Re: [PATCH] change lock model in aio_put_req

From: Jeff Moyer
Date: Thu Jun 07 2012 - 10:30:59 EST


mihailov ivan <mihailov.iaa@xxxxxxxxx> writes:

> Why used spin_lock/unlock_irq instead of
> spin_lock_irqsave/spin_unlock_irqrestore?

Because the function is never called from interrupt context.

> __aio_put_req it's interrupt safe call but why aio_put_req not?

__aio_put_req is called with the ctx lock already taken. This (the __
routine being called with the lock held) is a fairly common convention
in the kernel.

Nack. Your patch doesn't fix anything.

Cheers,
Jeff
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