On Mon, Apr 25, 2016 at 6:00 PM, Tejun Heo <tj@xxxxxxxxxx> wrote: > On Mon, Apr 25, 2016 at 11:48:47AM -0400, Tejun Heo wrote: >> Heh, excellent debugging. I wonder how old this bug is. cc'ing David > > I just went through the history. So, we used to have clear_bit() > instead of atomic_long_set() but clear_bit() doesn't imply any barrier > either, so kudos to you. You just debugged an issue which is most > likely has been there for over a decade! :) That's nice, that we can finally fix it. But as I was saying I was just lucky enough to have very easy reproduction. I could check all crazy ideas I had :) -- Roman -- To unsubscribe from this list: send the line "unsubscribe linux-block" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
