On Tue, 9 Jan 2001, Ingo Molnar wrote:
> then you'll love the zerocopy patch :-) Just use sendfile() or specify
> MSG_NOCOPY to sendmsg(), and you'll see effective memory-to-card
> DMA-and-checksumming on cards that support it.
I'm confused.
In user space, how do you know when its safe to reuse the buffer that was
handed to sendmsg() with the MSG_NOCOPY flag? Or does sendmsg() with that
flag block until the buffer isn't needed by the kernel any more? If it
does block, doesn't that defeat the use of non-blocking I/O?
davez
-- Dave Zarzycki http://thor.sbay.org/~dave/- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Mon Jan 15 2001 - 21:00:24 EST