From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by wa-out-1112.google.com with SMTP id m33so3950537wag.8 for ; Mon, 21 Jan 2008 17:40:52 -0800 (PST) Message-ID: <4df4ef0c0801211740i168a82e6ha8992710da81f0b1@mail.gmail.com> Date: Tue, 22 Jan 2008 04:40:52 +0300 From: "Anton Salikhmetov" Subject: Re: [PATCH -v7 0/2] Fixing the issue with memory-mapped file times In-Reply-To: <9a8748490801211734w7fbb0ed9i66d63153c870a3f0@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <12009619562023-git-send-email-salikhmetov@gmail.com> <9a8748490801211734w7fbb0ed9i66d63153c870a3f0@mail.gmail.com> Sender: owner-linux-mm@kvack.org Return-Path: To: Jesper Juhl Cc: 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, torvalds@linux-foundation.org, a.p.zijlstra@chello.nl, akpm@linux-foundation.org, protasnb@gmail.com, miklos@szeredi.hu, r.e.wolff@bitwizard.nl, hidave.darkstar@gmail.com, hch@infradead.org List-ID: 2008/1/22, Jesper Juhl : > On 22/01/2008, Anton Salikhmetov wrote: > > This is the seventh version of my solution for the bug #2645: > > > > http://bugzilla.kernel.org/show_bug.cgi?id=2645 > > > > Since the previous version, the following has changed: based on > > Linus' comment, SMP-safe PTE update implemented. > > > > Discussions, which followed my past submissions, showed that it was > > tempting to approach this problem using very different assumptions. > > However, many such designs have proved to be incomplete or inefficient. > > > > Taking into account the obvious complexity of this problem, I prepared a > > design document, the purpose of which is twofold. First, it summarizes > > previous attempts to resolve the ctime/mtime issue. Second, it attempts > > to prove that what the patches do is necessary and sufficient for mtime > > and ctime update provided that we start from a certain sane set of > > requirements. The design document is available via the following link: > > > > http://bugzilla.kernel.org/show_bug.cgi?id=2645#c40 > > > > For the seventh version, comprehensive performance testing was performed. > > The results of performance tests, including numbers, are available here: > > > > http://bugzilla.kernel.org/show_bug.cgi?id=2645#c43 > > > > Hi Anton, > > I applied your patches here and as far as my own test programs go, > these patches solve the previously observed problems I saw with mtime > not getting updated. > > Thank you very much for so persistently working on these long standing issues. Thank you very much for testing these patches! > > -- > Jesper Juhl > Don't top-post http://www.catb.org/~esr/jargon/html/T/top-post.html > Plain text mails only, please http://www.expita.com/nomime.html > -- 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