tree cc91df4f94e06196faa9bde4c6d5cb50fd94bc07
parent 89c86a64cd056e283323710c9ddf6f7090a450c8
author Bjorn Helgaas <bhelgaas@google.com> 1386290280 -0700
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1386480011 -0800

kobject: remove kset from sysfs immediately in kset_unregister()

There's no "unlink from sysfs" interface for ksets, so I think callers of
kset_unregister() expect the kset to be removed from sysfs immediately,
without waiting for the last reference to be released.

This patch makes the sysfs removal happen immediately, so the caller may
create a new kset with the same name as soon as kset_unregister() returns.
Without this, every caller has to call "kobject_del(&kset->kobj)" first
unless it knows it will never create a new kset with the same name.

This sometimes shows up on module unload and reload, where the reload fails
because it tries to create a kobject with the same name as one from the
original load that still exists.  CONFIG_DEBUG_KOBJECT_RELEASE=y makes this
problem easier to hit.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>