Re: [PATCH] net: via-velocity.c fix sleep-with-spinlock bug during MTU change

[Francois Romieu <romieu@fr.zoreil.com>]

Andrew Morton <akpm@linux-foundation.org> :
[...]
> So hrm.  It could all be a lot better.  Just looking quickly at the
> code I _think_ we might be able to do all the needed allocations
> outside the lock and then swizzle them into place after taking the
> lock. ie, something as simple as:
[...]
> 	velocity_init_rd_ring(temp_vptr);	/* Can use GFP_KERNEL! */
> 
> 	spin_lock_irqsave(&vptr->lock, flags);
> 
> 	velocity_free_td_ring(vptr);
> 	velocity_free_rd_ring(vptr);
> 
> 	vptr->foo = temp_vptr->foo;
> 	vptr->bar = temp_vptr->bar;
> 	...
> 
> 	spin_unlock_irqrestore(&vptr->lock, flags);
> 
> ?

Almost.

I'll wrap it in the next 24 hours.

-- 
Ueimor