Re: [PATCH v2 5/7] IB/verbs: dereg_mr verb need ib_udata

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On Sun, Oct 14, 2018 at 09:11:16AM +0300, Shamir Rabinovitch wrote:

> diff --git a/drivers/infiniband/core/uverbs_std_types_mr.c b/drivers/infiniband/core/uverbs_std_types_mr.c
> index cf02e774303e..afdf2ab74883 100644
> +++ b/drivers/infiniband/core/uverbs_std_types_mr.c
> @@ -36,7 +36,12 @@
>  static int uverbs_free_mr(struct ib_uobject *uobject,
>  			  enum rdma_remove_reason why)
>  {
> -	return ib_dereg_mr((struct ib_mr *)uobject->object);
> +	struct ib_udata udata = {0};

The ={} is not needed if we call init:

> +	ib_uverbs_init_udata_buf_or_null(&udata, NULL, NULL, 0, 0,
> +					 uobject->context);
> +
> +	return ib_dereg_mr_user((struct ib_mr *)uobject->object, &udata);
>  }

> -int ib_dereg_mr(struct ib_mr *mr)
> +int ib_dereg_mr_user(struct ib_mr *mr, struct ib_udata *udata)
>  {
>  	struct ib_pd *pd = mr->pd;
>  	struct ib_dm *dm = mr->dm;
>  	int ret;
>  
>  	rdma_restrack_del(&mr->res);
> -	ret = mr->device->dereg_mr(mr);
> +	ret = mr->device->dereg_mr(mr, NULL);

Should the NULL be udata??

Jason



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