Re: [RFC] PCI device list locking - take 2

Chris Wright (chris@wirex.com)
Wed, 18 Jun 2003 17:20:07 -0700

* Greg KH (greg@kroah.com) wrote:
> On Wed, Jun 18, 2003 at 04:32:37PM -0700, Chris Wright wrote:
> > I'm not sure testing a valid ->next makes sense. It could be non-NULL,
> > but poison, or if it was using list_del_init, it would be stuck in loop.
>
> When we take the devices off of the list, after list_del(), still under
> the lock, we can null out the list pointers. Then, later under the
> lock, we can check the pointer before we move to it. We aren't doing
> fancy list_* functions with the pci device lists at all.

Ah, ok, that should work.

thanks,
-chris

-- 
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