[PATCH 3/4] proc: Remove the unnecessary global proc_mnt

[Eric W. Biederman]

There are no longer any users of the proc_mnt global
and having it suggests that we have a single instance
of proc, so just kill it.

Signed-off-by: Eric W. Biederman <ebiederm at xmission.com>
---
 fs/proc/inode.c         |    2 --
 fs/proc/root.c          |    5 ++---
 include/linux/proc_fs.h |    1 -
 3 files changed, 2 insertions(+), 6 deletions(-)

diff --git a/fs/proc/inode.c b/fs/proc/inode.c
index 82b3a1b..96446ac 100644
--- a/fs/proc/inode.c
+++ b/fs/proc/inode.c
@@ -71,8 +71,6 @@ static void proc_delete_inode(struct inode *inode)
 	clear_inode(inode);
 }
 
-struct vfsmount *proc_mnt;
-
 static struct kmem_cache * proc_inode_cachep;
 
 static struct inode *proc_alloc_inode(struct super_block *sb)
diff --git a/fs/proc/root.c b/fs/proc/root.c
index f442967..e4b7c5a 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -97,9 +97,8 @@ void __init proc_root_init(void)
 	err = register_filesystem(&proc_fs_type);
 	if (err)
 		return;
-	proc_mnt = kern_mount_data(&proc_fs_type, &init_pid_ns);
-	err = PTR_ERR(proc_mnt);
-	if (IS_ERR(proc_mnt)) {
+	err = pid_ns_prepare_proc(&init_pid_ns);
+	if (err) {
 		unregister_filesystem(&proc_fs_type);
 		return;
 	}
diff --git a/include/linux/proc_fs.h b/include/linux/proc_fs.h
index a5ab8ad..40da820 100644
--- a/include/linux/proc_fs.h
+++ b/include/linux/proc_fs.h
@@ -128,7 +128,6 @@ extern struct proc_dir_entry *create_proc_entry(const char *name, mode_t mode,
 						struct proc_dir_entry *parent);
 extern void remove_proc_entry(const char *name, struct proc_dir_entry *parent);
 
-extern struct vfsmount *proc_mnt;
 struct pid_namespace;
 extern int proc_fill_super(struct super_block *);
 extern struct inode *proc_get_inode(struct super_block *, unsigned int, struct proc_dir_entry *);
-- 
1.5.3.rc6.17.g1911