From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wj0-f197.google.com (mail-wj0-f197.google.com [209.85.210.197]) by kanga.kvack.org (Postfix) with ESMTP id 348476B0069 for ; Fri, 13 Jan 2017 18:42:51 -0500 (EST) Received: by mail-wj0-f197.google.com with SMTP id h7so2910128wjy.6 for ; Fri, 13 Jan 2017 15:42:51 -0800 (PST) Received: from mail-wm0-x242.google.com (mail-wm0-x242.google.com. [2a00:1450:400c:c09::242]) by mx.google.com with ESMTPS id q66si2367968wma.126.2017.01.13.15.42.49 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Fri, 13 Jan 2017 15:42:49 -0800 (PST) Received: by mail-wm0-x242.google.com with SMTP id c85so15068132wmi.1 for ; Fri, 13 Jan 2017 15:42:49 -0800 (PST) Date: Sat, 14 Jan 2017 02:42:47 +0300 From: "Kirill A. Shutemov" Subject: [LSF/MM ATTEND] THP for ext4, page table manipulation primitives Message-ID: <20170113234247.GD24312@node> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: owner-linux-mm@kvack.org List-ID: To: lsf-pc@lists.linux-foundation.org Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Hello, I would like to attend the summit this year. === One topic I would like to discuss would be huge pages for ext4 and filesystems with backing storage in general. There's patchset that I have hard time upstreaming. I hope having talk about this in person would help moving it forward. === The other topic: the work on 5-level paging made more obvious that we need better way to deal with page tables. Having different data-types per page table level plus set of helpers to deal with each of them doesn't scale. It worked okay of 2- and 3- level page tables. For 5-, it's getting rather ugly. And having different types/helpers to deal with different page table levels makes it harder to integrate huge pages into generic code path: having separate code path for each page size is not very future proof approach. -- Kirill A. Shutemov -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org