hw/mlx5/odp.c

132 	 * The locking here is pretty subtle. Ideally the implicit_children
151 		struct mlx5_ib_mr *mtt = xa_load(&imr->implicit_children, idx);
212  * This must be called after the mr has been removed from implicit_children.
246 	 * mlx5_ib_free_odp_mr() will free everything in the implicit_children
253 	xa_lock(&imr->implicit_children);
254 	if (__xa_cmpxchg(&imr->implicit_children, idx, mr, NULL, GFP_KERNEL) !=
256 		xa_unlock(&imr->implicit_children);
264 	xa_unlock(&imr->implicit_children);
518 	xa_lock(&imr->implicit_children);
519 	ret = __xa_cmpxchg(&imr->implicit_children, idx, NULL, mr,
539 			__xa_erase(&imr->implicit_children, idx);
544 	xa_unlock(&imr->implicit_children);
549 	xa_unlock(&imr->implicit_children);
636 	xa_init(&imr->implicit_children);
678 	xa_for_each(&mr->implicit_children, idx, mtt) {
679 		xa_erase(&mr->implicit_children, idx);
771 		xa_lock(&imr->implicit_children);
772 		mtt = xa_load(&imr->implicit_children, idx);
774 			xa_unlock(&imr->implicit_children);
784 			xa_unlock(&imr->implicit_children);
806 	 * Any time the implicit_children are changed we must perform an
808 	 * implicit_children remains synchronized.
816 	 * the implicit_children is updated, so a parallel page fault could