Re: kern/50375: layerfs (nullfs) locking problem leading to livelock

[Jeff Rizzo <riz%tastylime.net@localhost>]

The following reply was made to PR kern/50375; it has been noted by GNATS.

From: Jeff Rizzo <riz%tastylime.net@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/50375: layerfs (nullfs) locking problem leading to livelock
Date: Sat, 31 Oct 2015 09:43:04 -0700

 On 10/30/15 9:29 AM, J. Hannken-Illjes wrote:
 > Please try the attached patch.  It will take the vnode lock before
 > the vnode is marked VI_CHANGING and fed to vclean().
 >
 > vclean() should no longer block.
 >
 > --
 > J. Hannken-Illjes - hannken%eis.cs.tu-bs.de@localhost - TU Braunschweig (Germany)
 
 I have been running my pbulk build for about 18 hours, with no deadlock 
 so far.  Not the longest I've ever gone, but certainly the longest I've 
 gone for a while.
 
 I'll report back in a few days, but this looks really good so far. Thanks!