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memory-hotplug: build zonelists when offlining pages
online_pages() does build_all_zonelists() and zone_pcp_update(), I think offline_pages() should do it too. When the zone has no memory to allocate, remove it from other nodes' zonelists. zone_batchsize() depends on zone's present pages, if zone's present pages are changed, zone's pcp should be updated. Signed-off-by: Xishi Qiu <qiuxishi@huawei.com> Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -970,8 +970,13 @@ static int __ref offline_pages(unsigned long start_pfn,
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init_per_zone_wmark_min();
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if (!populated_zone(zone))
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if (!populated_zone(zone)) {
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zone_pcp_reset(zone);
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mutex_lock(&zonelists_mutex);
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build_all_zonelists(NULL, NULL);
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mutex_unlock(&zonelists_mutex);
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} else
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zone_pcp_update(zone);
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if (!node_present_pages(node)) {
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node_clear_state(node, N_HIGH_MEMORY);
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