Re: [PATCH] tcp: splice as many packets as possible at once

[Herbert Xu]

On Thu, Jan 15, 2009 at 03:26:08PM -0800, David Miller wrote:
>
> New patch, this has the SKB clone removal as well:

Thanks Dave!

Something else just came to mind though.

> +static inline struct page *linear_to_page(struct page *page, unsigned int len,
> +					  unsigned int offset)
> +{
> +	struct page *p = alloc_pages(GFP_KERNEL, 0);
> +
> +	if (!p)
> +		return NULL;
> +	memcpy(page_address(p) + offset, page_address(page) + offset, len);

This won't work very well if skb->head is longer than a page.

We'll need to divide it up into individual pages.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
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/