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    SubjectRe: 2.6.19 file content corruption on ext3
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    ierdnac ~ # uname -a
    Linux ierdnac 2.6.20-rc1 #1 SMP PREEMPT Sun Dec 17 01:52:28 EET 2006
    i686 Genuine Intel(R) CPU T2050 @ 1.60GHz GenuineIntel
    GNU/Linux


    On Sun, 2006-12-17 at 04:06 -0800, Andrew Morton wrote:
    > On Sun, 17 Dec 2006 02:13:18 +0200
    > Andrei Popa <andrei.popa@i-neo.ro> wrote:
    >
    > > Hello,
    > > I had filesystem data corruption with rtorrent with 2.6.19.
    > > I tried recent git with Peter Zijlstra patch
    > > http://lkml.org/lkml/2006/12/16/144 and it seems that the problem is
    > > fixed.
    > >
    >
    > oh crap, I'd forgotten that test_clear_page_dirty() now fiddles with the
    > ptes.
    >
    > I'd be really surprised if this was all due to a race though. Is everyone
    > who has observed this problem running SMP and/or premptible kernels?
    >
    > Peter, why isn't that proposed patch's cleaning of the pte racy against
    > do_wp_page()?

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