Re: [PATCH v9] mm: support madvise(MADV_FREE)

[Rik van Riel]

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On 06/30/2014 08:36 PM, Minchan Kim wrote:
> Linux doesn't have an ability to free pages lazy while other OS 
> already have been supported that named by madvise(MADV_FREE).
> 
> The gain is clear that kernel can discard freed pages rather than 
> swapping out or OOM if memory pressure happens.
> 
> Without memory pressure, freed pages would be reused by userspace 
> without another additional overhead(ex, page fault + allocation +
> zeroing).

> Cc: Michael Kerrisk <mtk.manpages@xxxxxxxxx> Cc: Linux API
> <linux-api@xxxxxxxxxxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Cc:
> Johannes Weiner <hannes@xxxxxxxxxxx> Cc: Rik van Riel
> <riel@xxxxxxxxxx> Cc: KOSAKI Motohiro
> <kosaki.motohiro@xxxxxxxxxxxxxx> Cc: Mel Gorman <mgorman@xxxxxxx> 
> Cc: Jason Evans <je@xxxxxx> Cc: Zhang Yanfei
> <zhangyanfei@xxxxxxxxxxxxxx> Signed-off-by: Minchan Kim
> <minchan@xxxxxxxxxx>

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


- -- 
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