/proc/self is never going to be invalidated...
Al Viro [Wed, 16 Feb 2011 15:04:50 +0000 (10:04 -0500)]
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

fs/proc/base.c

index 9d096e8..d49c4b5 100644 (file)
@@ -2620,35 +2620,6 @@ static const struct pid_entry proc_base_stuff[] = {
                &proc_self_inode_operations, NULL, {}),
 };
 
-/*
- *     Exceptional case: normally we are not allowed to unhash a busy
- * directory. In this case, however, we can do it - no aliasing problems
- * due to the way we treat inodes.
- */
-static int proc_base_revalidate(struct dentry *dentry, struct nameidata *nd)
-{
-       struct inode *inode;
-       struct task_struct *task;
-
-       if (nd->flags & LOOKUP_RCU)
-               return -ECHILD;
-
-       inode = dentry->d_inode;
-       task = get_proc_task(inode);
-       if (task) {
-               put_task_struct(task);
-               return 1;
-       }
-       d_drop(dentry);
-       return 0;
-}
-
-static const struct dentry_operations proc_base_dentry_operations =
-{
-       .d_revalidate   = proc_base_revalidate,
-       .d_delete       = pid_delete_dentry,
-};
-
 static struct dentry *proc_base_instantiate(struct inode *dir,
        struct dentry *dentry, struct task_struct *task, const void *ptr)
 {
@@ -2685,7 +2656,6 @@ static struct dentry *proc_base_instantiate(struct inode *dir,
        if (p->fop)
                inode->i_fop = p->fop;
        ei->op = p->op;
-       d_set_d_op(dentry, &proc_base_dentry_operations);
        d_add(dentry, inode);
        error = NULL;
 out: