On Sun, 2013-12-15 at 21:49 -0500, Alan Stern wrote: > On Sun, 15 Dec 2013, James Bottomley wrote: > > > No, I was thinking of the two thread scan bug (i.e. two scan threads) > > not one scan and one remove, which is a bug in the old code. > > By the way, the existing code doesn't allow two threads to scan a > target at the same time. They would both have to hold the host's > scan_mutex. I thought of that, but it's dropped too early. That makes the race almost untriggerable because the racing thread starts way behind, but it's not theoretically impossible. > On the other hand, as far as I can see there's nothing to prevent two > threads from removing a device at the same time. But that wouldn't > cause any problems. Right. Thanks, James -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
