Re: [PATCH 2/2 v2, RFC] Driver core: Introduce offline/online callbacks for memory blocks

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

On Sat, May 04, 2013 at 01:21:16PM +0200, Rafael J. Wysocki wrote:
> From: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> 
> Introduce .offline() and .online() callbacks for memory_subsys
> that will allow the generic device_offline() and device_online()
> to be used with device objects representing memory blocks.  That,
> in turn, allows the ACPI subsystem to use device_offline() to put
> removable memory blocks offline, if possible, before removing
> memory modules holding them.
> 
> The 'online' sysfs attribute of memory block devices will attempt to
> put them offline if 0 is written to it and will attempt to apply the
> previously used online type when onlining them (i.e. when 1 is
> written to it).
> 
> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> ---
>  drivers/base/memory.c  |  105 +++++++++++++++++++++++++++++++++++++------------
>  include/linux/memory.h |    1 
>  2 files changed, 81 insertions(+), 25 deletions(-)

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>