Date: Sun, 20 Oct 1996 12:10:02 -0700 (PDT) From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: freebsd-bugs Subject: Re: docs/1851: madvise MADV_FREE manual page clarification Message-ID: <199610201910.MAA08574@freefall.freebsd.org>
next in thread | raw e-mail | index | archive | help
The following reply was made to PR docs/1851; it has been noted by GNATS. From: Luigi Rizzo <luigi@labinfo.iet.unipi.it> To: dtc@scrooge.ee.swin.oz.au (Douglas Thomas Crosher) Cc: FreeBSD-gnats-submit@freebsd.org Subject: Re: docs/1851: madvise MADV_FREE manual page clarification Date: Sun, 20 Oct 1996 19:29:12 +0100 (MET) > I have a slight query on the behaviour of MADV_FREE. My initial > interpretation was that after a MADV_FREE a page would either be zero > filled or remain unchanged. However I found that pages could have > different data in them after the MADV_FREE call. ... > > Perhaps the documentation could be made a little clearer, I suggest: > "... The next time that the page is referenced, the page might be > demand zeroed, or might contain random data." One thing I would like is to have a slightly different version of MADV_FREE which _guarantees_ the page to be zero-filled on demand. John Dyson said it would not hard at all (if I only knew how... :) Luigi ==================================================================== Luigi Rizzo Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it Universita' di Pisa tel: +39-50-568533 via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 http://www.iet.unipi.it/~luigi/ ====================================================================
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199610201910.MAA08574>