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author | Michal Hocko <mhocko@suse.com> | 2017-09-06 16:20:20 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-09-06 17:27:25 -0700 |
commit | d9c9a0b9729c35c96ef7bee4ded56d9441bebd58 (patch) | |
tree | 35f4cfc9b87e72b5a571af0be3fd49ec6012763d /mm/memory_hotplug.c | |
parent | afb6ebb3faeb382f7c8b4478f2a84cee37bb8610 (diff) | |
download | blackbird-op-linux-d9c9a0b9729c35c96ef7bee4ded56d9441bebd58.tar.gz blackbird-op-linux-d9c9a0b9729c35c96ef7bee4ded56d9441bebd58.zip |
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>
Diffstat (limited to 'mm/memory_hotplug.c')
0 files changed, 0 insertions, 0 deletions