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Date:   Mon, 11 May 2020 14:11:22 -0700
From:   Andrew Morton <>
To:     Shakeel Butt <>
Cc:     Mel Gorman <>, Johannes Weiner <>,
        Roman Gushchin <>, Michal Hocko <>,
        Minchan Kim <>,
        Rik van Riel <>,,
Subject: Re: [PATCH] mm: fix LRU balancing effect of new transparent huge

On Sat,  9 May 2020 07:19:46 -0700 Shakeel Butt <> 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.

Confused.  What kernel is this applicable to?

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