Re: [PATCH] unnecessary blocking interrupts in exit_notify()

From: Linus Torvalds (torvalds@transmeta.com)
Date: Fri Mar 17 2000 - 19:34:49 EST

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On Fri, 17 Mar 2000, Jun Sun wrote:
>
> Would you please take this patch? It improves interrupt responsiveness,
> especially important for embedded systems.

It has a very serious bug.

It can deadlock due to an interrupt doing a read_lock() on the
tasklist_lock while we hold the write lock.

Linus

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