linux-kernel - Re: [PATCH] add some drop_caches documentation and info messsge

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Message-ID: <20121024210600.GA17037@liondog.tnic>
Date:	Wed, 24 Oct 2012 23:06:00 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Dave Hansen <dave@...ux.vnet.ibm.com>,
	Michal Hocko <mhocko@...e.cz>, linux-mm@...ck.org,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	KOSAKI Motohiro <kosaki.motohiro@...fujitsu.com>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] add some drop_caches documentation and info messsge

On Wed, Oct 24, 2012 at 01:48:36PM -0700, Andrew Morton wrote:
> Well who knows. Could be that people's vm *does* suck. Or they have
> some particularly peculiar worklosd or requirement[*]. Or their VM
> *used* to suck, and the drop_caches is not really needed any more but
> it's there in vendor-provided code and they can't practically prevent
> it.

I have drop_caches in my suspend-to-disk script so that the hibernation
image is kept at minimum and suspend times are as small as possible.

Would that be a valid use-case?

-- 
Regards/Gruss,
    Boris.
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