From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pb0-f52.google.com (mail-pb0-f52.google.com [209.85.160.52]) by kanga.kvack.org (Postfix) with ESMTP id 35C1F6B0031 for ; Tue, 24 Sep 2013 19:58:52 -0400 (EDT) Received: by mail-pb0-f52.google.com with SMTP id wz12so5198951pbc.39 for ; Tue, 24 Sep 2013 16:58:51 -0700 (PDT) Date: Tue, 24 Sep 2013 16:58:48 -0700 From: Andrew Morton 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> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: 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 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, 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