Date: Sat, 27 Aug 2011 10:59:03 +0100 From: "Robert N. M. Watson" <rwatson@freebsd.org> To: Benjamin Kaduk <kaduk@MIT.EDU> Cc: freebsd-arch@freebsd.org Subject: Re: Removing Giant from VFS in 10.0 (was: Re: skipping locks, mutex_owned, usb) Message-ID: <DBD3B7B0-0172-4941-956F-BF210810A6A4@freebsd.org> In-Reply-To: <alpine.GSO.1.10.1108262140240.1411@multics.mit.edu> References: <4E53986B.5000804@FreeBSD.org> <201108230911.09021.jhb@freebsd.org> <4E564F15.3010809@FreeBSD.org> <201108250945.24606.jhb@freebsd.org> <4e576127.Suqlhieb0FMDx8cB%perryh@pluto.rain.com> <alpine.BSF.2.00.1108261007110.48200@fledge.watson.org> <alpine.GSO.1.10.1108262140240.1411@multics.mit.edu>
next in thread | previous in thread | raw e-mail | index | archive | help
On 27 Aug 2011, at 02:43, Benjamin Kaduk wrote: > On Fri, 26 Aug 2011, Robert Watson wrote: > >> We also need to start announcing this early in the 10.0 cycle so that third-party file system developers for FreeBSD -- especially anyone interested in things like OpenAFS and Fuse, can do appropriate updates there as well. > > For what it's worth, OpenAFS already passes MNTK_MPSAFE /* solid steel */, with what I expect is nearly-correct locking. Excellent! (Although I guess OpenAFS internally has the moral equivalent of a Giant lock that protects its own structures, but that's an entirely independent problem that the OpenAFS community is already interested in?) Robert
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?DBD3B7B0-0172-4941-956F-BF210810A6A4>