Messages in this thread | | | Date | Tue, 17 Jun 2008 14:34:01 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: BUG: mmapfile/writev spurious zero bytes (x86_64/not i386, bisected, reproducable) |
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On Tue, 17 Jun 2008, Linus Torvalds wrote: > > It is "copy_user". Notice the lack of "from" or "to". That code handles > *both* copy_to_user and copy_from_user.
Oh, and yes, I said "copy_to_user_inatomic()" by mistake. The fact is that "write()" obviously does copy_from_user, but more importantly that on x86 it's THE EXACT SAME ROUTINE.
Linus
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