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Subject[PATCH 2/2] SUNRPC: RPC pipefs virtualization
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Parametrize rpc_mount_get() and rpc_mount_put() with network namespace pointer.
Currently init_net is used, but later proper network context will be used
instead.
It actually means, that in future NFS cache have to be virtualied as well.

Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>

---
fs/nfs/blocklayout/blocklayout.c | 2 +-
fs/nfs/cache_lib.c | 7 ++++---
net/sunrpc/clnt.c | 8 ++++----
3 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/blocklayout/blocklayout.c b/fs/nfs/blocklayout/blocklayout.c
index 9561c8f..9904e70 100644
--- a/fs/nfs/blocklayout/blocklayout.c
+++ b/fs/nfs/blocklayout/blocklayout.c
@@ -979,7 +979,7 @@ static int __init nfs4blocklayout_init(void)

init_waitqueue_head(&bl_wq);

- mnt = rpc_get_mount();
+ mnt = rpc_get_mount(&init_net);
if (IS_ERR(mnt)) {
ret = PTR_ERR(mnt);
goto out_remove;
diff --git a/fs/nfs/cache_lib.c b/fs/nfs/cache_lib.c
index c98b439..777514b 100644
--- a/fs/nfs/cache_lib.c
+++ b/fs/nfs/cache_lib.c
@@ -11,6 +11,7 @@
#include <linux/mount.h>
#include <linux/namei.h>
#include <linux/slab.h>
+#include <net/net_namespace.h>
#include <linux/sunrpc/cache.h>
#include <linux/sunrpc/rpc_pipe_fs.h>

@@ -117,7 +118,7 @@ int nfs_cache_register(struct cache_detail *cd)
struct path path;
int ret;

- mnt = rpc_get_mount();
+ mnt = rpc_get_mount(&init_net);
if (IS_ERR(mnt))
return PTR_ERR(mnt);
ret = vfs_path_lookup(mnt->mnt_root, mnt, "/cache", 0, &path);
@@ -128,13 +129,13 @@ int nfs_cache_register(struct cache_detail *cd)
if (!ret)
return ret;
err:
- rpc_put_mount();
+ rpc_put_mount(&init_net);
return ret;
}

void nfs_cache_unregister(struct cache_detail *cd)
{
sunrpc_cache_unregister_pipefs(cd);
- rpc_put_mount();
+ rpc_put_mount(&init_net);
}

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index c5347d2..4bebcc0 100644
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -109,7 +109,7 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name)
if (dir_name == NULL)
return 0;

- path.mnt = rpc_get_mount();
+ path.mnt = rpc_get_mount(clnt->cl_xprt->xprt_net);
if (IS_ERR(path.mnt))
return PTR_ERR(path.mnt);
error = vfs_path_lookup(path.mnt->mnt_root, path.mnt, dir_name, 0, &dir);
@@ -137,7 +137,7 @@ rpc_setup_pipedir(struct rpc_clnt *clnt, char *dir_name)
err_path_put:
path_put(&dir);
err:
- rpc_put_mount();
+ rpc_put_mount(clnt->cl_xprt->xprt_net);
return error;
}

@@ -248,7 +248,7 @@ static struct rpc_clnt * rpc_new_client(const struct rpc_create_args *args, stru
out_no_auth:
if (!IS_ERR(clnt->cl_path.dentry)) {
rpc_remove_client_dir(clnt->cl_path.dentry);
- rpc_put_mount();
+ rpc_put_mount(clnt->cl_xprt->xprt_net);
}
out_no_path:
kfree(clnt->cl_principal);
@@ -476,7 +476,7 @@ rpc_free_client(struct rpc_clnt *clnt)
clnt->cl_protname, clnt->cl_server);
if (!IS_ERR(clnt->cl_path.dentry)) {
rpc_remove_client_dir(clnt->cl_path.dentry);
- rpc_put_mount();
+ rpc_put_mount(clnt->cl_xprt->xprt_net);
}
if (clnt->cl_parent != clnt) {
rpc_release_client(clnt->cl_parent);


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