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[54.240.9.32]) by mx.google.com with ESMTPS id e3si546308qtp.104.2019.03.22.10.52.26 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 22 Mar 2019 10:52:26 -0700 (PDT) Received-SPF: pass (google.com: domain of 01000169a68852ed-d621a35c-af0c-4759-a8a3-e97e7dfc17a5-000000@amazonses.com designates 54.240.9.32 as permitted sender) client-ip=54.240.9.32; Authentication-Results: mx.google.com; dkim=pass header.i=@amazonses.com header.s=6gbrjpgwjskckoa6a5zn6fwqkn67xbtw header.b=e1GXrN0y; spf=pass (google.com: domain of 01000169a68852ed-d621a35c-af0c-4759-a8a3-e97e7dfc17a5-000000@amazonses.com designates 54.240.9.32 as permitted sender) smtp.mailfrom=01000169a68852ed-d621a35c-af0c-4759-a8a3-e97e7dfc17a5-000000@amazonses.com 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: 2019.03.22-54.240.9.32 Feedback-ID: 1.us-east-1.fQZZZ0Xtj2+TD7V5apTT/NrT6QKuPgzCT/IC7XYgDKI=:AmazonSES 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 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?