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Date:      Wed, 22 Oct 2003 16:50:58 +0100
From:      Bruce M Simpson <bms@spc.org>
To:        Dan Nelson <dnelson@allantgroup.com>
Cc:        Kris Kennaway <kris@obsecurity.org>
Subject:   Re: Some mmap observations compared to Linux 2.6/OpenBSD
Message-ID:  <20031022155058.GE3640@saboteur.dek.spc.org>
In-Reply-To: <20031022144043.GI55642@dan.emsphone.com>
References:  <1066789354.21430.39.camel@boxster.onthenet.com.au> <20031022082953.GA69506@rot13.obsecurity.org> <1066816287.25609.34.camel@boxster.onthenet.com.au> <20031022095754.GA70026@rot13.obsecurity.org> <1066820436.25609.93.camel@boxster.onthenet.com.au> <20031022144043.GI55642@dan.emsphone.com>

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On Wed, Oct 22, 2003 at 09:40:44AM -0500, Dan Nelson wrote:
> > The actual commit quote reads:
> > 
> > "use a red-black tree to find entries in the vm_map. augment the
> > red-black tree to find free space between entries.  speeds up memory
> > allocation, etc..."
> > 
> > I am wondering if there is a compelling reason why the technique used
> > by OpenBSD could not be adapted to FreeBSD's VM system.
> 
> Probably just a case of "too much to do and not enough people to do
> it".  FreeBSD already has sys/tree.h, which provides the red-black tree
> macros.

Now accepting patches!

BMS



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