| [PATCH 5/6] NFS: handle NFS idmap pipe PipeFS dentries by network namespace aware routines [message #44268 is a reply to message #44265] |
Mon, 28 November 2011 13:38   |
Stanislav Kinsbursky
Messages: 683
Registered: October 2011
|
Senior Member |
|
|
This patch makes NFS idmap pipes dentries allocated and destroyed in network
namespace context by PipeFS network namespace aware routines.
Network namespace context is obtained from nfs_client structure.
Signed-off-by: Stanislav Kinsbursky <skinsbursky@parallels.com>
---
fs/nfs/idmap.c | 61 +++++++++++++++++++++++++++++++++++++++++++++++++-------
1 files changed, 53 insertions(+), 8 deletions(-)
diff --git a/fs/nfs/idmap.c b/fs/nfs/idmap.c
index 60698a1..0680f63 100644
--- a/fs/nfs/idmap.c
+++ b/fs/nfs/idmap.c
@@ -350,6 +350,56 @@ static const struct rpc_pipe_ops idmap_upcall_ops = {
.destroy_msg = idmap_pipe_destroy_msg,
};
+static void __nfs_idmap_unregister(struct rpc_pipe *pipe)
+{
+ if (pipe->dentry)
+ rpc_unlink(pipe->dentry);
+}
+
+static int __nfs_idmap_register(struct dentry *dir,
+ struct idmap *idmap,
+ struct rpc_pipe *pipe)
+{
+ struct dentry *dentry;
+
+ dentry = rpc_mkpipe_dentry(dir, "idmap", idmap, pipe);
+ if (IS_ERR(dentry))
+ return PTR_ERR(dentry);
+ pipe->dentry = dentry;
+ return 0;
+}
+
+static void nfs_idmap_unregister(struct nfs_client *clp,
+ struct rpc_pipe *pipe)
+{
+ struct net *net = clp->net;
+ struct super_block *pipefs_sb;
+
+ pipefs_sb = rpc_get_sb_net(net);
+ if (pipefs_sb) {
+ __nfs_idmap_unregister(pipe);
+ rpc_put_sb_net(net);
+ }
+}
+
+static int nfs_idmap_register(struct nfs_client *clp,
+ struct idmap *idmap,
+ struct rpc_pipe *pipe)
+{
+ struct net *net = clp->net;
+ struct super_block *pipefs_sb;
+ int err = 0;
+
+ pipefs_sb = rpc_get_sb_net(net);
+ if (pipefs_sb) {
+ if (clp->cl_rpcclient->cl_dentry)
+ err = __nfs_idmap_register(clp->cl_rpcclient->cl_dentry,
+ idmap, pipe);
+ rpc_put_sb_net(net);
+ }
+ return err;
+}
+
int
nfs_idmap_new(struct nfs_client *clp)
{
@@ -369,12 +419,8 @@ nfs_idmap_new(struct nfs_client *clp)
kfree(idmap);
return error;
}
-
- if (clp->cl_rpcclient->cl_dentry)
- pipe->dentry = rpc_mkpipe_dentry(clp->cl_rpcclient->cl_dentry,
- "idmap", idmap, pipe);
- if (IS_ERR(pipe->dentry)) {
- error = PTR_ERR(pipe->dentry);
+ error = nfs_idmap_register(clp, idmap, pipe);
+ if (error) {
rpc_destroy_pipe_data(pipe);
kfree(idmap);
return error;
@@ -397,8 +443,7 @@ nfs_idmap_delete(struct nfs_client *clp)
if (!idmap)
return;
- if (idmap->idmap_pipe->dentry)
- rpc_unlink(idmap->idmap_pipe->dentry);
+ nfs_idmap_unregister(clp, idmap->idmap_pipe);
rpc_destroy_pipe_data(idmap->idmap_pipe);
clp->cl_idmap = NULL;
kfree(idmap);
|
|
|
|
OpenVZ Forum
Members
Search
Help
Register
Login
Home
