprintk("NFS call  symlink %s -> %s\n", name->name, path->name);
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_SYMLINK, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_post_op_update_inode(dir, &dir_attr);
 	dprintk("NFS reply symlink: %d\n", status);
 	return status;
@@ -563,6 +597,11 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 		.fh		= &fhandle,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_MKDIR],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int mode = sattr->ia_mode;
 	int status;
 
@@ -572,7 +611,7 @@ nfs3_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKDIR, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_post_op_update_inode(dir, &dir_attr);
 	if (status != 0)
 		goto out;
@@ -594,11 +633,16 @@ nfs3_proc_rmdir(struct inode *dir, struct qstr *name)
 		.name		= name->name,
 		.len		= name->len
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_RMDIR],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &dir_attr,
+	};
 	int			status;
 
 	dprintk("NFS call  rmdir %s\n", name->name);
 	nfs_fattr_init(&dir_attr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_RMDIR, &arg, &dir_attr, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_post_op_update_inode(dir, &dir_attr);
 	dprintk("NFS reply rmdir: %d\n", status);
 	return status;
@@ -675,6 +719,11 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		.fh		= &fh,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_MKNOD],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	mode_t mode = sattr->ia_mode;
 	int status;
 
@@ -693,7 +742,7 @@ nfs3_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 
 	nfs_fattr_init(&dir_attr);
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFS3PROC_MKNOD, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_post_op_update_inode(dir, &dir_attr);
 	if (status != 0)
 		goto out;
@@ -710,11 +759,16 @@ static int
 nfs3_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 		 struct nfs_fsstat *stat)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_FSSTAT],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= stat,
+	};
 	int	status;
 
 	dprintk("NFS call  fsstat\n");
 	nfs_fattr_init(stat->fattr);
-	status = rpc_call(server->client, NFS3PROC_FSSTAT, fhandle, stat, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply statfs: %d\n", status);
 	return status;
 }
@@ -723,11 +777,16 @@ static int
 nfs3_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 		 struct nfs_fsinfo *info)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_FSINFO],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= info,
+	};
 	int	status;
 
 	dprintk("NFS call  fsinfo\n");
 	nfs_fattr_init(info->fattr);
-	status = rpc_call(server->client_sys, NFS3PROC_FSINFO, fhandle, info, 0);
+	status = rpc_call_sync(server->client_sys, &msg, 0);
 	dprintk("NFS reply fsinfo: %d\n", status);
 	return status;
 }
@@ -736,11 +795,16 @@ static int
 nfs3_proc_pathconf(struct nfs_server *server, struct nfs_fh *fhandle,
 		   struct nfs_pathconf *info)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs3_procedures[NFS3PROC_PATHCONF],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= info,
+	};
 	int	status;
 
 	dprintk("NFS call  pathconf\n");
 	nfs_fattr_init(info->fattr);
-	status = rpc_call(server->client, NFS3PROC_PATHCONF, fhandle, info, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply pathconf: %d\n", status);
 	return status;
 }
diff --git a/fs/nfs/proc.c b/fs/nfs/proc.c
index f5150d7..2b051ab 100644
--- a/fs/nfs/proc.c
+++ b/fs/nfs/proc.c
@@ -58,16 +58,23 @@ nfs_proc_get_root(struct nfs_server *server, struct nfs_fh *fhandle,
 {
 	struct nfs_fattr *fattr = info->fattr;
 	struct nfs2_fsstat fsinfo;
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_GETATTR],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= fattr,
+	};
 	int status;
 
 	dprintk("%s: call getattr\n", __FUNCTION__);
 	nfs_fattr_init(fattr);
-	status = rpc_call(server->client_sys, NFSPROC_GETATTR, fhandle, fattr, 0);
+	status = rpc_call_sync(server->client_sys, &msg, 0);
 	dprintk("%s: reply getattr: %d\n", __FUNCTION__, status);
 	if (status)
 		return status;
 	dprintk("%s: call statfs\n", __FUNCTION__);
-	status = rpc_call(server->client_sys, NFSPROC_STATFS, fhandle, &fsinfo, 0);
+	msg.rpc_proc = &nfs_procedures[NFSPROC_STATFS];
+	msg.rpc_resp = &fsinfo;
+	status = rpc_call_sync(server->client_sys, &msg, 0);
 	dprintk("%s: reply statfs: %d\n", __FUNCTION__, status);
 	if (status)
 		return status;
@@ -90,12 +97,16 @@ static int
 nfs_proc_getattr(struct nfs_server *server, struct nfs_fh *fhandle,
 		struct nfs_fattr *fattr)
 {
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_GETATTR],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= fattr,
+	};
 	int	status;
 
 	dprintk("NFS call  getattr\n");
 	nfs_fattr_init(fattr);
-	status = rpc_call(server->client, NFSPROC_GETATTR,
-				fhandle, fattr, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply getattr: %d\n", status);
 	return status;
 }
@@ -109,6 +120,11 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 		.fh	= NFS_FH(inode),
 		.sattr	= sattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_SETATTR],
+		.rpc_argp	= &arg,
+		.rpc_resp	= fattr,
+	};
 	int	status;
 
