Re: [PATCH] "volatile considered harmful" document

[Giacomo A. Catenazzi]

Jonathan Corbet wrote:
> +The volatile storage class was originally meant for memory-mapped I/O
> +registers.  Within the kernel, register accesses, too, should be protected

I don't think it deserves to be added in documentation, but just for
reference: in userspace "volatile" is needed in signals (posix mandates
some variables to be volatile, as API, not as funtionality). I don't
know if this was also on the original signal handling.

Anyway user space APIs are not kernel problem ;-)

ciao
	cate
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