(2014/11/12 17:37), Tang Chen wrote: > When memory is hot-added, all the memory is in offline state. So > clear all zones' present_pages because they will be updated in > online_pages() and offline_pages(). Otherwise, /proc/zoneinfo > will corrupt: > > When the memory of node2 is offline: > # cat /proc/zoneinfo > ...... > Node 2, zone Movable > ...... > spanned 8388608 > present 8388608 > managed 0 > > When we online memory on node2: > # cat /proc/zoneinfo > ...... > Node 2, zone Movable > ...... > spanned 8388608 > present 16777216 > managed 8388608 > > Signed-off-by: Tang Chen <tangchen@xxxxxxxxxxxxxx> > Reviewed-by: Yasuaki Ishimatsu <isimatu.yasuaki@xxxxxxxxxxxxxx> > Cc: stable@xxxxxxxxxxxxxxx # 3.16+ Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>