Date: Wed, 28 Feb 2001 09:18:21 -0500 (EST) From: Peter Dufault <dufault@hda.hda.com> To: Anton Berezin <tobez@tobez.org> Cc: hackers@FreeBSD.ORG Subject: Re: how to actually find out whether data hit the disk? Message-ID: <200102281418.f1SEILG28001@hda.hda.com> In-Reply-To: <20010228151102.C29400@heechee.tobez.org> from Anton Berezin at "Feb 28, 2001 03:11:02 pm"
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> > 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. Peter -- Peter Dufault (dufault@hda.com) Realtime development, Machine control, HD Associates, Inc. Fail-Safe systems, Agency approval To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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