Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934527AbbEMOrS (ORCPT ); Wed, 13 May 2015 10:47:18 -0400 Received: from prod-mail-xrelay02.akamai.com ([72.246.2.14]:49810 "EHLO prod-mail-xrelay02.akamai.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S934074AbbEMOrQ (ORCPT ); Wed, 13 May 2015 10:47:16 -0400 Date: Wed, 13 May 2015 10:47:15 -0400 From: Eric B Munson To: Michal Hocko Cc: Michael Kerrisk , Andrew Morton , Linus Torvalds , David Rientjes , LKML , Linux API , linux-mm@kvack.org, Michal Hocko Subject: Re: [PATCH 2/2] mmap2: clarify MAP_POPULATE Message-ID: <20150513144715.GE1227@akamai.com> References: <1431527892-2996-1-git-send-email-miso@dhcp22.suse.cz> <1431527892-2996-3-git-send-email-miso@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="a+b56+3nqLzpiR9O" Content-Disposition: inline In-Reply-To: <1431527892-2996-3-git-send-email-miso@dhcp22.suse.cz> User-Agent: Mutt/1.5.21 (2010-09-15) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1878 Lines: 48 --a+b56+3nqLzpiR9O Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, 13 May 2015, Michal Hocko wrote: > From: Michal Hocko >=20 > David Rientjes has noticed that MAP_POPULATE wording might promise much > more than the kernel actually provides and intend to provide. The > primary usage of the flag is to pre-fault the range. There is no > guarantee that no major faults will happen later on. The pages might > have been reclaimed by the time the process tries to access them. >=20 > Signed-off-by: Michal Hocko Reviewed-by: Eric B Munson --a+b56+3nqLzpiR9O Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1 iQIcBAEBAgAGBQJVU2PzAAoJELbVsDOpoOa9MfUQAJTJ/HrT0MkSGYeicZsd/fPv Rr/bJn9eQ+kYCXs5UqSpseRznLOt297Yt0aA45cbk2CGXe/s1FMxlr+OqZJaq5b+ kJXcJ0vorN/29AFSyqHUHs+3Dfkmcop6k1PomDItwVx8p9tVi7dSdE8laYufx1fJ smsw/jm+vecBLuriss1RmtnYkGwOdbwB9HDzte30x6DAOKRC6y/gZeBlLTJ+cdUB FyH8kLtOkm8O9x1bR6TbBswo1tVn1LmCQHyNxZH9i41FuZVciTkpu6SrGpfn4j0Z jtQoNXVukruRQjZyIrBdiuxZWV/HFSTS3G0DUORpm/uupLG4VcBf904VH7jEgAkU 3h/ky8TMvXN3IOxy9GENsJ6GKhIjXSJuYQp6iUQfcHLTKNnkOfSJJnpy75wvmJCu kIGHunZXd6ocCA2vBPqiOHx46scOy9E58Vurdtz5SnwVVV6crznvIQ7jzewpVkFs 0EIU0xf0FOb9iGYmvRetb2Ut6rwS4/i/VkGbHbl7nLaGBcJtX1zP/f26X2NrnCAy iauzQ/ullPiji0JufVB+G2v+RBR7fRpnYB/CUF5p+ubzKHpSjjC4jWhjOW8jQc+W coZUJiXBQE6LfeqOSh+MPIVFoyBmEN8HnQ9vQxpvlopfJ1D+jVjOBnFIvzdwre7R jVUo3LatpKU4Z796F6xS =yYNO -----END PGP SIGNATURE----- --a+b56+3nqLzpiR9O-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/