 	/* Mask out the non-modebit related stuff from attr->ia_mode */
@@ -116,7 +132,7 @@ nfs_proc_setattr(struct dentry *dentry, struct nfs_fattr *fattr,
 
 	dprintk("NFS call  setattr\n");
 	nfs_fattr_init(fattr);
-	status = rpc_call(NFS_CLIENT(inode), NFSPROC_SETATTR, &arg, fattr, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	if (status == 0)
 		nfs_setattr_update_inode(inode, sattr);
 	dprintk("NFS reply setattr: %d\n", status);
@@ -136,11 +152,16 @@ nfs_proc_lookup(struct inode *dir, struct qstr *name,
 		.fh		= fhandle,
 		.fattr		= fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_LOOKUP],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	dprintk("NFS call  lookup %s\n", name->name);
 	nfs_fattr_init(fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_LOOKUP, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	dprintk("NFS reply lookup: %d\n", status);
 	return status;
 }
@@ -154,10 +175,14 @@ static int nfs_proc_readlink(struct inode *inode, struct page *page,
 		.pglen		= pglen,
 		.pages		= &page
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_READLINK],
+		.rpc_argp	= &args,
+	};
 	int			status;
 
 	dprintk("NFS call  readlink\n");
-	status = rpc_call(NFS_CLIENT(inode), NFSPROC_READLINK, &args, NULL, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	dprintk("NFS reply readlink: %d\n", status);
 	return status;
 }
@@ -233,11 +258,16 @@ nfs_proc_create(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		.fh		= &fhandle,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_CREATE],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	nfs_fattr_init(&fattr);
 	dprintk("NFS call  create %s\n", dentry->d_name.name);
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	if (status == 0)
 		status = nfs_instantiate(dentry, &fhandle, &fattr);
 	dprintk("NFS reply create: %d\n", status);
@@ -263,6 +293,11 @@ nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 		.fh		= &fhandle,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_CREATE],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int status, mode;
 
 	dprintk("NFS call  mknod %s\n", dentry->d_name.name);
@@ -277,13 +312,13 @@ nfs_proc_mknod(struct inode *dir, struct dentry *dentry, struct iattr *sattr,
 	}
 
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_mark_for_revalidate(dir);
 
 	if (status == -EINVAL && S_ISFIFO(mode)) {
 		sattr->ia_mode = mode;
 		nfs_fattr_init(&fattr);
-		status = rpc_call(NFS_CLIENT(dir), NFSPROC_CREATE, &arg, &res, 0);
+		status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	}
 	if (status == 0)
 		status = nfs_instantiate(dentry, &fhandle, &fattr);
@@ -302,8 +337,6 @@ nfs_proc_remove(struct inode *dir, struct qstr *name)
 	struct rpc_message	msg = { 
 		.rpc_proc	= &nfs_procedures[NFSPROC_REMOVE],
 		.rpc_argp	= &arg,
-		.rpc_resp	= NULL,
-		.rpc_cred	= NULL
 	};
 	int			status;
 
@@ -355,10 +388,14 @@ nfs_proc_rename(struct inode *old_dir, struct qstr *old_name,
 		.toname		= new_name->name,
 		.tolen		= new_name->len
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_RENAME],
+		.rpc_argp	= &arg,
+	};
 	int			status;
 
 	dprintk("NFS call  rename %s -> %s\n", old_name->name, new_name->name);
-	status = rpc_call(NFS_CLIENT(old_dir), NFSPROC_RENAME, &arg, NULL, 0);
+	status = rpc_call_sync(NFS_CLIENT(old_dir), &msg, 0);
 	nfs_mark_for_revalidate(old_dir);
 	nfs_mark_for_revalidate(new_dir);
 	dprintk("NFS reply rename: %d\n", status);
@@ -374,10 +411,14 @@ nfs_proc_link(struct inode *inode, struct inode *dir, struct qstr *name)
 		.toname		= name->name,
 		.tolen		= name->len
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_LINK],
+		.rpc_argp	= &arg,
+	};
 	int			status;
 
