Messages in this thread | | | Date | Tue, 24 Jun 2003 11:52:42 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: Provide example copy_in_user implementation |
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On Tue, 24 Jun 2003, Pavel Machek wrote: > > ...so it should be exactly as fast.
No it shouldn't.
You should do the access_ok() only _once_ (well, twice: once for source and once for dest).
Also, anything that copies memory one byte at a time is just asking to be shot.
Linus
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