Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754955Ab3IXX6w (ORCPT ); Tue, 24 Sep 2013 19:58:52 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:38301 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754927Ab3IXX6u (ORCPT ); Tue, 24 Sep 2013 19:58:50 -0400 Date: Tue, 24 Sep 2013 16:58:48 -0700 From: Andrew Morton To: Andi Kleen Cc: "Kirill A. Shutemov" , Andrea Arcangeli , Al Viro , Hugh Dickins , Wu Fengguang , Jan Kara , Mel Gorman , linux-mm@kvack.org, Matthew Wilcox , "Kirill A. Shutemov" , Hillf Danton , Dave Hansen , Ning Qu , Alexander Shishkin , linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCHv6 00/22] Transparent huge page cache: phase 1, everything but mmap() Message-Id: <20130924165848.4f3ba25b4de236fa746fb7ee@linux-foundation.org> In-Reply-To: <20130924234950.GC2018@tassilo.jf.intel.com> References: <1379937950-8411-1-git-send-email-kirill.shutemov@linux.intel.com> <20130924163740.4bc7db61e3e520798220dc4c@linux-foundation.org> <20130924234950.GC2018@tassilo.jf.intel.com> X-Mailer: Sylpheed 3.2.0beta5 (GTK+ 2.24.10; x86_64-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 923 Lines: 21 On Tue, 24 Sep 2013 16:49:50 -0700 Andi Kleen wrote: > > At the very least we should get this done for a real filesystem to see > > how intrusive the changes are and to evaluate the performance changes. > > That would give even larger patches, and people already complain > the patchkit is too large. The thing is that merging an implementation for ramfs commits us to doing it for the major real filesystems. Before making that commitment we should at least have a pretty good understanding of what those changes will look like. Plus I don't see how we can realistically performance-test it without having real physical backing store in the picture? -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/