netns: assign PDE->data before gluing entry into /proc tree

In this unfortunate case, proc_mkdir_mode wrapper can't be used anymore and
this is no way to reuse proc_create_data due to nlinks assignment. So,
copy the code from proc_mkdir and assign PDE->data at the appropriate
moment.

Signed-off-by: Denis V. Lunev <den@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 9d53b39..43e54e8 100644 (file)
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -641,6 +641,23 @@ struct proc_dir_entry *proc_mkdir_mode(const char *name, mode_t mode,
        return ent;
 }
 
+struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
+               struct proc_dir_entry *parent)
+{
+       struct proc_dir_entry *ent;
+
+       ent = __proc_create(&parent, name, S_IFDIR | S_IRUGO | S_IXUGO, 2);
+       if (ent) {
+               ent->data = net;
+               if (proc_register(parent, ent) < 0) {
+                       kfree(ent);
+                       ent = NULL;
+               }
+       }
+       return ent;
+}
+EXPORT_SYMBOL_GPL(proc_net_mkdir);
+
 struct proc_dir_entry *proc_mkdir(const char *name,
                struct proc_dir_entry *parent)
 {

diff --git a/fs/proc/proc_net.c b/fs/proc/proc_net.c
index 13cd783..83f357b 100644 (file)
--- a/fs/proc/proc_net.c
+++ b/fs/proc/proc_net.c
@@ -159,17 +159,6 @@ struct net *get_proc_net(const struct inode *inode)
 }
 EXPORT_SYMBOL_GPL(get_proc_net);
 
-struct proc_dir_entry *proc_net_mkdir(struct net *net, const char *name,
-               struct proc_dir_entry *parent)
-{
-       struct proc_dir_entry *pde;
-       pde = proc_mkdir_mode(name, S_IRUGO | S_IXUGO, parent);
-       if (pde != NULL)
-               pde->data = net;
-       return pde;
-}
-EXPORT_SYMBOL_GPL(proc_net_mkdir);
-
 static __net_init int proc_net_ns_init(struct net *net)
 {
        struct proc_dir_entry *netd, *net_statd;