Messages in this thread | | | Date | Thu, 20 Sep 2012 14:54:33 -0400 | From | Rik van Riel <> | Subject | Re: [PATCH 3/6] mm: compaction: Acquire the zone->lock as late as possible |
| |
On 09/20/2012 10:04 AM, Mel Gorman wrote: > Compactions free scanner acquires the zone->lock when checking for PageBuddy > pages and isolating them. It does this even if there are no PageBuddy pages > in the range. > > This patch defers acquiring the zone lock for as long as possible. In the > event there are no free pages in the pageblock then the lock will not be > acquired at all which reduces contention on zone->lock. > > Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: Rik van Riel <riel@redhat.com>
| |