Re: [PATCH 07/12] x86: use cmpxchg_flag() where applicable

[Linus Torvalds]

Ok, I see nothing horrible in this series.

The one reaction I have is that the cmpxchg_flag() thing returns an
8-bit value, but then a lot of the users end up having to extend it to
a full "int" purely for calling convention reasons (eg I think
'down_write_trylock()' will have 'sete + movzl' - not a new problem,
but since the whole point was to remove extraneous instructions and we
no longer have the silly 'testl', it now annoys me more).

So it seems a bit sad. But I guess it doesn't really matter.

                          Linus
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