Messages in this thread | | | Date | Tue, 26 May 2009 14:04:08 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH] cls_cgroup: read classid atomically in classifier |
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On Tue, 26 May 2009 12:59:11 -0700 Paul Menage <menage@google.com> wrote:
> Avoid reading the unsynchronized value cs->classid multiple times, > since it could change concurrently from non-zero to zero; this would > result in the classifier returning a positive result with a bogus > (zero) classid.
When this race occurs, what are the user-visible consequences?
People who need to decide to which kernels a patch should be applied like to know such things.
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