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From: KOSAKI Motohiro <kosaki.motohiro@gmail.com>
Date: Sun, 25 Dec 2011 19:05:08 -0500
Message-ID: <CAHGf_=r5mmUJUaQLKgrY1rf9Qx0gO0hEJaHFehm5Zz7ZKMYUkQ@mail.gmail.com>
Subject: Re: [PATCH 2/3] mincore: Introduce the MINCORE_ANON bit
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To: Pavel Emelyanov <xemul@parallels.com>
Cc: Linux MM <linux-mm@kvack.org>, Hugh Dickins <hughd@google.com>, Andrea Arcangeli <aarcange@redhat.com>, Johannes Weiner <hannes@cmpxchg.org>

> +static unsigned char mincore_pte(struct vm_area_struct *vma, unsigned lo=
ng addr, pte_t pte)
> +{
> + =A0 =A0 =A0 struct page *pg;
> +
> + =A0 =A0 =A0 pg =3D vm_normal_page(vma, addr, pte);
> + =A0 =A0 =A0 if (!pg)
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return 0;
> + =A0 =A0 =A0 else
> + =A0 =A0 =A0 =A0 =A0 =A0 =A0 return PageAnon(pg) ? MINCORE_ANON : 0;
> +}
> +

How do your program handle tmpfs pages (and/or ram device pages)?

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