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Message-ID: <1274269236.6930.9930.camel@macbook.infradead.org> Date: Wed, 19 May 2010 12:40:36 +0100 From: David Woodhouse <dwmw2@...radead.org> To: Geert Uytterhoeven <geert@...ux-m68k.org> Cc: Herbert Xu <herbert@...dor.hengli.com.au>, David Miller <davem@...emloft.net>, penberg@...helsinki.fi, mpm@...enic.com, ken@...elabs.ch, michael-dev@...i-braun.de, linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org, anemo@....ocn.ne.jp Subject: Re: [BUG] SLOB breaks Crypto On Wed, 2010-05-19 at 13:32 +0200, Geert Uytterhoeven wrote: > Instead of having (different) defaults in sl[aou]b, perhaps we should > just remove the defaults completely, to ensure all architectures set > ARCH_SLAB_MINALIGN to the correct value? What is 'correct'? The architecture sets it to the minimum value that it can cope with, according to its own alignment constraints (and DMA/cache constraints, in the case of ARCH_KMALLOC_MINALIGN). Some architectures don't _have_ any minimum required alignment, so they have no need to set it. If the architecture _does_ specify a minimum, the allocators must honour it. Otherwise, they're free to do their own thing. And slob chooses to use a smaller alignment than slab and slub do, in accordance with its design and its raison d'être. -- dwmw2 -- 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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