[OpenAFS-devel] [PATCH] fix openafs crashes on linux 2.6.10-2.6.12,
and all RHEL4 kernels
Christopher Allen Wing
wingc@engin.umich.edu
Wed, 18 Apr 2007 15:13:24 -0400 (EDT)
On Wed, 18 Apr 2007, Chaskiel M Grundman wrote:
> AFS_GLOCK is intended to prevent smp concurrency (and preemption). It also
> provides mutual exclusion for ObtainXXXLock. AFS_GLOCK is dropped almost any
> time the cache manager is going to sleep.
So the cross-platform AFS kernel code assumes a uniprocessor,
non-preemptive kernel, and AFS_GLOCK() is used so that the actual kernel
environment conforms to this? Okay, that makes sense now.
Thanks,
Chris
wingc@engin.umich.edu