netdev - Re: [net-next 02/14] lib: cpu_rmap: Use allocator for rmap entries

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Date:   Tue, 21 Mar 2023 20:50:50 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Saeed Mahameed <saeed@...nel.org>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Paolo Abeni <pabeni@...hat.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Saeed Mahameed <saeedm@...dia.com>, netdev@...r.kernel.org,
        Tariq Toukan <tariqt@...dia.com>, Eli Cohen <elic@...dia.com>
Subject: Re: [net-next 02/14] lib: cpu_rmap: Use allocator for rmap entries

On Tue, 21 Mar 2023 20:40:28 -0700 Jakub Kicinski wrote:
> > @@ -295,7 +307,11 @@ int irq_cpu_rmap_add(struct cpu_rmap *rmap, int irq)
> >  	glue->notify.release = irq_cpu_rmap_release;
> >  	glue->rmap = rmap;
> >  	cpu_rmap_get(rmap);
> > -	glue->index = cpu_rmap_add(rmap, glue);
> > +	rc = cpu_rmap_add(rmap, glue);
> > +	if (rc == -1)
> > +		return -ENOSPC;  
> 
> which you then have to convert into an errno ?
> 
> Also you leak glue here.

.. and the reference on rmap.