Sure. But sendfile is not one of the fundamental UNIX operations...
If there was no alternative to this I would probably have not said
anything, but with the rw_kiovec file op just before the door I don't
see any reason to add this _very_ specific file operation.
An alloc_kiovec before and an free_kiovec after the actual call
and the memory overhaed of a kiobuf won't hurt so much that it stands
against a clean interface, IMHO.
> Linus has already seen this. Originally he had a gripe because in an
> older revision of the code used to allow multiple pages to be passed
> in an array to the writepage(s) operation. He didn't like that, so I
> made it take only one page as he requested. He had no other major
> objections to the infrastructure.
You get that multiple page call with kiobufs for free...
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