Re: [PATCH -v7 0/2] Fixing the issue with memory-mapped file times

["Anton Salikhmetov" <salikhmetov@gmail.com>]

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>
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