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 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 83D58C43334 for ; Mon, 4 Jul 2022 09:20:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id C546E6B0072; Mon, 4 Jul 2022 05:20:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BDB866B0073; Mon, 4 Jul 2022 05:20:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A7D696B0074; Mon, 4 Jul 2022 05:20:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 9478D6B0072 for ; Mon, 4 Jul 2022 05:20:57 -0400 (EDT) Received: from smtpin31.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 2C9DB3B532 for ; Mon, 4 Jul 2022 09:09:31 +0000 (UTC) X-FDA: 79648844142.31.A5D3E96 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by imf08.hostedemail.com (Postfix) with ESMTP id 796921604FA for ; Mon, 4 Jul 2022 08:40:09 +0000 (UTC) Received: from relay2.suse.de (relay2.suse.de [149.44.160.134]) by smtp-out2.suse.de (Postfix) with ESMTP id 1678C204F5; Mon, 4 Jul 2022 08:40:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=susede1; t=1656924008; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=OAYqgNHe+/uVIKSDCjLSGa9XJUl+x4S9hGoqojL6V6o=; b=CREG25cc4wRHMfTqjWsv4PQ+Qd36hXvb0ony0kCGx1RPa1wq94gEqtzXlFMCs/4F/LN5y7 LPhicNQC+93soJZ1n52a4gDk+YBcVuOb8lbqkqWD6SgkNcaVsYfWTCGl2klODxdnl3Upik CTWJnml0ehq51GSnx+gGpBAY8khEkq0= Received: from suse.cz (unknown [10.100.201.86]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by relay2.suse.de (Postfix) with ESMTPS id 892592C146; Mon, 4 Jul 2022 08:40:07 +0000 (UTC) Date: Mon, 4 Jul 2022 10:40:07 +0200 From: Michal Hocko To: CGEL Cc: David Hildenbrand , linux-mm@kvack.org, linux-kernel@vger.kernel.org, vbabka@suse.cz, minchan@kernel.org, oleksandr@redhat.com, xu xin , Jann Horn , Andrew Morton Subject: Re: [PATCH linux-next] mm/madvise: allow KSM hints for process_madvise Message-ID: References: <93e1e19a-deff-2dad-0b3c-ef411309ec58@redhat.com> <203548a6-cf70-30ce-6756-f6c909e7ef21@redhat.com> <54b67d6b-f600-1b9b-3d3f-e91b13d04c91@redhat.com> <11d28e6d-edb0-7d11-b476-c5808f3b7c5d@redhat.com> <62c296e6.1c69fb81.41c44.1cca@mx.google.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <62c296e6.1c69fb81.41c44.1cca@mx.google.com> ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1656924009; a=rsa-sha256; cv=none; b=G2WnXGB7qu4vWeU42dPpCxO86cLoxBSTLVFKkjJrPkcw4N+Sp80Ms134mApmenkx389sch Wu5TkCPG3d8iFajx+ni28SGo5dMBu7GFXwBRKkQy+D1OnyQrGPWU8Iv2WhSp5NbdPLSb0G hENdupST2ZZ9voDize+DjfxYno0AomE= ARC-Authentication-Results: i=1; imf08.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=CREG25cc; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf08.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.29 as permitted sender) smtp.mailfrom=mhocko@suse.com ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1656924009; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=OAYqgNHe+/uVIKSDCjLSGa9XJUl+x4S9hGoqojL6V6o=; b=e/tHgJWN965iWV661ApzaryNvlBCLfQJOjnRLUofy7Mknlqs75hEQo77xu+mwp7gT1dSOZ e18vLusT3b4iPgEQcE8d6d7DNWU4tCH9/U5nT7dDagNPq7VvwK4A/BSplQZiHVGUKJosvx 9a0/0uE3WaMvkVQ9JD/42BHjrxbhJrs= X-Rspam-User: X-Rspamd-Server: rspam07 Authentication-Results: imf08.hostedemail.com; dkim=pass header.d=suse.com header.s=susede1 header.b=CREG25cc; dmarc=pass (policy=quarantine) header.from=suse.com; spf=pass (imf08.hostedemail.com: domain of mhocko@suse.com designates 195.135.220.29 as permitted sender) smtp.mailfrom=mhocko@suse.com X-Stat-Signature: ketj3pnjr9re5po8ttny4kmkpkmg435u X-Rspamd-Queue-Id: 796921604FA X-HE-Tag: 1656924009-243543 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon 04-07-22 07:29:41, CGEL wrote: [...] > Maybe new semantics is needed similarly to MADV_NOHUGEPAGE that ensures that > there will *not* be huge pages. How do you achieve that with a backward compatibility? -- Michal Hocko SUSE Labs