Re: 2.6.19 file content corruption on ext3


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@xxxxxxxx> 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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Relevant Pages

  • Re: 2.6.19 file content corruption on ext3
    ... I tried recent git with Peter Zijlstra patch ... who has observed this problem running SMP and/or premptible kernels? ... why isn't that proposed patch's cleaning of the pte racy against ...
    (Linux-Kernel)
  • Re: 2.6.19 file content corruption on ext3
    ... I had filesystem data corruption with rtorrent with 2.6.19. ... I tried recent git with Peter Zijlstra patch ...
    (Linux-Kernel)