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SubjectRe: [PATCH v9] mm: support madvise(MADV_FREE)
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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@gmail.com> Cc: Linux API
> <linux-api@vger.kernel.org> Cc: Hugh Dickins <hughd@google.com> Cc:
> Johannes Weiner <hannes@cmpxchg.org> Cc: Rik van Riel
> <riel@redhat.com> Cc: KOSAKI Motohiro
> <kosaki.motohiro@jp.fujitsu.com> Cc: Mel Gorman <mgorman@suse.de>
> Cc: Jason Evans <je@fb.com> Cc: Zhang Yanfei
> <zhangyanfei@cn.fujitsu.com> Signed-off-by: Minchan Kim
> <minchan@kernel.org>

Acked-by: Rik van Riel <riel@redhat.com>


- --
All rights reversed
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