Am 26.03.2015 um 18:52 schrieb Linus Torvalds: > On Thu, Mar 26, 2015 at 10:24 AM, Christian Borntraeger > <borntraeger@xxxxxxxxxx> wrote: >> >> Oh I just added that check back then because some guy named >> Linus suggested something like that ;-) > > Yes, my bad. > > In my defense, that was when we were talking about ACCESS_ONCE() > causing bugs with gcc due to the blind use of "volatile" that it turns > out gcc doesn't necessarily like. > > With the memcpy fallback (and the simpler "scalar pointer copy by > hand"), I think READ_ONCE() (and WRITE_ONCE()) are safe. > > Linus > FWIW, I dropped the warning fixp patch from my linux-next branch so everything should be back to normal and we can merge Peters patch for 4.0 or 4.1. Christian -- To unsubscribe from this list: send the line "unsubscribe linux-next" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
