On Sat 2009-01-03 20:19:55, Alan Cox wrote: > On Sat, 3 Jan 2009 13:44:00 +0100 > Pavel Machek <pavel@xxxxxxx> wrote: > > > Linux relies on unsigned long to behave like atomic for read/write. > > Actually it isn't that simple and this advice shouldn't be given IMHO. > > unsigned long is not the same as atomic in several respects including > ordering and caching of the result. Ok... I keep seeing patches using int/long instead of atomic and claiming that it is okay. If it is okay and linux relies on it, it should be documented. If it is not okay, I guess we should document it, too -- it seems to be common mistake. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
