devctl (alike?) for devfs

[Andriy Gapon]

on 25/04/2008 12:50 Kostik Belousov said the following:
> Did you run this with WITNESS ?
> 
> You put the whole devctl_notify() call under the dev_mtx. This includes
> the malloc(), PROC_LOCK() and signalling, and some internal devctl_queue()
> stuff. This is wrong.

Kostik,

I tried this patch only with my working (non-debug) configuration.
I will try with WITNESS.
You think that acquiring all those locks while holding dev_mtx is bad?
I can try to place devctl_notify calls in make_dev_credv, make_dev_alias 
and destroy_dev. The problem that I see is that destroy_devl ('l' at the 
end) calls itself recursively for child devices, this is all done under 
dev_mtx. So I am not sure how to call devctl_notify for those child 
devices properly.

-- 
Andriy Gapon