netdev - Re: [PATCH net-next 2/2] netpoll: allocate netdev tracker right away

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Date: Fri, 9 Jun 2023 20:46:17 +0200
From: Eric Dumazet <edumazet@...gle.com>
To: Jakub Kicinski <kuba@...nel.org>
Cc: davem@...emloft.net, netdev@...r.kernel.org, pabeni@...hat.com, 
	dsahern@...il.com
Subject: Re: [PATCH net-next 2/2] netpoll: allocate netdev tracker right away

On Fri, Jun 9, 2023 at 8:32 PM Jakub Kicinski <kuba@...nel.org> wrote:
>
> Commit 5fa5ae605821 ("netpoll: add net device refcount tracker to struct netpoll")
> was part of one of the initial netdev tracker introduction patches.
> It added an explicit netdev_tracker_alloc() for netpoll, presumably
> because the flow of the function is somewhat odd.
> After most of the core networking stack was converted to use
> the tracking hold() variants, netpoll's call to old dev_hold()
> stands out a bit.
>
> np is allocated by the caller and ready to use, we can use
> netdev_hold() here, even tho np->ndev will only be set to
> ndev inside __netpoll_setup().
>
> Signed-off-by: Jakub Kicinski <kuba@...nel.org>
> ---
>

Reviewed-by: Eric Dumazet <edumazet@...gle.com>

Thanks.