> +#define READ_ONCE(p) \
> + typeof(p) __val; __read_once_size(&p, &__val, sizeof(__val)); __val; })
> +
> +#define ASSIGN_ONCE(val, p) \
> + ({ typeof(p) __val; __val = val; __assign_once_size(&p, &__val, sizeof(__val)); __val; })
Minor style nit: is it necessary to name a non-pointer variable "p"?
I expect typeof(p) to be a pointer type.
(The other fun style question, which is a lot less minor, is whether
ASSIGN_ONCE should be (src,dst) as above, or (dst,src) like = and
<string.h>.)
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