Hi,

Here's an updated implementation of tcp network splice receive support.
It actually works for me now, no data corruption seen.

For the original announcement and how to test it, see:

http://marc.info/?l=linux-netdev&m=118103093400770&w=2

I hang on to the original skb by creating a clone of it and holding
references to that. I really don't need a clone, but tcp_read_sock() is
not being very helpful by calling sk_eat_skb() which blissfully ignores
any reference counts and uncondtionally frees the skb - why is that??
The clone works around that issue.

The current code also gets rid of the data_ready hack, and it should now
handle linear/fragments/fraglist in the skb just fine. Thanks to Olaf
for providing review of that stuff!

Patches are against the #splice branch of the block repo, "official" url
of that is:

git://git.kernel.dk/data/git/linux-2.6-block.git/

and it's based on Linus main tree. Let me know if I should supply netdev
branch patches instead, or even just provide a rolled up patch (or patch
series) for anyone curious to test or play with it.

-- 
Jens Axboe