From owner-freebsd-hackers  Wed Nov 28  2: 0:32 2001
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Date: Wed, 28 Nov 2001 01:53:43 -0800 (PST)
From: Julian Elischer <julian@elischer.org>
To: setantae <setantae@submonkey.net>
Cc: =?iso-8859-1?Q?G=E9rard?= Roudier <groudier@free.fr>,
	Andrey Pugachev <A110C@svs.ru>, freebsd-hackers@FreeBSD.ORG
Subject: Re: Does FreeBSD support copy-on-write pages?
In-Reply-To: <20011127215236.GA16727@rhadamanth>
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386BSD got it from the MACH Vm=20
which was grafted into BSD some time in 1990 or the late 80's


On Tue, 27 Nov 2001, setantae wrote:

> On Tue, Nov 27, 2001 at 06:31:31PM +0100, G=E9rard Roudier wrote:
> >=20
> >=20
> > On Tue, 27 Nov 2001, setantae wrote:
> >=20
> > > On Tue, Nov 27, 2001 at 06:54:17PM -0000, Andrey Pugachev wrote:
> > > > I am just curious, can FreeBSD kernel perform function called copy-=
on-write?
> > >
> > > As far as I am aware, the BSD family of operating systems have always
> > > used copy-on-write (at least since 4.3BSD).
> >=20
> > My awareness is different and tells me that 4.3BSD had just vfork() but
> > not COW yet, while System V had it years before. Sorry if I am wrong.
>=20
> You're not.  My bad.
> At home now, and checking my daemon book I see SystemV, Release 2 got it =
in
> 1984, and it was introduced in 4.4BSD in 1993.
>=20
> Ceri
>=20
> --=20
> keep a mild groove on
>=20
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>=20


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