On 2025-02-22 07:25:43 [+0900], Sergey Senozhatsky wrote:
> index 03710d71d022..1288a4120855 100644
> --- a/mm/zsmalloc.c
> +++ b/mm/zsmalloc.c
> @@ -1377,6 +1377,135 @@ void zs_unmap_object(struct zs_pool *pool, unsigned long handle)
> }
> EXPORT_SYMBOL_GPL(zs_unmap_object);
>
> +void *zs_obj_read_begin(struct zs_pool *pool, unsigned long handle,
> + void *local_copy)
> +{
> + struct zspage *zspage;
> + struct zpdesc *zpdesc;
> + unsigned long obj, off;
> + unsigned int obj_idx;
> + struct size_class *class;
> + void *addr;
> +
> + WARN_ON(in_interrupt());
This macro is deprecated. Could you come up with something else like
!in_task() if needed?
> + /* Guarantee we can get zspage from handle safely */
> + read_lock(&pool->lock);
> + obj = handle_to_obj(handle);
> + obj_to_location(obj, &zpdesc, &obj_idx);
> + zspage = get_zspage(zpdesc);
…
Sebastian
