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SubjectRe: 2.4.0-test10-pre3:Oops in mm/filemap.c:filemap_write_pa
On 23 Oct 00 at 14:34, Linus Torvalds wrote:
> On Mon, 23 Oct 2000, Alexander Viro wrote:
> > On Mon, 23 Oct 2000, Linus Torvalds wrote:
> > >
> > > Nope, that just makes the race window smaller. We should check for i_size
> > > after we've gotten the page table lock and just before actually entering
> > > the page into the page tables. Otherwise we'll still race on SMP (a _very_
> > > hard window to get into, admittedly).
> >
> > Umm... I would probably remove Uptodate upon truncate() and check _that_
> > in the place you've mentioned.
>
> Works for me..
>
> > > ClearPageDirty(page);
> > ClearPageUptodate(page);
> >
> > How about that?
>
> Makes sense.

With ClearPageDirty() kernel locked up (but no watchdog, so probably
some livelock) during bootup after fsck /. Unfortunately, 'PC' column
shows complete garbage - init,kswapd,kupdate and rcS in 'R', with
'PC'=current for rcS, 0xc1459f28 for init, 0xc146ffa8 for kswapd and
0xc1469fc8 for kupdate (needless to say that my kernel does not have
20MB... whee what's with PC? it now prints esp instead of eip?). Should
I try ClearPageUptodate() instead?

Petr Vandrovec
vandrove@vc.cvut.cz

P.S.: I have to go home. Continuing after 10 hours.

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