On Wed, Sep 19, 2012 at 3:29 AM, Minchan Kim <minchan@xxxxxxxxxx> wrote: > During memory-hotplug stress test, I found NR_ISOLATED_[ANON|FILE] > are increasing so that kernel are hang out. > > The cause is that when we do memory-hotadd after memory-remove, > __zone_pcp_update clear out zone's ZONE_STAT_ITEMS in setup_pageset > without draining vm_stat_diff of all CPU. > > This patch fixes it. zone_pcp_update() is called from online pages path. but IMHO, the statistics should be drained offline path. isn't it? thanks. -- 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>