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. -- mm/page_alloc.c | 63 +++++++++++++++++++++++++++------------------------------ 1 file changed, 30 insertions(+), 33 deletions(-) -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
