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From: Rusty Russell <rusty@rustcorp.com.au>
To: Andrew Morton <akpm@linux-foundation.org>,
        Johannes Weiner <hannes@cmpxchg.org>
Cc: LKML <linux-kernel@vger.kernel.org>, Nick Piggin <npiggin@suse.de>,
        Stewart Smith <stewart@flamingspork.com>, linux-mm@kvack.org,
        linux-arch@vger.kernel.org
Subject: Re: [patch 1/2] mm: fincore()
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Date: Mon, 18 Feb 2013 16:11:08 +1030
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Andrew Morton <akpm@linux-foundation.org> writes:
> The syscall should handle the common usages very well.  But it
> shouldn't handle uncommon usages very badly!

If the user is actually dealing with the contents of the file, following
the established mincore is preferred, since it's in the noise anyway.

Which comes back to needing a user; I'll see what I can come up with.

Cheers,
Rusty.