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@cmpxchg.org>

Acked-by: Minchan Kim <minchan@kernel.org>

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