Messages in this thread | | | From | David Mosberger <> | Date | Mon, 29 Jul 2002 14:48:39 -0700 | Subject | RE: [Linux-ia64] Linux kernel deadlock caused by spinlock bug |
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>>>>> On Mon, 29 Jul 2002 16:29:09 -0500, "Van Maren, Kevin" <kevin.vanmaren@unisys.com> said:
Van> Yes, but that isn't the point: unless you eliminate all rw Van> locks, it is conceptually possible to cause a kernel deadlock Van> by forcing contention on the locks you didn't remove, if the Van> user can force the kernel to acquire a reader lock and if Van> something else needs to acquire the writer lock. Correctness Van> is the issue, not performance.
I agree with Kevin here. There must be some argument as to why readers cannot indefinitely lock out a writer. A probabilistic argument is fine, but just saying "contention doesn't happen" certainly isn't good enough.
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