Date: Mon, 12 Sep 2005 12:40:49 -0400 From: Jung-uk Kim <jkim@FreeBSD.org> To: src-committers@FreeBSD.org Cc: cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/kern vfs_subr.c Message-ID: <200509121240.51775.jkim@FreeBSD.org> In-Reply-To: <200509121531.j8CFVSxj055317@repoman.freebsd.org> References: <200509121531.j8CFVSxj055317@repoman.freebsd.org>
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On Monday 12 September 2005 11:31 am, Jung-uk Kim wrote: > jkim 2005-09-12 15:31:28 UTC > > FreeBSD src repository > > Modified files: > sys/kern vfs_subr.c > Log: > use monotonic `time_uptime' instead of `time_second' > > Approved by: anholt (mentor) > Discussed on: arch > > Revision Changes Path > 1.645 +4 -4 src/sys/kern/vfs_subr.c Please make sure to use `time_uptime' if you need monotonic timestamp. Especially many network stacks seem to make sequence IDs and timestamps to expire from `time_second' instead of time_uptime. time_second is not guaranteed to be monotonic! time_uptime is. http://docs.freebsd.org/cgi/mid.cgi?8153.1126340565 http://docs.freebsd.org/cgi/mid.cgi?20050909214808.GA6021 I was almost tempted to do `sed -i -e 's/time_second/time_uptime' net*' (with few exceptions) but I wasn't sure how many standards really demand time_second in their actual packets/cells. :-( Thanks, Jung-uk Kim
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