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linux-sg2042
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NFS: make NFS client allocated per network namespace context 

This patch adds new net variable to nfs_client structure. This variable is set
on NFS client creation and cheched during matching NFS client search.
Initially current->nsproxy->net_ns is used as network namespace owner for new
NFS client to create. This network namespace pointer is set during mount
options parsing and thus can be passed from user-spave utils in future if will
be necessary.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
Stanislav Kinsbursky 2012-01-10 16:12:46 +04:00 committed by Trond Myklebust
parent ad6b134008
commit e50a7a1a42
4 changed files with 18 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
fs/nfs/client.c
View File

@ -135,6 +135,7 @@ struct nfs_client_initdata {
const struct nfs_rpc_ops *rpc_ops;
int proto;
u32 minorversion;
struct net *net;
};
/*
@ -189,6 +190,7 @@ static struct nfs_client *nfs_alloc_client(const struct nfs_client_initdata *cl_
if (!IS_ERR(cred))
clp->cl_machine_cred = cred;
nfs_fscache_get_client_cookie(clp);
clp->net = cl_init->net;
return clp;
@ -481,6 +483,9 @@ static struct nfs_client *nfs_match_client(const struct nfs_client_initdata *dat
/* Match the full socket address */
if (!nfs_sockaddr_cmp(sap, clap))
continue;
/* Match network namespace */
if (clp->net != data->net)
continue;
atomic_inc(&clp->cl_count);
return clp;
@ -831,6 +836,7 @@ static int nfs_init_server(struct nfs_server *server,
.addrlen = data->nfs_server.addrlen,
.rpc_ops = &nfs_v2_clientops,
.proto = data->nfs_server.protocol,
.net = data->net,
};
struct rpc_timeout timeparms;
struct nfs_client *clp;
@ -1393,7 +1399,7 @@ static int nfs4_set_client(struct nfs_server *server,
const char *ip_addr,
rpc_authflavor_t authflavour,
int proto, const struct rpc_timeout *timeparms,
u32 minorversion)
u32 minorversion, struct net *net)
{
struct nfs_client_initdata cl_init = {
.hostname = hostname,
@ -1402,6 +1408,7 @@ static int nfs4_set_client(struct nfs_server *server,
.rpc_ops = &nfs_v4_clientops,
.proto = proto,
.minorversion = minorversion,
.net = net,
};
struct nfs_client *clp;
int error;
@ -1453,6 +1460,7 @@ struct nfs_client *nfs4_set_ds_client(struct nfs_client* mds_clp,
.rpc_ops = &nfs_v4_clientops,
.proto = ds_proto,
.minorversion = mds_clp->cl_minorversion,
.net = mds_clp->net,
};
struct rpc_timeout ds_timeout = {
.to_initval = 15 * HZ,
@ -1580,7 +1588,8 @@ static int nfs4_init_server(struct nfs_server *server,
data->auth_flavors[0],
data->nfs_server.protocol,
&timeparms,
data->minorversion);
data->minorversion,
data->net);
if (error < 0)
goto error;
@ -1677,7 +1686,8 @@ struct nfs_server *nfs4_create_referral_server(struct nfs_clone_mount *data,
data->authflavor,
parent_server->client->cl_xprt->prot,
parent_server->client->cl_timeout,
parent_client->cl_mvops->minor_version);
parent_client->cl_mvops->minor_version,
parent_client->net);
if (error < 0)
goto error;

1
fs/nfs/internal.h
View File

@ -123,6 +123,7 @@ struct nfs_parsed_mount_data {
} nfs_server;
struct security_mnt_opts lsm_opts;
struct net *net;
};
/* mount_clnt.c */

3
fs/nfs/super.c
View File

@ -52,6 +52,7 @@
#include <linux/nfs_xdr.h>
#include <linux/magic.h>
#include <linux/parser.h>
#include <linux/nsproxy.h>
#include <asm/system.h>
#include <asm/uaccess.h>
@ -1107,6 +1108,8 @@ static int nfs_parse_mount_options(char *raw,
free_secdata(secdata);
mnt->net = current->nsproxy->net_ns;
while ((p = strsep(&raw, ",")) != NULL) {
substring_t args[MAX_OPT_ARGS];
unsigned long option;

1
include/linux/nfs_fs_sb.h
View File

@ -85,6 +85,7 @@ struct nfs_client {
#endif
struct server_scope *server_scope; /* from exchange_id */
struct net *net;
};
/*