Commit 1e8537ba authored by Xishi Qiu's avatar Xishi Qiu Committed by Linus Torvalds

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: default avatarXishi Qiu <qiuxishi@huawei.com>
Cc: Yasuaki Ishimatsu <isimatu.yasuaki@jp.fujitsu.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 38a76013
...@@ -970,8 +970,13 @@ static int __ref offline_pages(unsigned long start_pfn, ...@@ -970,8 +970,13 @@ static int __ref offline_pages(unsigned long start_pfn,
init_per_zone_wmark_min(); init_per_zone_wmark_min();
if (!populated_zone(zone)) if (!populated_zone(zone)) {
zone_pcp_reset(zone); zone_pcp_reset(zone);
mutex_lock(&zonelists_mutex);
build_all_zonelists(NULL, NULL);
mutex_unlock(&zonelists_mutex);
} else
zone_pcp_update(zone);
if (!node_present_pages(node)) { if (!node_present_pages(node)) {
node_clear_state(node, N_HIGH_MEMORY); node_clear_state(node, N_HIGH_MEMORY);
......
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