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>

1 files changed, 3 insertions, 0 deletions

diff --git a/fs/nfs/super.c b/fs/nfs/super.c
index 3dfa4f112c0a..73aa75649bf8 100644
--- a/fs/nfs/super.c
+++ b/fs/nfs/super.c
@@ -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;