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>
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 @@
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 @@
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 @@
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 @@
.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 @@
.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 @@
.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 @@
.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 @@
.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 @@
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 @@
.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 @@
.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 @@
.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 @@
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 @@
.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 @@
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 @@
.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 @@
.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 @@
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 @@
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 @@
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 @@
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;
}