Messages in this thread | | | Date | Wed, 8 Apr 2009 00:00:18 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] [2/16] POISON: Add page flag for poisoned pages |
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On Wed, 8 Apr 2009 08:24:41 +0200 Andi Kleen <andi@firstfloor.org> wrote:
> On Tue, Apr 07, 2009 at 10:14:21PM -0700, Andrew Morton wrote: > > On Tue, 7 Apr 2009 17:09:58 +0200 (CEST) Andi Kleen <andi@firstfloor.org> wrote: > > > > > Poisoned pages need special handling in the VM and shouldn't be touched > > > again. This requires a new page flag. Define it here. > > > > I wish this patchset didn't change/abuse the well-understood meaning of > > the word "poison". > > Sorry, that's the terminology on the hardware side. > > If there's much confusion I could rename it HwPoison or somesuch?
I understand that'd be a PITA but I suspect it would be best, long-term. Having this conflict in core MM is really pretty bad.
> > > The page flags wars seem to be over, so it shouldn't be a problem > > > to get a new one. I hope. > > > > They are? How did it all get addressed? > > Allowing 64bit to use more and using [V]SPARSEMAP to limit flags > use for zones. I think.
Nobody ever seems to be able to work out how many we actually have left.
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