From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?utf-8?B?SsO2cm4=?= Engel Subject: Re: Proposal for "proper" durable fsync() and fdatasync() Date: Tue, 26 Feb 2008 18:38:19 +0100 Message-ID: <20080226173819.GC23829@lazybastard.org> References: <20080226072649.GB30238@shareable.org> <20080225234319.f4589ae4.akpm@linux-foundation.org> <20080226075921.GG30238@shareable.org> <200802262016.11297.nickpiggin@yahoo.com.au> <20080226140925.GB20428@lazybastard.org> <20080226152810.GB18118@shareable.org> <20080226170214.GA23829@lazybastard.org> <20080226172913.GB22471@shareable.org> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: =?utf-8?B?SsO2cm4=?= Engel , Nick Piggin , Andrew Morton , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, Chris Wedgwood To: Jamie Lokier Return-path: Received: from lazybastard.de ([212.112.238.170]:50257 "EHLO longford.lazybastard.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756312AbYBZRjL (ORCPT ); Tue, 26 Feb 2008 12:39:11 -0500 Content-Disposition: inline In-Reply-To: <20080226172913.GB22471@shareable.org> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: On Tue, 26 February 2008 17:29:13 +0000, Jamie Lokier wrote: >=20 > You're right. Though, doesn't normal page writeback enqueue the COW > metadata changes? If not, how do they get written in a timely > fashion? It does. But this is not sufficient to guarantee that the pages in question have been safely committed to the device by the time sync_file_range() has returned. J=C3=B6rn --=20 Joern's library part 5: http://www.faqs.org/faqs/compression-faq/part2/section-9.html - To unsubscribe from this list: send the line "unsubscribe linux-fsdevel= " in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html