On Fri, Oct 08, 2010 at 10:17:14AM +0200, Christoph Hellwig wrote: > On Fri, Oct 08, 2010 at 06:50:01PM +1100, Dave Chinner wrote: > > > There's no need to lock a normal 32-bit variable for readers. > > > > Ok, but will need a memory barrier instead? > > Isn't spin_unlock supposed to be one? I'll need some of the locking > experts to shime in.
Not really a locking expert, but the locking operations are supposed to have an implicit barrier. -chris -- To unsubscribe from this list: send the line "unsubscribe linux-btrfs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
