Re: [patch] mm: order evictable rescue in LRU putback

[Rik van Riel]

Johannes Weiner wrote:

> This patch adds an explicit full barrier to force ordering between
> SetPageLRU() and PageMlocked() so that either one of the competitors
> rescues the page.
>
> Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx>
> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@xxxxxxxxxxxxxx>
> Cc: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
> Cc: Mel Gorman <mel@xxxxxxxxx>
> Cc: Lee Schermerhorn <Lee.Schermerhorn@xxxxxx>
> Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>

Reviewed-by: Rik van Riel <riel@xxxxxxxxxx>

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