Re: [PATCH net v1] net: defer __dev_set_promiscuity() to avoid sleeping in atomic context

[Stanislav Fomichev]

On 02/21, I Viswanath wrote:
> On Sat, 21 Feb 2026 at 06:45, Stanislav Fomichev <stfomichev@xxxxxxxxx> wrote:
> > > Do you mean rtnl_lock when you say instance lock?
> >
> > Search for the instance locks in Documentation/networking/netdevices.rst. We
> > essentially need to add netdev_ops_assert_locked to __dev_set_rx_mode
> > and make it work.
> 
> So, the handler should look something like this?
> 
> static void netif_write_rx_mode(struct work_struct *param) {
>  rtnl_lock()
>  netdev_lock()
>  /* Processing */
> netdev_unlock();
>  rtnl_unlock();
> }
> 
> v9 should be out by next week and fixes all the issues I could think
> of so please wait for that

Let's handle instance locking separately, I don't think it's as simple
as adding netdev_ops_lock/unlock.