507 	buffer = (caddr_t) vm_map_min(pipe_map);  in pipespace_new()
509 	error = vm_map_find(pipe_map, NULL, 0, (vm_offset_t *)&buffer, size, 0,  in pipespace_new()
714 		} else if ((size = rpipe->pipe_map.cnt) != 0) {  in pipe_read()
718 			error = uiomove_fromphys(rpipe->pipe_map.ms,  in pipe_read()
719 			    rpipe->pipe_map.pos, size, uio);  in pipe_read()
724 			rpipe->pipe_map.pos += size;  in pipe_read()
725 			rpipe->pipe_map.cnt -= size;  in pipe_read()
726 			if (rpipe->pipe_map.cnt == 0) {  in pipe_read()
825 	KASSERT(wpipe->pipe_map.cnt == 0,  in pipe_build_write_buffer()
837 	    wpipe->pipe_map.ms, PIPENPAGES);  in pipe_build_write_buffer()
844 	wpipe->pipe_map.npages = i;  in pipe_build_write_buffer()
845 	wpipe->pipe_map.pos =  in pipe_build_write_buffer()
847 	wpipe->pipe_map.cnt = size;  in pipe_build_write_buffer()
868 	KASSERT(wpipe->pipe_map.cnt == 0,  in pipe_destroy_write_buffer()
872 	vm_page_unhold_pages(wpipe->pipe_map.ms, wpipe->pipe_map.npages);  in pipe_destroy_write_buffer()
873 	wpipe->pipe_map.npages = 0;  in pipe_destroy_write_buffer()
893 	size = wpipe->pipe_map.cnt;  in pipe_clone_write_buffer()
894 	pos = wpipe->pipe_map.pos;  in pipe_clone_write_buffer()
895 	wpipe->pipe_map.cnt = 0;  in pipe_clone_write_buffer()
911 	uiomove_fromphys(wpipe->pipe_map.ms, pos, size, &uio);  in pipe_clone_write_buffer()
975 	while (wpipe->pipe_map.cnt != 0) {  in pipe_direct_write()
977 			wpipe->pipe_map.cnt = 0;  in pipe_direct_write()
1131 		if (wpipe->pipe_map.cnt != 0) {  in pipe_write()
1349 		if (mpipe->pipe_map.cnt != 0)  in pipe_ioctl()
1350 			*(int *)data = mpipe->pipe_map.cnt;  in pipe_ioctl()
1405 		if (rpipe->pipe_map.cnt > 0 || rpipe->pipe_buffer.cnt > 0)  in pipe_poll()
1486 	if (pipe->pipe_map.cnt != 0)  in pipe_stat()
1487 		ub->st_size = pipe->pipe_map.cnt;  in pipe_stat()
1570 		vm_map_remove(pipe_map,  in pipe_free_kmem()
1577 		cpipe->pipe_map.cnt = 0;  in pipe_free_kmem()
1578 		cpipe->pipe_map.pos = 0;  in pipe_free_kmem()
1579 		cpipe->pipe_map.npages = 0;  in pipe_free_kmem()
1729 		kn->kn_data = rpipe->pipe_map.cnt;  in filt_piperead()