48 	struct mlx4_ib_user_db_page *page;  in mlx4_ib_db_map_user()  local
55 	list_for_each_entry(page, &context->db_page_list, list)  in mlx4_ib_db_map_user()
56 		if (page->user_virt == (virt & PAGE_MASK))  in mlx4_ib_db_map_user()
59 	page = kmalloc(sizeof *page, GFP_KERNEL);  in mlx4_ib_db_map_user()
60 	if (!page) {  in mlx4_ib_db_map_user()
65 	page->user_virt = (virt & PAGE_MASK);  in mlx4_ib_db_map_user()
66 	page->refcnt    = 0;  in mlx4_ib_db_map_user()
67 	page->umem = ib_umem_get(context->ibucontext.device, virt & PAGE_MASK,  in mlx4_ib_db_map_user()
69 	if (IS_ERR(page->umem)) {  in mlx4_ib_db_map_user()
70 		err = PTR_ERR(page->umem);  in mlx4_ib_db_map_user()
71 		kfree(page);  in mlx4_ib_db_map_user()
75 	list_add(&page->list, &context->db_page_list);  in mlx4_ib_db_map_user()
78 	db->dma = sg_dma_address(page->umem->sgt_append.sgt.sgl) +  in mlx4_ib_db_map_user()
80 	db->u.user_page = page;  in mlx4_ib_db_map_user()
81 	++page->refcnt;  in mlx4_ib_db_map_user()