Re: [PATCH] rwsem: Make rwsems use interrupt disabling spinlocks

From: Badari Pulavarty
Date: Wed Mar 09 2005 - 12:44:21 EST

Your patch seems to have helped. I don't see the Oops anymore - my
tests are still running (past 1 hour - it used to panic in 10 min).


On Wed, 2005-03-09 at 04:12, David Howells wrote:
> The attached patch makes read/write semaphores use interrupt disabling
> spinlocks, thus rendering the up functions and trylock functions available for
> use in interrupt context.
> I've assumed that the normal down functions must be called with interrupts
> enabled (since they might schedule), and used the irq-disabling spinlock
> variants that don't save the flags.
> Signed-Off-By: David Howells <dhowells@xxxxxxxxxx>
> ---
> warthog>diffstat -p1 rwsem-irqspin-2611mm2.diff

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