i386 hangs during halt "vnodes remaining... 0 time out"

[Konstantin Belousov]

On Sun, Apr 22, 2018 at 04:55:13PM +0200, Tijl Coosemans wrote:
> On Sun, 22 Apr 2018 16:28:55 +0300 Konstantin Belousov <kostikbel at gmail.com> wrote:
> > On Sun, Apr 22, 2018 at 03:15:00PM +0200, Tijl Coosemans wrote:
> >> Thanks for the review.  There's just one concern I have.  With this patch
> >> the bufspace_daemon threads appear to shutdown after the buf_daemon and
> >> after the syncer because the event handlers are registered later.  Are
> >> there any dependencies between these processes that require the bufspace
> >> threads to be stopped earlier?  
> > 
> > I think for correctness bufdaemon must stop after the syncer, since syncer
> > operation can cause a situation where bufdaemon help is needed to proceed.
> > Other than this, the stop order is irrelevant, because after syncer
> > finished, there should be no any further filesystem activity.
> 
> A quick way to do that would be to use SHUTDOWN_PRI_LAST + 100 for the
> event handlers in the patch, like shutdown_conf in kern_shutdown.c
> already does.  Is that acceptable here as well?

I do not see why not.