procfs: Don't cache a pid in the root inode.

Now that we have s_fs_info pointing to our pid namespace
the original reason for the proc root inode having a struct
pid is gone.

Caching a pid in the root inode has led to some complicated
code.  Now that we don't need the struct pid, just remove it.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>

1 files changed, 0 insertions, 8 deletions

diff --git a/fs/proc/root.c b/fs/proc/root.c
index 5da984959edc..13ef6247e7a3 100644
--- a/fs/proc/root.c
+++ b/fs/proc/root.c
@@ -100,7 +100,6 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
         int err;
         struct super_block *sb;
         struct pid_namespace *ns;
-        struct proc_inode *ei;
         char *options;
 
         if (flags & MS_KERNMOUNT) {
@@ -130,13 +129,6 @@ static struct dentry *proc_mount(struct file_system_type *fs_type,
                 sb->s_flags |= MS_ACTIVE;
         }
 
-        ei = PROC_I(sb->s_root->d_inode);
-        if (!ei->pid) {
-                rcu_read_lock();
-                ei->pid = get_pid(find_pid_ns(1, ns));
-                rcu_read_unlock();
-        }
-
         return dget(sb->s_root);
 }