Re: iwlagn: order 2 page allocation failures

[Mel Gorman]

On Mon, Sep 14, 2009 at 11:42:15AM -0400, Christoph Lameter wrote:
> On Mon, 14 Sep 2009, Zhu Yi wrote:
> 
> > BTW, does SLAB/SLUB guarantee size of multiple PAGE_SIZE __kmalloc()
> > allocation align on PAGE_SIZE (or 256 bytes) boundary?
> 
> Page allocators guarantee page aligned data. Slab allocators do not.
> 
> You can create a slab that aligns objects on 256 byte boundary if you
> want.
> 

The allocation of buffers >= PAGE_SIZE even when allocated with
kmalloc() are page-aligned though right? It's not an explicit guarantee
but is it not always the case?

-- 
Mel Gorman
Part-time Phd Student                          Linux Technology Center
University of Limerick                         IBM Dublin Software Lab
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/