Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755128AbYAWWoE (ORCPT ); Wed, 23 Jan 2008 17:44:04 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752358AbYAWWnx (ORCPT ); Wed, 23 Jan 2008 17:43:53 -0500 Received: from smtp2.linux-foundation.org ([207.189.120.14]:42070 "EHLO smtp2.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752272AbYAWWnw (ORCPT ); Wed, 23 Jan 2008 17:43:52 -0500 Date: Wed, 23 Jan 2008 14:41:53 -0800 (PST) From: Linus Torvalds To: Hugh Dickins cc: Miklos Szeredi , a.p.zijlstra@chello.nl, salikhmetov@gmail.com, linux-mm@kvack.org, jakob@unthought.net, linux-kernel@vger.kernel.org, valdis.kletnieks@vt.edu, riel@redhat.com, ksm@42.dk, staubach@redhat.com, jesper.juhl@gmail.com, akpm@linux-foundation.org, protasnb@gmail.com, r.e.wolff@bitwizard.nl, hidave.darkstar@gmail.com, hch@infradead.org Subject: Re: [PATCH -v8 3/4] Enable the MS_ASYNC functionality in sys_msync() In-Reply-To: Message-ID: References: <12010440803930-git-send-email-salikhmetov@gmail.com> <1201044083504-git-send-email-salikhmetov@gmail.com> <1201110066.6341.65.camel@lappy> User-Agent: Alpine 1.00 (LFD 882 2007-12-20) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 888 Lines: 26 On Wed, 23 Jan 2008, Hugh Dickins wrote: > > Something I dislike about it, though, is that it leaves the RAM-backed > filesystems (ramfs, tmpfs, whatever) behaving visibly differently from > the others. I hear you. But I'm not seeing many alternatives, unless we start taking write faults on them unnecessarily. Do we care? Probably not really. So we certainly *could* make ramfs/tmpfs claim they do dirty accounting, but just having a no-op writeback. Without that, they'd need something really special in the file time updates. Personally, I don't really see anybody really caring one way or the other, but who knows.. Linus -- 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/