Jens Axboe <[email protected]> wrote:
>
> diff --git a/include/asm-i386/scatterlist.h b/include/asm-i386/scatterlist.h
> index d7e45a8..794b68c 100644
> --- a/include/asm-i386/scatterlist.h
> +++ b/include/asm-i386/scatterlist.h
> @@ -8,8 +8,11 @@ struct scatterlist {
> unsigned int offset;
> dma_addr_t dma_address;
> unsigned int length;
> + struct scatterlist *next;
> };
BTW, the crypto layer's scatterlist already has a chaining mechanism
using the existing structure. The only difference is that the chained
pointer is stored inside the 'struct page *' rather than a new pointer.
Its existence is flagged by a zero value in the length field.
Now I'm not super-religious about this but we should at least consider
whether forking out 4 bytes in every scatterlist member is worthwhile
investment when we can use 12 bytes at the end instead.
Cheers,
--
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <[email protected]>
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