Re: [PATCH net-next] net: core: Remove the dup_errno parameter in dev_prep_valid_name()

From: Yajun Deng
Date: Tue Jun 18 2024 - 21:55:15 EST


June 18, 2024 at 10:48 PM, "Jakub Kicinski" <kuba@xxxxxxxxxx> wrote:



>
> On Tue, 18 Jun 2024 21:17:43 +0800 Yajun Deng wrote:
>
> >
> > netdev_name_in_use() return -EEXIST makes more sense if it's not NULL.
> >
>
> netdev_name_in_use() returns bool.
>

I should say the netdev_name_in_use() in dev_prep_valid_name() return -EEXIST.

> >
> > But dev_alloc_name() should keep the -ENFILE errno.
> >
>
> And it does.
>
> I don't understand what problem you're trying to fix.
>
> The code is fine as is.
>

This is not a fix.

There are three callers to dev_prep_valid_name(), only dev_alloc_name() needs
to replace -EEXIST with -ENFILE. We shouldn't add an extra parameter for this,
because it's not necessary for the other callers.

If we do it in dev_alloc_name(), the other callers can save a parameter.