On Thu, Aug 01, 2002 at 01:39:55PM -0400, anton wilson wrote:
> driver_read(){
> spin_lockirq_save(&(data->spinlock), flags)
> /* use data*/
> spinlock_irq_restore(&(data->spinlock), flags);
> }
>
> driver_disconnect()
> {
> if(data)
> {
> kfree(data);
> }
> }
> I see a problem here if for instance disconnect freed the data while read was
> using it. Am I right?
There is probably going to be a problem to use the lock when freeing the
datastructure. If you move the lock somewhere else (say a hashtable of
locks) you could then use the lock to protect the kfree(data);.
--
http://www.wirex.com/
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