tree 2a2e9bb69d2393bf620a34daea17e52ed9f9e5d7
parent 6d748924b753d63a57dad130fdf11f64c27ff54b
author Joel Becker <joel.becker@oracle.com> 1160181203 -0700
committer Mark Fasheh <mark.fasheh@oracle.com> 1184112661 -0700

configfs: accessing item hierarchy during rmdir(2)

Add a notification callback, ops->disconnect_notify(). It has the same
prototype as ->drop_item(), but it will be called just before the item
linkage is broken. This way, configfs users who want to do work while
the object is still in the heirarchy have a chance.

Client drivers will still need to config_item_put() in their
->drop_item(), if they implement it.  They need do nothing in
->disconnect_notify().  They don't have to provide it if they don't
care.  But someone who wants to be notified before ci_parent is set to
NULL can now be notified.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>