Re: [PATCH 04/10] mm: fix LRU balancing effect of new transparent huge pages

From: Minchan Kim
Date: Wed Jun 08 2016 - 03:27:24 EST


On Mon, Jun 06, 2016 at 03:48:30PM -0400, Johannes Weiner wrote:
> Currently, THP are counted as single pages until they are split right
> before being swapped out. However, at that point the VM is already in
> the middle of reclaim, and adjusting the LRU balance then is useless.
>
> Always account THP by the number of basepages, and remove the fixup
> from the splitting path.
>
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>