mm, memory_hotplug: add nid parameter to arch_remove_memory
authorOscar Salvador <osalvador@suse.com>
Fri, 28 Dec 2018 08:36:22 +0000 (00:36 -0800)
committerLinus Torvalds <torvalds@linux-foundation.org>
Fri, 28 Dec 2018 20:11:49 +0000 (12:11 -0800)
commit2c2a5af6fed20cf74401c9d64319c76c5ff81309
tree54c8a6655f28b4e9234b2a720ee316634182b9cf
parent23b68cfaae0ea40a9509fad37b756a6916dec54e
mm, memory_hotplug: add nid parameter to arch_remove_memory

Patch series "Do not touch pages in hot-remove path", v2.

This patchset aims for two things:

 1) A better definition about offline and hot-remove stage
 2) Solving bugs where we can access non-initialized pages
    during hot-remove operations [2] [3].

This is achieved by moving all page/zone handling to the offline
stage, so we do not need to access pages when hot-removing memory.

[1] https://patchwork.kernel.org/cover/10691415/
[2] https://patchwork.kernel.org/patch/10547445/
[3] https://www.spinics.net/lists/linux-mm/msg161316.html

This patch (of 5):

This is a preparation for the following-up patches.  The idea of passing
the nid is that it will allow us to get rid of the zone parameter
afterwards.

Link: http://lkml.kernel.org/r/20181127162005.15833-2-osalvador@suse.de
Signed-off-by: Oscar Salvador <osalvador@suse.de>
Reviewed-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Pavel Tatashin <pasha.tatashin@soleen.com>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Jerome Glisse <jglisse@redhat.com>
Cc: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
arch/ia64/mm/init.c
arch/powerpc/mm/mem.c
arch/s390/mm/init.c
arch/sh/mm/init.c
arch/x86/mm/init_32.c
arch/x86/mm/init_64.c
include/linux/memory_hotplug.h
kernel/memremap.c
mm/memory_hotplug.c