Date: Tue, 24 Aug 2004 09:56:42 -0400 From: John Baldwin <jhb@FreeBSD.org> To: Robert Watson <rwatson@FreeBSD.org> Cc: cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/vm vm_fault.c Message-ID: <200408240956.42487.jhb@FreeBSD.org> In-Reply-To: <Pine.NEB.3.96L.1040822001718.95496H-100000@fledge.watson.org> References: <Pine.NEB.3.96L.1040822001718.95496H-100000@fledge.watson.org>
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On Sunday 22 August 2004 12:18 am, Robert Watson wrote: > On Sun, 22 Aug 2004, Brian Fundakowski Feldman wrote: > > Also, it was the system_map lock, so it was a mutex, not an sx. > > > > /Goes back to trying to figure out wtf portupgrade -rR kde\* keeps > > causing > > hangs, but only in X, not at the command line, and not seemingly > > dependant on AGP/X driver. > > I believe mutexes are alright also as long as you're careful about > sleeping and lock order. I.e., don't sleep while holding a > non-funnel-like mutex, etc. Witness hardcodes that Giant comes before all other mutexes. -- John Baldwin <jhb@FreeBSD.org> <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org
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