Date: Thu, 12 Aug 1999 23:52:08 -0700 From: Arun Sharma <adsharma@home.com> To: freebsd-hackers@FreeBSD.ORG Subject: Re: mmap bug Message-ID: <19990812235208.A17058@home.com> In-Reply-To: <E11Escl-000Nxv-00@fanf.noc.demon.net>; from Tony Finch on Thu, Aug 12, 1999 at 12:02:19PM %2B0100 References: <199908111819.LAA26998@implode.root.com> <199908112116.OAA77941@apollo.backplane.com> <E11Escl-000Nxv-00@fanf.noc.demon.net>
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On Thu, Aug 12, 1999 at 12:02:19PM +0100, Tony Finch wrote: > Matthew Dillon <dillon@apollo.backplane.com> wrote: > > > > One solution would be to map clean R+W pages RO and force a write fault > > to occur, allowing the system to recognize that there are too many dirty > > pages in vm_fault before it is too late and flush some of them. The > > downside of this is that, of course, we take unnecessary faults. > > Surely they aren't unnecessary faults if they are required for correctness? They _are_ unnecessary faults, if other correct solutions exist. The second alternative - to mark system daemons as special sounds much more attractive. -Arun To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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