NFS: Reduce the stack footprint of nfs_create_server
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/client.c b/fs/nfs/client.c
index ac5ff21..7ec9b34 100644
--- a/fs/nfs/client.c
+++ b/fs/nfs/client.c
@@ -934,7 +934,6 @@
}
fsinfo.fattr = fattr;
- nfs_fattr_init(fattr);
error = clp->rpc_ops->fsinfo(server, mntfh, &fsinfo);
if (error < 0)
goto out_error;
@@ -1047,13 +1046,18 @@
struct nfs_fh *mntfh)
{
struct nfs_server *server;
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
int error;
server = nfs_alloc_server();
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
/* Get a client representation */
error = nfs_init_server(server, data);
if (error < 0)
@@ -1064,7 +1068,7 @@
BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops);
/* Probe the root fh to retrieve its FSID */
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
if (server->nfs_client->rpc_ops->version == 3) {
@@ -1077,14 +1081,14 @@
server->namelen = NFS2_MAXNAMLEN;
}
- if (!(fattr.valid & NFS_ATTR_FATTR)) {
- error = server->nfs_client->rpc_ops->getattr(server, mntfh, &fattr);
+ if (!(fattr->valid & NFS_ATTR_FATTR)) {
+ error = server->nfs_client->rpc_ops->getattr(server, mntfh, fattr);
if (error < 0) {
dprintk("nfs_create_server: getattr error = %d\n", -error);
goto error;
}
}
- memcpy(&server->fsid, &fattr.fsid, sizeof(server->fsid));
+ memcpy(&server->fsid, &fattr->fsid, sizeof(server->fsid));
dprintk("Server FSID: %llx:%llx\n",
(unsigned long long) server->fsid.major,
@@ -1096,9 +1100,11 @@
spin_unlock(&nfs_client_lock);
server->mount_time = jiffies;
+ nfs_free_fattr(fattr);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
return ERR_PTR(error);
}
@@ -1340,7 +1346,7 @@
struct nfs_server *nfs4_create_server(const struct nfs_parsed_mount_data *data,
struct nfs_fh *mntfh)
{
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
struct nfs_server *server;
int error;
@@ -1350,6 +1356,11 @@
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
/* set up the general RPC client */
error = nfs4_init_server(server, data);
if (error < 0)
@@ -1375,7 +1386,7 @@
nfs4_session_set_rwsize(server);
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
@@ -1389,9 +1400,11 @@
server->mount_time = jiffies;
dprintk("<-- nfs4_create_server() = %p\n", server);
+ nfs_free_fattr(fattr);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
dprintk("<-- nfs4_create_server() = error %d\n", error);
return ERR_PTR(error);
@@ -1405,7 +1418,7 @@
{
struct nfs_client *parent_client;
struct nfs_server *server, *parent_server;
- struct nfs_fattr fattr;
+ struct nfs_fattr *fattr;
int error;
dprintk("--> nfs4_create_referral_server()\n");
@@ -1414,6 +1427,11 @@
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr = nfs_alloc_fattr();
+ if (fattr == NULL)
+ goto error;
+
parent_server = NFS_SB(data->sb);
parent_client = parent_server->nfs_client;
@@ -1448,7 +1466,7 @@
goto error;
/* probe the filesystem info for this server filesystem */
- error = nfs_probe_fsinfo(server, mntfh, &fattr);
+ error = nfs_probe_fsinfo(server, mntfh, fattr);
if (error < 0)
goto error;
@@ -1466,10 +1484,12 @@
server->mount_time = jiffies;
+ nfs_free_fattr(fattr);
dprintk("<-- nfs_create_referral_server() = %p\n", server);
return server;
error:
+ nfs_free_fattr(fattr);
nfs_free_server(server);
dprintk("<-- nfs4_create_referral_server() = error %d\n", error);
return ERR_PTR(error);
@@ -1485,7 +1505,7 @@
struct nfs_fattr *fattr)
{
struct nfs_server *server;
- struct nfs_fattr fattr_fsinfo;
+ struct nfs_fattr *fattr_fsinfo;
int error;
dprintk("--> nfs_clone_server(,%llx:%llx,)\n",
@@ -1496,6 +1516,11 @@
if (!server)
return ERR_PTR(-ENOMEM);
+ error = -ENOMEM;
+ fattr_fsinfo = nfs_alloc_fattr();
+ if (fattr_fsinfo == NULL)
+ goto out_free_server;
+
/* Copy data from the source */
server->nfs_client = source->nfs_client;
atomic_inc(&server->nfs_client->cl_count);
@@ -1512,7 +1537,7 @@
nfs_init_server_aclclient(server);
/* probe the filesystem info for this server filesystem */
- error = nfs_probe_fsinfo(server, fh, &fattr_fsinfo);
+ error = nfs_probe_fsinfo(server, fh, fattr_fsinfo);
if (error < 0)
goto out_free_server;
@@ -1534,10 +1559,12 @@
server->mount_time = jiffies;
+ nfs_free_fattr(fattr_fsinfo);
dprintk("<-- nfs_clone_server() = %p\n", server);
return server;
out_free_server:
+ nfs_free_fattr(fattr_fsinfo);
nfs_free_server(server);
dprintk("<-- nfs_clone_server() = error %d\n", error);
return ERR_PTR(error);