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=-0.9 required=3.0 tests=DKIM_SIGNED,DKIM_VALID, DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,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 6085AC47247 for ; Mon, 4 May 2020 21:08:34 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 36FEB2073B for ; Mon, 4 May 2020 21:08:34 +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="oxvtDDfT" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727890AbgEDVId (ORCPT ); Mon, 4 May 2020 17:08:33 -0400 Received: from ozlabs.org ([203.11.71.1]:42111 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726334AbgEDVId (ORCPT ); Mon, 4 May 2020 17:08:33 -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 49GFnp29n5z9sRf; Tue, 5 May 2020 07:08:30 +1000 (AEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=canb.auug.org.au; s=201702; t=1588626511; bh=LWc7WDFCEe4/CqRdxD8y0ASLGpoEli6mYUnBjW2ojek=; h=Date:From:To:Cc:Subject:In-Reply-To:References:From; b=oxvtDDfTAmGhZsiDyeSkaPzxqc5R4JAushqgSvEozm+8m60vD5NXplkXq0IKnkiTL ZyebJTrEvSmlc/KmNRPkhjmYCcoqIAcS551O/Re48sR0dSV9ng3LSBZf+rFOcoWUM3 mfGzX3GOAN7xKZaC73P3l6jcgUkVDcbPNLgT39mrOYowtjHZRvV4JPOq6xC0BmFCBN L9Cg1Yt2NTlaIFU3JtBij2eIESyuqVjoCrkVCtdZ2t5GbMB2y2g7pm3Xhk2QQNl89V RXhd6foSKeYTxpn47ev8FRFs4uojxJsymCScx4fHBEg5UL6sN2ycyGZChHjmb0cjOo wS7ywR8zcazBw== Date: Tue, 5 May 2020 07:08:28 +1000 From: Stephen Rothwell To: Mike Rapoport Cc: Christian Borntraeger , Linux Next Mailing List , Linux Kernel Mailing List , Andrew Morton , Marc Hartmayer , linux-s390 , Vasily Gorbik , Heiko Carstens Subject: Re: linux-next: Tree for May 4 --> mm: free_area_init: allow defining max_zone_pfn in descending order does increase memory use Message-ID: <20200505070828.20fd21af@canb.auug.org.au> In-Reply-To: <20200504154410.GF342687@linux.ibm.com> References: <20200504173547.2cdd83bf@canb.auug.org.au> <9e9edd1e-6653-a585-0e22-69930a07dce1@de.ibm.com> <20200504154410.GF342687@linux.ibm.com> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="Sig_/EC8ktDc27Ll0Q6ltM8Z62Nm"; protocol="application/pgp-signature"; micalg=pgp-sha256 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --Sig_/EC8ktDc27Ll0Q6ltM8Z62Nm Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: quoted-printable Hi Mike, On Mon, 4 May 2020 18:44:10 +0300 Mike Rapoport wrote: > > Ho Christian, >=20 > On Mon, May 04, 2020 at 04:50:06PM +0200, Christian Borntraeger wrote: > > Mike, > > commit 51a2f644fd020d5f090044825c388444d11029d ("mm: free_area_init: al= low defining max_zone_pfn in descending order") > > does increase the memory use on s390 (e.g. 700 MB vs.1.8 GB). > >=20 > > Something is odd in this patch. Any idea? =20 >=20 > Yeah, this patch is buggy. In short, it breaks zone size calculation on > s390 and some other architectures. >=20 > I've just replied at [1] with more details and a fix. >=20 > [1] https://lore.kernel.org/linux-mm/20200504153901.GM14260@kernel.org/ I have added that to linux-next for today. --=20 Cheers, Stephen Rothwell --Sig_/EC8ktDc27Ll0Q6ltM8Z62Nm Content-Type: application/pgp-signature Content-Description: OpenPGP digital signature -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEENIC96giZ81tWdLgKAVBC80lX0GwFAl6whEwACgkQAVBC80lX 0GzmWwf+JTR9NVgZ198HKHx7MTJLK6YQL0hAXJV5Dz/0wmzoL2UDKclFwic2HZv9 wK9ztJaqX20Vdxq6zbQMB/xvTiItLdbe8EosmrPdG46BeocBOKX0AInV/zRb9K9P GgJPZemdo3HJqLPqY4Djw/CWTewa6g21M5xg5HMy5EbnTRSitEotZuHt69EHmJKo nuPEFRG/cn8xXel/4963dNTFfTESCFOPs++wooDHFQ0mQzAnsR3nKMcEVZYFb1Br T7wSanues09dSqhsC+lJDe37tyMwcU5N/y2NusDKahBn63aZEz/q/qXNrbBDhYgE RqXCWfPt+gliNxsihqbuk5o9lYk/pQ== =1Mmd -----END PGP SIGNATURE----- --Sig_/EC8ktDc27Ll0Q6ltM8Z62Nm--