Messages in this thread | | | Date | Mon, 19 Oct 2009 15:13:59 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH 0/2] Reduce number of GFP_ATOMIC allocation failures |
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On Sat, Oct 17, 2009 at 08:34:21PM +0200, Karol Lewandowski wrote: > On Fri, Oct 16, 2009 at 11:37:24AM +0100, Mel Gorman wrote: > > The following two patches against 2.6.32-rc4 should reduce allocation > > failure reports for GFP_ATOMIC allocations that have being cropping up > > since 2.6.31-rc1. > ... > > The patches should also help the following bugs as well and testing there > > would be appreciated. > > > > [Bug #14265] ifconfig: page allocation failure. order:5, mode:0x8020 w/ e100 > > > > It might also have helped the following bug > > These patches actually made situation kind-of "worse" for this > particular issue. > > I've tried patches with post 2.6.32-rc4 kernel and after second > suspend-resume cycle I got typical "order:5" failure. However, this > time when I manually tried to bring interface up ("ifup eth0") it > failed for 4 consecutive times with "Can't allocate memory". Before > applying these patches this never occured -- kernel sometimes failed > to allocate memory during resume, but it *never* failed afterwards. >
I'm hoping the patch + the revert which I asked for in another mail will help. It's been clear for a while that more than one thing went wrong during this cycle.
> I'll go now for another round of bisecting... and hopefully this time > I'll be able to trigger this problem on different/faster computer with > e100-based card. > > > > although that driver has already been fixed by not making high-order > > atomic allocations. > > Driver has been fixed? The one patch that I saw (by davem[1]) didn't > fix this issue. As of 2.6.32-rc5 I see no fixes to e100.c in > mainline, has there been another than this[1] fix posted somewhere? > > [1] http://lkml.org/lkml/2009/10/12/169 >
The driver that was fixed was for the ipw2200, not the e100.
Thanks
-- Mel Gorman Part-time Phd Student Linux Technology Center University of Limerick IBM Dublin Software Lab
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