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Date: Wed, 15 Aug 2007 00:16:16 +0200 From: Andi Kleen <andi@...stfloor.org> To: Christoph Lameter <clameter@....com> Cc: Andi Kleen <andi@...stfloor.org>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [RFC 4/9] Atomic reclaim: Save irq flags in vmscan.c On Tue, Aug 14, 2007 at 03:07:10PM -0700, Christoph Lameter wrote: > There are more spinlocks needed. So we would just check the whole bunch > and fail if any of them are used? Yes zone_flag would apply to all of them. > > > do things with zone locks > > } > > > > The interrupt handler shouldn't touch zone_flag. If it wants > > to it would need to be converted to a local_t and incremented/decremented > > (should be about the same cost at least on architectures with sane > > local_t implementation) > > That would mean we need to fork the code for reclaim? Not with the local_t increment. -Andi - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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