Date: Sun, 18 May 1997 13:08:39 +0200 (MEST) From: Christoph Kukulies <kuku@gilberto.physik.RWTH-Aachen.DE> To: dfr@nlsystems.com (Doug Rabson) Cc: kuku@gilberto.physik.RWTH-Aachen.DE, dyson@freebsd.org, current@freebsd.org Subject: Re: can anyone confirm my NFS/VM problem? Message-ID: <199705181108.NAA07993@gil.physik.rwth-aachen.de> In-Reply-To: <Pine.BSF.3.95q.970517164819.5082B-100000@herring.nlsystems.com> from Doug Rabson at "May 17, 97 04:52:46 pm"
next in thread | previous in thread | raw e-mail | index | archive | help
> On Fri, 16 May 1997, Christoph Kukulies wrote: > > > > > I have created a test case to repeat that weird NFS/VM problem I > > have here with a physics production program - the exposed bug is > > really a showstopper for our production and I'm not sure if it is > > not also in 2.2.1R. > > (Don't know if Doug is already going to deal with this group > > of NFS/VM/MMAP problems). Anyway, to assure it is really a > > repeatable problem independent of some local peculiarity here > > at my site, I'm seeking for someone with the following > > configuration: > > Well I think I have a fix. It was bloody painful too. There were some > extremely ugly problems associated with NFS' use of b_validoff and > b_validend. I attempted to fix them but it still feels pretty fragile > although it does pass Ghristoph's test case. I tested it here and can confirm the latter - at least it cures my test case. > > John, could you have a look at these changes and tell me whether they make > sense? > [ patch of kern/vfs_bio.c vm/vm_fault.c vm/vnode_pager.c ommitted ] > -- > Doug Rabson Mail: dfr@nlsystems.com > Nonlinear Systems Ltd. Phone: +44 181 951 1891 > -- Chris Christoph P. U. Kukulies kuku@gil.physik.rwth-aachen.de
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199705181108.NAA07993>