Messages in this thread | | | Date | Tue, 17 Jun 2008 14:49:52 -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, Andi Kleen wrote: > > Linus seems to think that copy_to_user() should have > copy_in_user semantics().
No.
I *know* that copy_to/from_user() is supposed to return the number of bytes not copied.
And if you loaded a value but didn't store it to the destination, then BY DEFINITION you didn't copy it.
Comprende?
Obviously you don't.
Gaah. Why do I keep bothering to even _try_ to educate you? Can't you accept that I just fixed a bug, which had a test-case an everything?
Andi, really. Take it from me. If I tell you something, I'm usually right. Think about that for a moment, instead of living in your own little dream-world where you think you understand everything.
Linus
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