Re: Linux Zero Copy

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On Thu, 14 Aug 2003 17:52:51 +0100
Jamie Lokier <jamie@shareable.org> wrote:

> Nagendra Singh Tomar wrote:
> >         Thanx for ur reply. So this means that this Zero Copy can only be 
> > used by senders who have to send data from a "file" that supports mmap. I 
> > just can't fill a buffer in userland and expect it to be sent via Zero 
> > Copy. 
> 
> You can fill a buffer in userland and send it with zerocopy.  To do
> this, mmap() a file using PROT_READ|PROT_WRITE and MAP_FILE|MAP_SHARED.
> 
> Then you can write directly to the file's pages in memory, and use
> sendfile() to send that data.

Exactly, get creative people :-)
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