Re: [PATCH AUTOSEL 6.0 17/77] genetlink: hold read cb_lock during iteration of genl_fam_idr in genl_bind()

[Sasha Levin]

On Mon, Oct 10, 2022 at 08:49:46AM -0700, Jakub Kicinski wrote:
> On Sun,  9 Oct 2022 18:06:54 -0400 Sasha Levin wrote:
> > In genl_bind(), currently genl_lock and write cb_lock are taken
> > for iteration of genl_fam_idr and processing of static values
> > stored in struct genl_family. Take just read cb_lock for this task
> > as it is sufficient to guard the idr and the struct against
> > concurrent genl_register/unregister_family() calls.
> >
> > This will allow to run genl command processing in genl_rcv() and
> > mnl_socket_setsockopt(.., NETLINK_ADD_MEMBERSHIP, ..) in parallel.
>
> Not stable material, please drop.

Will do, thanks!

--
Thanks,
Sasha