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Re: Usage of Semaphore with a workqueue

Hi

On Wed, Apr 1, 2009 at 10:12 PM, Devesh Sharma <devesh28@xxxxxxxxx> wrote:
> Hello list,
>
> Consider a case where I have a workqueue, a work is submitted to a it
> from some interrupt handler
> Lets say, some where in a code, it tries to get some semaphore to
> enter into a critical section,
> and fails to get it, sholud I still return from the work function by
> returning ERESTARTSYS?
> Kindly somebody clarify this to me

To the best I know, when you fail to get semaphore, your code path
will be blocked. Since you use workqueue which is able to sleep
safely, I think you don't need to return ERESTARTSYS. The workqueue
will sleep and try to reacquire the semaphore.

regards,

Mulyadi.

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