Date: Fri, 2 Mar 2001 14:31:49 +0100 From: Anton Berezin <tobez@tobez.org> To: Dag-Erling Smorgrav <des@ofug.org> Cc: Peter Dufault <dufault@hda.hda.com>, hackers@FreeBSD.ORG Subject: Re: how to actually find out whether data hit the disk? Message-ID: <20010302143149.D55912@heechee.tobez.org> In-Reply-To: <xzpvgpsmimh.fsf@flood.ping.uio.no>; from des@ofug.org on Fri, Mar 02, 2001 at 01:59:34PM %2B0100 References: <200102281418.f1SEILG28001@hda.hda.com> <xzpvgpsmimh.fsf@flood.ping.uio.no>
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On Fri, Mar 02, 2001 at 01:59:34PM +0100, Dag-Erling Smorgrav wrote: > Peter Dufault <dufault@hda.hda.com> writes: > > > > Do an msync with MS_SYNC someplace. Also, use MAP_NOSYNC in > > > > mmap until 4.3 when Matt Dillon plans to make that the default behavior. > > > Ahh, no. That's the other way around - I do not *want* it to hit the > > > disk, but would like to *know* when it nevertheless does. > > OK, doing a stat and checking the mtime should give you > > the info at the expense of polling, I can't think of another way. > > Won't help. You'll get the same mtime no matter whether the file is > actually written to disk or not. That's what I suspected. :-( So is there a way, or is not? Thanks, -- May the tuna salad be with you. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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