On Sun, Jul 31, 2011 at 11:10:14PM +0800, Wu Fengguang wrote: > On Sat, Jul 30, 2011 at 09:44:22PM +0800, Christoph Hellwig wrote: > > This patch fixes the hang for me. > > Thanks. It'd be better to get the _simple and tested_ fix into 3.1-rc1. > (if anyone find major problems with the fix, please speak up) Yes, I already have, a couple of hours before you sent this: http://www.spinics.net/lists/linux-fsdevel/msg47357.html We haven't found the root cause of the problem, and writeback cannot hold off grab_super_passive() because writeback only holds read locks on s_umount, just like grab_super_passive. So if grab_super_passive is failing, there is some other, not yet unidentified actor causing this problem.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
