Received: by 2002:ac0:bc90:0:0:0:0:0 with SMTP id a16csp896569img; Fri, 22 Mar 2019 10:53:18 -0700 (PDT) X-Google-Smtp-Source: APXvYqyqay5dH/lE1bol3PmeQi135YyT6apwrya0PqIqHfQzBqPrC2hja8oH3JI3KaLq+wN3/+R5 X-Received: by 2002:a65:6149:: with SMTP id o9mr10117580pgv.315.1553277198683; Fri, 22 Mar 2019 10:53:18 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553277198; cv=none; d=google.com; s=arc-20160816; b=Lc2JqNXic9os71TOsP49WsdRK33wxLqSBvRL2cr49bWgphNHFe3qGmv4j6auXWSXBC tWwdymkdHgK4wczirggWq7ZXzhJKoJEOanaf7SImwGlWff3r4c5sfaEKA3OuRsA+O5+5 P9uBVG2+T6Dl8RKrMbrag2PD9D9XA54XEGG7E83zuGTJcfMMZ7B67ixmCbeU1nNJEHke RB43LgkTF3MRdTQDZGTYdeCROCSnUzwqggP2S+aB5xIDFimJt0AuMwOm2Ov8yGQ2ws3P 6Jgaw8GygKvfwD4D0VakLDqLCzjeGZlEJ65zGaO8oxciSzvDULkjjNcsDqO82zjqFsse alGA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:feedback-id:mime-version:user-agent :references:message-id:in-reply-to:subject:cc:to:from:date :dkim-signature; bh=4LmkY378p9IKWuPaxRNrOpznTZtEYeypgpUdKx9r6Vo=; b=Dvg70VimT7NO16xh6awHMzXRBTTFSzZj8fcGj7zWX/7pBHrtsXXs+wdN61kmw7HPbc NOKbDInyPWtIEdLFx9JterfFKcwPMPgpMBaS/D8zHHH31sHk5ipzH6qEtyB93Xpgifyh gb90VwhMM2DRYwttRiGXLat78w+9eH0cRMMALQkeWJRq4S5J/+hY8p1ErSealinZeKET eetFf4sfWWwVvAWif5sdgdtGRMFpSmPZsojGwMTQyQJPEmg9iho2k1kcDde3B7v2dhBt aj9gWKLuDyAvOx2de9MYV/m6LSU//XfrOQKyk31GBigHnDWeiR9FiuDZvAkopu/2J+Mm lgww== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=e1GXrN0y; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id r39si7807810pld.70.2019.03.22.10.53.03; Fri, 22 Mar 2019 10:53:18 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=e1GXrN0y; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728260AbfCVRw1 (ORCPT + 99 others); Fri, 22 Mar 2019 13:52:27 -0400 Received: from a9-46.smtp-out.amazonses.com ([54.240.9.46]:49172 "EHLO a9-46.smtp-out.amazonses.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727801AbfCVRw1 (ORCPT ); Fri, 22 Mar 2019 13:52:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/simple; s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw; d=amazonses.com; t=1553277146; h=Date:From:To:cc:Subject:In-Reply-To:Message-ID:References:MIME-Version:Content-Type:Feedback-ID; bh=4LmkY378p9IKWuPaxRNrOpznTZtEYeypgpUdKx9r6Vo=; b=e1GXrN0yDwa0T8TV5m5Wqs4aJ+t7LB51Oh3a8UvZRW7aYkbfdw131t5ua28iVA5J 9PUjeLS565oBrK4sUjVng25TgdtBqwPK7fvvCaxeyAY7d/YXa7Be2flDAGwkW5BUnQ0 lJzae1gKtLzFhDrcOOVDXC7sYlEwIvEwszRDzY24= Date: Fri, 22 Mar 2019 17:52:25 +0000 From: Christopher Lameter X-X-Sender: cl@nuc-kabylake To: Vlastimil Babka cc: linux-mm@kvack.org, Pekka Enberg , David Rientjes , Joonsoo Kim , Ming Lei , Dave Chinner , Matthew Wilcox , "Darrick J . Wong" , Christoph Hellwig , Michal Hocko , linux-kernel@vger.kernel.org, linux-xfs@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-block@vger.kernel.org Subject: Re: [RFC 0/2] guarantee natural alignment for kmalloc() In-Reply-To: <4d2a55dc-b29f-1309-0a8e-83b057e186e6@suse.cz> Message-ID: <01000169a68852ed-d621a35c-af0c-4759-a8a3-e97e7dfc17a5-000000@email.amazonses.com> References: <20190319211108.15495-1-vbabka@suse.cz> <01000169988d4e34-b4178f68-c390-472b-b62f-a57a4f459a76-000000@email.amazonses.com> <5d7fee9c-1a80-6ac9-ac1d-b1ce05ed27a8@suse.cz> <010001699c5563f8-36c6909f-ed43-4839-82da-b5f9f21594b8-000000@email.amazonses.com> <4d2a55dc-b29f-1309-0a8e-83b057e186e6@suse.cz> User-Agent: Alpine 2.21 (DEB 202 2017-01-01) MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII X-SES-Outgoing: 2019.03.22-54.240.9.46 Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, 21 Mar 2019, Vlastimil Babka wrote: > That however doesn't work well for the xfs/IO case where block sizes are > not known in advance: > > https://lore.kernel.org/linux-fsdevel/20190225040904.5557-1-ming.lei@redhat.com/T/#ec3a292c358d05a6b29cc4a9ce3ae6b2faf31a23f I thought we agreed to use custom slab caches for that?