Message-ID: <4FD13C30.2030401@linux.vnet.ibm.com>
Date: Thu, 07 Jun 2012 16:41:36 -0700
From: Dave Hansen <dave@linux.vnet.ibm.com>
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To: Dmitry Adamushko <dmitry.adamushko@gmail.com>
CC: John Stultz <john.stultz@linaro.org>,
        KOSAKI Motohiro <kosaki.motohiro@gmail.com>,
        LKML <linux-kernel@vger.kernel.org>,
        Andrew Morton <akpm@linux-foundation.org>,
        Android Kernel Team <kernel-team@android.com>,
        Robert Love <rlove@google.com>, Mel Gorman <mel@csn.ul.ie>,
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        Dave Chinner <david@fromorbit.com>, Neil Brown <neilb@suse.de>,
        Andrea Righi <andrea@betterlinux.com>,
        "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
        Taras Glek <tgek@mozilla.com>, Mike Hommey <mh@glandium.org>,
        Jan Kara <jack@suse.cz>
Subject: Re: [PATCH 3/3] [RFC] tmpfs: Add FALLOC_FL_MARK_VOLATILE/UNMARK_VOLATILE
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On 06/07/2012 03:55 AM, Dmitry Adamushko wrote:
> but maybe we should also purge them before we swap out some non-tmpfs
> pages or drop some file-backed pages?

Sure...  I guess we could kick that from either direct reclaim or from
kswapd.  But, then we're basically back to the places where
shrink_slab() is called.

I think that means that we think it's preferable to integrate this more
directly in the VM instead of sticking it off in the corner of tmpfs
only, or pretending it's a slab.

Dunno...  The slab shrinker one isn't looking _so_ bad at the moment.

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