From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9C157C433E1 for ; Mon, 24 Aug 2020 23:01:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3635520702 for ; Mon, 24 Aug 2020 23:01:00 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=canb.auug.org.au header.i=@canb.auug.org.au header.b="bhHutHwc" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728058AbgHXXA7 (ORCPT ); Mon, 24 Aug 2020 19:00:59 -0400 Received: from bilbo.ozlabs.org ([203.11.71.1]:55587 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726519AbgHXXA7 (ORCPT ); Mon, 24 Aug 2020 19:00:59 -0400 Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Bb6zq03mTz9sSP; Tue, 25 Aug 2020 09:00:54 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1598310057; bh=eDDydcN+yRwqvCr58cy3ZtpIXf7l8cnkzFj+j1CqajM=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=bhHutHwcHIAL9ZElVcQQk25ly0t5DlWuVtHmK3kFpuxfYpgSIUxe3i7Dwf+HPRMWN D+F49Hy90V3rnGPOmwlB8FmTw4m5u0OVlESvELOTcUL/qquubwqnXGVzL9LD3aPMwc CGMiBfTl2CvWpU0XobpSYMeT3zf2EcuOYroHY3UZ7xd2COfY9DSIdNoq5Dk+iqdqVz TJbQ6AjtyUJzVlovsBKnXm93TnFjnvnUBsZilA2GoXAIUizRL1PNSLM/3rGX866oa6 RDPFiyMo6NtWzdAszGH8k1rf76B8FW4FMDFQPvXYBSzPX2JpXzy/HkXEJr1+g+Xrdl LmHnzuTFbCojw== Date: Tue, 25 Aug 2020 09:00:54 +1000 From: Stephen Rothwell To: Michal Hocko Cc: Qian Cai , Alex Shi , akpm@linux-foundation.org, Johannes Weiner , Vladimir Davydov , cgroups@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-next@vger.kernel.org Subject: Re: [Resend PATCH 1/6] mm/memcg: warning on !memcg after readahead page charged Message-ID: <20200825090054.3c5dd68a@canb.auug.org.au> In-Reply-To: <20200824151045.GC3415@dhcp22.suse.cz> References: <1597144232-11370-1-git-send-email-alex.shi@linux.alibaba.com> <20200820145850.GA4622@lca.pw> <20200824145201.GB4337@lca.pw> <20200824151045.GC3415@dhcp22.suse.cz> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/GBWE4=3K9zAUW5hSuk=F0/p"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-next-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-next@vger.kernel.org --Sig_/GBWE4=3K9zAUW5hSuk=F0/p Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Michal, On Mon, 24 Aug 2020 17:10:45 +0200 Michal Hocko wrote: > > On Mon 24-08-20 10:52:02, Qian Cai wrote: > > On Thu, Aug 20, 2020 at 10:58:50AM -0400, Qian Cai wrote: =20 > > > On Tue, Aug 11, 2020 at 07:10:27PM +0800, Alex Shi wrote: =20 > > > > Since readahead page is charged on memcg too, in theory we don't ha= ve to > > > > check this exception now. Before safely remove them all, add a warn= ing > > > > for the unexpected !memcg. > > > >=20 > > > > Signed-off-by: Alex Shi > > > > Acked-by: Michal Hocko =20 > > >=20 > > > This will trigger, =20 > >=20 > > Andrew, Stephen, can you drop this series for now? I did manage to trig= ger this > > warning on all arches, powerpc, x86 and arm64 (below). =20 >=20 > Yes, I do agree. See http://lkml.kernel.org/r/20200824151013.GB3415@dhcp2= 2.suse.cz OK, I have removed the following from linux-next for today: c443db77c9f3 ("mm/thp: narrow lru locking") 18bafefba73d ("mm/thp: remove code path which never got into") 5fb6c0683017 ("mm/thp: clean up lru_add_page_tail") 9d1d568727a8 ("mm/thp: move lru_add_page_tail func to huge_memory.c") 47eb331560ff ("mm/memcg: bail out early from swap accounting when memcg i= s disabled") 4b0d99a64d78 ("mm/memcg: warning on !memcg after readahead page charged") --=20 Cheers, Stephen Rothwell --Sig_/GBWE4=3K9zAUW5hSuk=F0/p Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAl9ERqYACgkQAVBC80lX 0GwA5wf+MmH5x5QjwvI+81lnKYiqyUbfsEnlGMvy8JrOIX37/7lb9nUtabZtlOIx RV6oA0amomiZDwc/c2X6GQh3oVsn69NpycxvuwZmofK7TSCz6U+YZFaUsFLxdJmd RfQIvC55ORNcYXyjd67/OgCeXYDf//WyYMy82qd37YvLK3E7vtQQRRvdrskLBMNr MpcRDAW4Lj3JBojpGVBspX2t0L0rmXzQY2OomgWQB29HFnJqNxPQ77aRLhm2zM6E uRoOgMi2ca9F/cxXJKQwDrPceC7xWzaiUgCD8uOxFLwqtzcdiipnOOAeg6SJ1krt 7HQIE8bmAXf6XXAKncXy8nF4+VL0Pg== =v0cS -----END PGP SIGNATURE----- --Sig_/GBWE4=3K9zAUW5hSuk=F0/p--