789 	struct userfaultfd_unmap_ctx *unmap_ctx;  in has_unmap_ctx()  local
791 	list_for_each_entry(unmap_ctx, unmaps, list)  in has_unmap_ctx()
792 		if (unmap_ctx->ctx == ctx && unmap_ctx->start == start &&  in has_unmap_ctx()
793 		    unmap_ctx->end == end)  in has_unmap_ctx()
804 		struct userfaultfd_unmap_ctx *unmap_ctx;  in userfaultfd_unmap_prep()  local
811 		unmap_ctx = kzalloc(sizeof(*unmap_ctx), GFP_KERNEL);  in userfaultfd_unmap_prep()
812 		if (!unmap_ctx)  in userfaultfd_unmap_prep()
817 		unmap_ctx->ctx = ctx;  in userfaultfd_unmap_prep()
818 		unmap_ctx->start = start;  in userfaultfd_unmap_prep()
819 		unmap_ctx->end = end;  in userfaultfd_unmap_prep()
820 		list_add_tail(&unmap_ctx->list, unmaps);  in userfaultfd_unmap_prep()