Re: [PATCH] vhost-vdpa: Remove usage of the deprecated ida_simple_xx() API

[Christophe JAILLET]

Le 14/04/2024 à 10:35, Michael S. Tsirkin a écrit :
> On Mon, Jan 15, 2024 at 09:35:50PM +0100, Christophe JAILLET wrote:
> > ida_alloc() and ida_free() should be preferred to the deprecated
> > ida_simple_get() and ida_simple_remove().
> >
> > Note that the upper limit of ida_simple_get() is exclusive, buInputt the one of
>
> What's buInputt? But?

Yes, sorry. It is "but".

Let me know if I should send a v2, or if it can be fixed when it is applied.

CJ

> > ida_alloc_max() is inclusive. So a -1 has been added when needed.
> >
> > Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
>
>
> Jason, wanna ack?
>
> > ---
> >   drivers/vhost/vdpa.c | 6 +++---
> >   1 file changed, 3 insertions(+), 3 deletions(-)
> >
> > diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c
> > index bc4a51e4638b..849b9d2dd51f 100644
> > --- a/drivers/vhost/vdpa.c
> > +++ b/drivers/vhost/vdpa.c
> > @@ -1534,7 +1534,7 @@ static void vhost_vdpa_release_dev(struct device *device)
> >   	struct vhost_vdpa *v =
> >   	       container_of(device, struct vhost_vdpa, dev);
> >   
> > -	ida_simple_remove(&vhost_vdpa_ida, v->minor);
> > +	ida_free(&vhost_vdpa_ida, v->minor);
> >   	kfree(v->vqs);
> >   	kfree(v);
> >   }
> > @@ -1557,8 +1557,8 @@ static int vhost_vdpa_probe(struct vdpa_device *vdpa)
> >   	if (!v)
> >   		return -ENOMEM;
> >   
> > -	minor = ida_simple_get(&vhost_vdpa_ida, 0,
> > -			       VHOST_VDPA_DEV_MAX, GFP_KERNEL);
> > +	minor = ida_alloc_max(&vhost_vdpa_ida, VHOST_VDPA_DEV_MAX - 1,
> > +			      GFP_KERNEL);
> >   	if (minor < 0) {
> >   		kfree(v);
> >   		return minor;
> > --
> > 2.43.0