Messages in this thread | | | Date | Sun, 07 Apr 2013 11:23:06 -0400 | From | KOSAKI Motohiro <> | Subject | Re: [PATCH 0/3] mm: fixup changers of per cpu pageset's ->high and ->batch |
| |
(4/5/13 4:33 PM), Cody P Schafer wrote: > In one case while modifying the ->high and ->batch fields of per cpu pagesets > we're unneededly using stop_machine() (patches 1 & 2), and in another we don't have any > syncronization at all (patch 3). > > This patchset fixes both of them. > > Note that it results in a change to the behavior of zone_pcp_update(), which is > used by memory_hotplug. I _think_ that I've diserned (and preserved) the > essential behavior (changing ->high and ->batch), and only eliminated unneeded > actions (draining the per cpu pages), but this may not be the case.
at least, memory hotplug need to drain.
| |