On 7/27/20 9:25 AM, Mark Johnston wrote: > + > + /* > + * We may be attempting to free the page as part of the handling for an > + * I/O error, in which case the page was xbusied by a different thread. > + */ > + vm_page_xbusy_claim(m); I've just noticed that vm_page_xbusy_claim() ignores the WAITERS bit. Is this not a problem in practice? Eric