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Date: Sat, 8 Dec 2007 10:37:23 -0800 (PST) From: Linus Torvalds <torvalds@...ux-foundation.org> To: Andrew Morton <akpm@...ux-foundation.org> cc: Matt Mackall <mpm@...enic.com>, Ingo Molnar <mingo@...e.hu>, "Rafael J. Wysocki" <rjw@...k.pl>, LKML <linux-kernel@...r.kernel.org>, Christoph Lameter <clameter@....com> Subject: Re: tipc_init(), WARNING: at arch/x86/mm/highmem_32.c:52, [2.6.24-rc4-git5: Reported regressions from 2.6.23] On Sat, 8 Dec 2007, Andrew Morton wrote: > > > So which warning is it that triggers the bogus error? > > It's a kmap_atomic() debugging patch which I wrote ages ago and whcih Ingo > sucked into his tree. I don't _think_ this warning is present in your tree > at all. Ok, that explains it. > Knocking out __GFP_ZERO at the point where the slab allocator(s) call the > page allocator seems like a good approach to me. > > But I don't think we need to do anything for 2.6.24.. Good. Although we should perhaps look at that reported performance problem with SLUB. It looks like SLUB will do a memclear() for the area twice (first for the whole page, then for the thing it allocated) for the slow case. Maybe that exacerbates the problem. Linus -- 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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