Re: 2.6.39-rc0: umount tmpfs hangs

[Al Viro]

On Mon, Mar 21, 2011 at 08:30:23AM +0300, Alexander Beregalov wrote:

> > rcu_barrier() hanging for some reason... ??I really wonder what's going
> > on there - missing rcu_read_unlock()? ??Could you try to reproduce that
> > sucker and, if possible, bisect it?
> 
> Yes, it's reproducible, but I'm bisecting another issue and have few
> more such issues with the current kernel.

Could you post the reproducer?  Simple mounting tmpfs and umount explicitly
doesn't seem to trigger it; doing some IO on that fs doesn't change that,
ditto for umount done by shutdown instead of doing it manually...
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/