Re: wireless locking simplifications

[Johannes Berg <johannes@sipsolutions.net>]

On Wed, 2023-05-10 at 12:58 +0200, Johannes Berg wrote:
> Hi Tejun,
> 
> > There isn't currently but workqueue already does something similar for
> > freezing by temporarily setting max_active to zero, so if you apply a patch
> > like the following
> 
> Thanks for that! I came up with a bit of a different patch, see below.
> 

But ... this raises another interesting thing.

Now I have to call workqueue_resume() somewhere. But that means I need
two versions of wiphy_unlock(), one that does the resume and one that
doesn't, which is interesting. I can track it I think though.

This is probably a stretch ;-) But what would you think about a
workqueue variant that gets a mutex pointer to hold for all work
structs? Then we'd not really have to worry about that in each of them.
But it's not great to implement, I just tried a bit.

johannes