Re: [PATCH net v2] net/smc: prevent device removal during connection setup

[Simon Horman]

On Sun, Aug 23, 2026 at 11:37:17AM +0200, Markus Elfring wrote:
> …
> > This change is limited to the reported SMCR lifetime race. SMC-D device
> > selection has a similar pre-existing borrowed-pointer lifetime issue and
> > requires a separate fix.
> 
> May lock guards be applied?
> https://elixir.bootlin.com/linux/v7.2/source/include/linux/mutex.h#L253

This approach seems fine to me.

Quoting the documentation:

  Use of guard() is discouraged within any function longer than 20 lines,
  scoped_guard() is considered more readable. Using normal lock/unlock is
  still (weakly) preferred.

  Link: https://docs.kernel.org/process/maintainer-netdev.html#using-device-managed-and-cleanup-h-constructs

Reviewed-by: Simon Horman <horms@xxxxxxxxxx>