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SubjectRe: PATCH Multithreaded core dump support for the 2.5.14 (and 15) kernel.
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Mark Gross <mgross@unix-os.sc.intel.com> writes:
>
> Any driver that holds a lock across any sleep_on call I think is abusing
> locks and needs adjusting.

That's true for spinlocks, but not for semaphores. The mm layer and the
vfs layer both use semaphores extensively and sleep with them hold,
also some other subsystems (like networking) use sleeping locks.

-Andi

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