Michal Hocko e5e6893026 mm, memory_hotplug: display allowed zones in the preferred ordering ... Prior to commit f1dd2cd13c ("mm, memory_hotplug: do not associate hotadded memory to zones until online") we used to allow to change the valid zone types of a memory block if it is adjacent to a different zone type. This fact was reflected in memoryNN/valid_zones by the ordering of printed zones. The first one was default (echo online > memoryNN/state) and the other one could be onlined explicitly by online_{movable,kernel}. This behavior was removed by the said patch and as such the ordering was not all that important. In most cases a kernel zone would be default anyway. The only exception is movable_node handled by "mm, memory_hotplug: support movable_node for hotpluggable nodes". Let's reintroduce this behavior again because later patch will remove the zone overlap restriction and so user will be allowed to online kernel resp. movable block regardless of its placement. Original behavior will then become significant again because it would be non-trivial for users to see what is the default zone to online into. Implementation is really simple. Pull out zone selection out of move_pfn_range into zone_for_pfn_range helper and use it in show_valid_zones to display the zone for default onlining and then both kernel and movable if they are allowed. Default online zone is not duplicated. Link: http://lkml.kernel.org/r/20170714121233.16861-2-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Mel Gorman <mgorman@suse.de> Cc: Andrea Arcangeli <aarcange@redhat.com> Cc: Reza Arbab <arbab@linux.vnet.ibm.com> Cc: Yasuaki Ishimatsu <yasu.isimatu@gmail.com> Cc: Xishi Qiu <qiuxishi@huawei.com> Cc: Kani Toshimitsu <toshi.kani@hpe.com> Cc: <slaoub@gmail.com> Cc: Daniel Kiper <daniel.kiper@oracle.com> Cc: Igor Mammedov <imammedo@redhat.com> Cc: Vitaly Kuznetsov <vkuznets@redhat.com> Cc: Wei Yang <richard.weiyang@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>		2017-09-06 17:27:25 -07:00
..
acpi	Device properties framework updates for v4.14-rc1	2017-09-05 12:50:00 -07:00
asm-generic	Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2017-09-04 12:21:28 -07:00
clocksource
crypto
drm	drm/syncobj: Add a callback mechanism for replace_fence (v3)	2017-08-29 06:26:42 +10:00
dt-bindings
keys
kvm
linux	mm, memory_hotplug: display allowed zones in the preferred ordering	2017-09-06 17:27:25 -07:00
math-emu
media
memory
misc
net	ipv6: fix sparse warning on rt6i_node	2017-08-28 15:34:40 -07:00
pcmcia
ras
rdma	IB/core: Assign root to all drivers	2017-08-31 08:35:14 -04:00
rxrpc
scsi	SCSI fixes on 20170823	2017-08-23 11:34:40 -07:00
soc
sound	drm: omapdrm: hdmi: Pass HDMI core version as integer to HDMI audio	2017-08-16 12:52:41 +03:00
target
trace	dax: use common 4k zero page for dax mmap reads	2017-09-06 17:27:24 -07:00
uapi	Char/Misc drivers for 4.14-rc1	2017-09-05 11:08:17 -07:00
video
xen