Re: Re: [BLOCK] bh: Ensure bh fits within a page

[Pekka Enberg]

Hi,

On 8/1/06, Christoph Lameter <clameter@xxxxxxx> wrote:
> The slab allocator gives no guarantee that a structure is not straddling a
> page boundary regardless of debug or not. It may just happen that the
> objects are arranged if kmem_cache_cretae() is called with certain
> parameters. Another arch with other cacheline alignment and another page
> size may arrange the objects differently.

Indeed. You could try to force zero-order page allocations for a
cache, but we are probably better of using the page allocator directly
or crafting a special purpose allocator for the block layer.

                                Pekka
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