There is a xa_lock_irqsave()/ublock_irqrestore but I actually need
some things that they don't support.
In particular there is not an option to call xa_alloc_cyclic_irqsave
and I also need an irqsave version
of kref_put_lock and had to code one which calls the refcount version
but again that takes the address
of a lock and not an xarray. All this is because rdmacm is crazy and
makes verbs api calls with
spinlocks held.
Bob
On Mon, Feb 28, 2022 at 10:57 AM Jason Gunthorpe <jgg@xxxxxxxxxx> wrote:
>
> On Fri, Feb 25, 2022 at 01:57:44PM -0600, Bob Pearson wrote:
>
> > +void *rxe_pool_get_index(struct rxe_pool *pool, u32 index)
> > +{
> > + struct rxe_pool_elem *elem;
> > + unsigned long flags;
> > + void *obj;
> > +
> > + spin_lock_irqsave(&pool->xa.xa_lock, flags);
>
> You can't reach into the xa_lock like this, use the xa_lock()
> family of functions instead, everywhere.
>
> Jason
