Re: [NLM] 2.6.27 broken

["J. Bruce Fields" <bfields@fieldses.org>]

On Fri, Nov 28, 2008 at 12:24:47PM +0100, Frank van Maarseveen wrote:
> On Thu, Nov 20, 2008 at 05:27:31PM -0500, J. Bruce Fields wrote:
> > On Sat, Nov 15, 2008 at 02:28:31PM +0100, Frank van Maarseveen wrote:
> > > Try running multiple instances of attached program on 1 NFS client
> > > against a 2.6.27(.5) NFSv3 server:
> > > 
> > > 	gcc -Wall -Wstrict-prototypes -o lck lck.c
> > > 	for i in `seq 30`
> > > 	do
> > > 		lck &
> > > 	done
> > 
> > Or reproduceable using the "flock" utility with:
> > 
> > 	for i in `seq 30`
> > 	do
> > 		flock /mnt/foo sleep 10

(Sorry, note there should be an ampersand at the end there....)

> > 	done
> > 
> > Hm.  What's the last known good server version?
> 
> 2.6.24.4

More precisely, it looks like this started with

	bde74e4bc64415b142e "locks: add special return value for
		asynchronous locks"

But I haven't had the chance to look any harder yet.  Miklos?  Is this
easy for you to reproduce?

--b.