Re: [PATCH v20 11/20] mm/lru: move lock into lru_note_cost

[Johannes Weiner]

On Thu, Oct 29, 2020 at 06:44:56PM +0800, Alex Shi wrote:
> We have to move lru_lock into lru_note_cost, since it cycle up on memcg
> tree, for future per lruvec lru_lock replace. It's a bit ugly and may
> cost a bit more locking, but benefit from multiple memcg locking could
> cover the lost.
> 
> Signed-off-by: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
> Acked-by: Hugh Dickins <hughd@xxxxxxxxxx>
> Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: linux-mm@xxxxxxxxx
> Cc: linux-kernel@xxxxxxxxxxxxxxx

Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>