Zero-copy patch

[Volker Lendecke]

On Tue, Feb 01, 2011 at 09:03:06AM -0500, Jacky Lam wrote:
> I am curious about that as well. But I have double check
> most of the time spending while writing to samba server is
> that two splice call. And the kernel profile is showing
> that __copy_user() is using 25% CPU time during that
> period of time.
> 
> I don't know if it is platform dependent problem.....have
> you try to turn on splice and do a kernel profiling?

No, I haven't. This is purely from code inspection. I
haven't worked on the splice/recvfile implementation for
quite a while.

Volker

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