Re: O_DIRECT performance impact on 2.4.18 (was: Re: [PATCH] 2.5.14 IDE 56)

Larry McVoy
2002-05-11T18:37:13Z

On Sat, May 11, 2002 at 11:35:21AM -0700, Linus Torvalds wrote:
> See my details on doing the perfect zero-copy copy thing.
>
> The mmap doesn't actually touch the page tables - it ends up being nothing
> but a "placeholder".

Huh, I must have missed something, does the mmap() not create any page
tables at all?
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Larry McVoy lm at bitmover.com http://www.bitmover.com/lm