On Wed, 2007-05-23 at 10:41 +0800, Aubrey Li wrote:
> On 5/23/07, Christoph Lameter <[email protected]> wrote:
> > On Mon, 21 May 2007, Bernhard Walle wrote:
> >
> > > [PATCH] [scsi] Remove __GFP_DMA
> > >
> > > After 821de3a27bf33f11ec878562577c586cd5f83c64, it's not necessary to alloate a
> > > DMA buffer any more in sd.c.
> > >
> > > Signed-off-by: Bernhard Walle <[email protected]>
> >
> > Great that avoids a DMA kmalloc slab. Any other GFP_DMAs left in the scsi
> > layer?
> >
> > Acked-by: Christoph Lameter <[email protected]>
>
> Yes, here is another patch
I'll defer to Mark on this one. However, please remember that you can't
just blindly remove GFP_DMA ... there are some cards which require it.
Aacraid is one example ... it has a set of cards that can only DMA to 31
bits. For them, the GFP_DMA is necessary: The allocation in question
is a scatterlist, which must be within the device DMA mask.
James
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