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Commit cebfe5ca authored by Or Gerlitz's avatar Or Gerlitz Committed by Doug Ledford
Browse files

staging/o2iblnd: Avoid calling ib_query_device 



Instead, use the cached copy of the attributes present on the device.

Signed-off-by: default avatarOr Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent e3e45b1b

drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c

+1 −20
Original line number Diff line number Diff line
@@ -2070,32 +2070,13 @@ static int kiblnd_net_init_pools(kib_net_t *net, __u32 *cpts, int ncpts) 


static int kiblnd_hdev_get_attr(kib_hca_dev_t *hdev)

{

	struct ib_device_attr *attr;

	int rc;



	/* It's safe to assume a HCA can handle a page size

	 * matching that of the native system */

	hdev->ibh_page_shift = PAGE_SHIFT;

	hdev->ibh_page_size  = 1 << PAGE_SHIFT;

	hdev->ibh_page_mask  = ~((__u64)hdev->ibh_page_size - 1);



	LIBCFS_ALLOC(attr, sizeof(*attr));

	if (attr == NULL) {

		CERROR("Out of memory\n");

		return -ENOMEM;

	}



	rc = ib_query_device(hdev->ibh_ibdev, attr);

	if (rc == 0)

		hdev->ibh_mr_size = attr->max_mr_size;



	LIBCFS_FREE(attr, sizeof(*attr));



	if (rc != 0) {

		CERROR("Failed to query IB device: %d\n", rc);

		return rc;

	}



	hdev->ibh_mr_size = hdev->ibh_ibdev->attrs.max_mr_size;

	if (hdev->ibh_mr_size == ~0ULL) {

		hdev->ibh_mr_shift = 64;

		return 0;