Re: [Linaro-mm-sig] [PATCHv21 10/16] mm: Serialize access to min_free_kbytes

On Fri, 10 Feb 2012 18:32:25 +0100 Marek Szyprowski m.szyprowski@samsung.com wrote:

From: Mel Gorman mgorman@suse.de

There is a race between the min_free_kbytes sysctl, memory hotplug and transparent hugepage support enablement. Memory hotplug uses a zonelists_mutex to avoid a race when building zonelists. Reuse it to serialise watermark updates.

[a.p.zijlstra@chello.nl: Older patch fixed the race with spinlock] Signed-off-by: Mel Gorman mgorman@suse.de Signed-off-by: Marek Szyprowski m.szyprowski@samsung.com

At linux-next, conflicted with "mm: add extra free kbytes tunable"

To the logic, Reviewed-by: KAMEZAWA Hiroyuki kamezawa.hiroyu@jp.fujitsu.com