[OpenAFS-devel] Linux deadlocks (possibly fixed in IBM-AFS)

Wed, 3 Jul 2002 14:09:34 -0400

We could recreate this by creating a directory with 30000+ files
and running 5 or more instances of "ls --color=tty" at the same
time in that directory.

                      "Neulinger, Nathan"                                                                                                 
                      <nneul@umr.edu>             To:       "chas williams" <chas@cmf.nrl.navy.mil>                                       
                      Sent by:                    cc:       "OpenAFS-Devel Mailing List (E-mail)" <openafs-devel@openafs.org>             
                      openafs-devel-admin@        Subject:  RE: [OpenAFS-devel] Linux deadlocks (possibly fixed in IBM-AFS)               
                      openafs.org                                                                                                         

                      07/03/2002 01:05 PM                                                                                                 
                      Please respond to                                                                                                   
                      "Neulinger, Nathan"                                                                                                 

It would be nice if we could put together test cases for some of
these... I've got a few various test things that I run for problems that
have occurred in the past, but might be nice if we had something as part
of the repository that could be added to easily...

-- Nathan

------------------------------------------------------------
Nathan Neulinger                       EMail:  nneul@umr.edu
University of Missouri - Rolla         Phone: (573) 341-4841
Computing Services                       Fax: (573) 341-4216

> -----Original Message-----
> From: chas williams [mailto:chas@cmf.nrl.navy.mil]
> Sent: Wednesday, July 03, 2002 10:35 AM
> To: Broughton, Travis V
> Cc: OpenAFS-Devel Mailing List (E-mail)
> Subject: Re: [OpenAFS-devel] Linux deadlocks (possibly fixed
> in IBM-AFS)
>
>
> >          srikanth-IY31752-afs3.6-race-condition-in-afs-buffer-cache 1.2
>
> i cannot comment on this.  with the description though it should be
> easy to check/fix/add.
>
> >          srikanth-12885-afs3.6-race.condition.in.linux.event.handling
1.5
>
> i believe i helped srikanth with this issue -- he messaged this list
> about the problem.  i developed what i consider a 'correct' fix which
> is in the latest devel and stable releases.  its probably
> similar, although
> however, i also eliminated the glock droppping in
> osi_linux_alloc() since
> you could still 'loose' a wakeup when adding the event the first time
> through the loop.
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