Re: possible bug in find_get_pages

[mark gross <mgross@linux.intel.com>]

On Tue, Mar 10, 2009 at 11:45:52AM +0100, Nick Piggin wrote:
> On Mon, Mar 09, 2009 at 09:43:16AM -0700, mark gross wrote:
> > On Sat, Mar 07, 2009 at 08:47:32AM +0900, Minchan Kim wrote:
> > > Nick already found and solved this problem .
> > > It can help you. 
> > > 
> > > http://patchwork.kernel.org/patch/860/
> > > 
> > 
> > Wow, this reads just like the problem we are seeing.  I'll try the
> > patch and let the test run for a few days!
> > 
> > We've even see it come out of the live lock once in a while as well.  I
> > was thinking cache coherency HW issue until this :)
> > 
> > I'll send an update after running the test.
> 
> Note that after some discussion, the accepted fix looks a bit
> different (and might potentially fix another problem if the compiler
> gets very smart, although gcc doesn't seem to).
> 
> Git commit e8c82c2e23e3527e0c9dc195e432c16784d270fa

Yes, we are testing with this one liner fix, 30rhs and counting.  Its
looking pretty good.

thanks!

--mgross

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