 	dprintk("NFS call  link %s\n", name->name);
-	status = rpc_call(NFS_CLIENT(inode), NFSPROC_LINK, &arg, NULL, 0);
+	status = rpc_call_sync(NFS_CLIENT(inode), &msg, 0);
 	nfs_mark_for_revalidate(inode);
 	nfs_mark_for_revalidate(dir);
 	dprintk("NFS reply link: %d\n", status);
@@ -397,6 +438,10 @@ nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 		.tolen		= path->len,
 		.sattr		= sattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_SYMLINK],
+		.rpc_argp	= &arg,
+	};
 	int			status;
 
 	if (path->len > NFS2_MAXPATHLEN)
@@ -404,7 +449,7 @@ nfs_proc_symlink(struct inode *dir, struct qstr *name, struct qstr *path,
 	dprintk("NFS call  symlink %s -> %s\n", name->name, path->name);
 	nfs_fattr_init(fattr);
 	fhandle->size = 0;
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_SYMLINK, &arg, NULL, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_mark_for_revalidate(dir);
 	dprintk("NFS reply symlink: %d\n", status);
 	return status;
@@ -425,11 +470,16 @@ nfs_proc_mkdir(struct inode *dir, struct dentry *dentry, struct iattr *sattr)
 		.fh		= &fhandle,
 		.fattr		= &fattr
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_MKDIR],
+		.rpc_argp	= &arg,
+		.rpc_resp	= &res,
+	};
 	int			status;
 
 	dprintk("NFS call  mkdir %s\n", dentry->d_name.name);
 	nfs_fattr_init(&fattr);
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_MKDIR, &arg, &res, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_mark_for_revalidate(dir);
 	if (status == 0)
 		status = nfs_instantiate(dentry, &fhandle, &fattr);
@@ -445,10 +495,14 @@ nfs_proc_rmdir(struct inode *dir, struct qstr *name)
 		.name		= name->name,
 		.len		= name->len
 	};
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_RMDIR],
+		.rpc_argp	= &arg,
+	};
 	int			status;
 
 	dprintk("NFS call  rmdir %s\n", name->name);
-	status = rpc_call(NFS_CLIENT(dir), NFSPROC_RMDIR, &arg, NULL, 0);
+	status = rpc_call_sync(NFS_CLIENT(dir), &msg, 0);
 	nfs_mark_for_revalidate(dir);
 	dprintk("NFS reply rmdir: %d\n", status);
 	return status;
@@ -470,13 +524,12 @@ nfs_proc_readdir(struct dentry *dentry, struct rpc_cred *cred,
 		.fh		= NFS_FH(dir),
 		.cookie		= cookie,
 		.count		= count,
-		.pages		= &page
+		.pages		= &page,
 	};
 	struct rpc_message	msg = {
 		.rpc_proc	= &nfs_procedures[NFSPROC_READDIR],
 		.rpc_argp	= &arg,
-		.rpc_resp	= NULL,
-		.rpc_cred	= cred
+		.rpc_cred	= cred,
 	};
 	int			status;
 
@@ -495,11 +548,16 @@ nfs_proc_statfs(struct nfs_server *server, struct nfs_fh *fhandle,
 			struct nfs_fsstat *stat)
 {
 	struct nfs2_fsstat fsinfo;
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_STATFS],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= &fsinfo,
+	};
 	int	status;
 
 	dprintk("NFS call  statfs\n");
 	nfs_fattr_init(stat->fattr);
-	status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply statfs: %d\n", status);
 	if (status)
 		goto out;
@@ -518,11 +576,16 @@ nfs_proc_fsinfo(struct nfs_server *server, struct nfs_fh *fhandle,
 			struct nfs_fsinfo *info)
 {
 	struct nfs2_fsstat fsinfo;
+	struct rpc_message msg = {
+		.rpc_proc	= &nfs_procedures[NFSPROC_STATFS],
+		.rpc_argp	= fhandle,
+		.rpc_resp	= &fsinfo,
+	};
 	int	status;
 
 	dprintk("NFS call  fsinfo\n");
 	nfs_fattr_init(info->fattr);
-	status = rpc_call(server->client, NFSPROC_STATFS, fhandle, &fsinfo, 0);
+	status = rpc_call_sync(server->client, &msg, 0);
 	dprintk("NFS reply fsinfo: %d\n", status);
 	if (status)
 		goto out;