Messages in this thread | | | 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 |
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2008/1/22, Jesper Juhl <jesper.juhl@gmail.com>: > On 22/01/2008, Anton Salikhmetov <salikhmetov@gmail.com> 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 <jesper.juhl@gmail.com> > 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 >
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