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authorMichal Hocko <mhocko@suse.com>2017-09-07 02:20:20 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-07 03:27:25 +0300
commitd9c9a0b9729c35c96ef7bee4ded56d9441bebd58 (patch)
tree35f4cfc9b87e72b5a571af0be3fd49ec6012763d /init
parentafb6ebb3faeb382f7c8b4478f2a84cee37bb8610 (diff)
downloadlinux-d9c9a0b9729c35c96ef7bee4ded56d9441bebd58.tar.xz
mm, page_alloc: do not set_cpu_numa_mem on empty nodes initialization
__build_all_zonelists reinitializes each online cpu local node for CONFIG_HAVE_MEMORYLESS_NODES. This makes sense because previously memory less nodes could gain some memory during memory hotplug and so the local node should be changed for CPUs close to such a node. It makes less sense to do that unconditionally for a newly creaded NUMA node which is still offline and without any memory. Let's also simplify the cpu loop and use for_each_online_cpu instead of an explicit cpu_online check for all possible cpus. Link: http://lkml.kernel.org/r/20170721143915.14161-4-mhocko@kernel.org Signed-off-by: Michal Hocko <mhocko@suse.com> Acked-by: Mel Gorman <mgorman@suse.de> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Johannes Weiner <hannes@cmpxchg.org> Cc: Joonsoo Kim <js1304@gmail.com> Cc: Shaohua Li <shaohua.li@intel.com> Cc: Toshi Kani <toshi.kani@hpe.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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