Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v2 [LWN.net]

From:		Alan Cox <alan-AT-lxorguk.ukuu.org.uk>
To:		Dmitri Monakhov <dmonakhov-AT-openvz.org>
Subject:		Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v2
Date:		Fri, 28 Nov 2008 13:51:25 +0000
Message-ID:		<20081128135125.1ee31684@lxorguk.ukuu.org.uk>
Cc:		Izik Eidus <ieidus-AT-redhat.com>, akpm-AT-linux-foundation.org, linux-kernel-AT-vger.kernel.org, linux-mm-AT-kvack.org, kvm-AT-vger.kernel.org, aarcange-AT-redhat.com, chrisw-AT-redhat.com, avi-AT-redhat.com, dlaor-AT-redhat.com, kamezawa.hiroyu-AT-jp.fujitsu.com, cl-AT-linux-foundation.org, corbet-AT-lwn.net
Archive-link:		Article, Thread

> You have implemented second one, but seems it already was patented
> http://www.google.com/patents?vid=USPAT6789156
> I'm not a lawyer but IMHO we have direct conflict here.
> >From other point of view they have patented the WEEL, but at least we
> have to know about this.

Its an old idea and appeared for Linux in March 1998: Little project from
Philipp Reisner called "mergemem".

http://groups.google.com/group/muc.lists.linux-kernel/bro...

so if there is a patent which is relevant (and thats a question for
lawyers and legal patent search people) perhaps the Linux Foundation and
some of the patent busters could take a look at mergemem and
re-examination.

Alan
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