Re: [PATCH v2] vmpressure: implement strict mode

From: Minchan Kim
Date: Thu Jun 27 2013 - 11:44:56 EST


On Wed, Jun 26, 2013 at 11:17:12PM -0400, Luiz Capitulino wrote:
> Currently, an eventfd is notified for the level it's registered for
> _plus_ higher levels.
>
> This is a problem if an application wants to implement different
> actions for different levels. For example, an application might want
> to release 10% of its cache on level low, 50% on medium and 100% on
> critical. To do this, an application has to register a different
> eventfd for each pressure level. However, fd low is always going to
> be notified and and all fds are going to be notified on level critical.
>
> Strict mode solves this problem by strictly notifiying an eventfd
> for the pressure level it registered for. This new mode is optional,
> by default we still notify eventfds on higher levels too.
>
> Signed-off-by: Luiz Capitulino <lcapitulino@xxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>

If you will update this patch without major big change, you can keep
earlier Acked-by and Reviewe-by.

Thanks!

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