From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Fri, 28 Nov 2008 13:51:25 +0000 From: Alan Cox Subject: Re: [PATCH 0/4] ksm - dynamic page sharing driver for linux v2 Message-ID: <20081128135125.1ee31684@lxorguk.ukuu.org.uk> In-Reply-To: References: <1226888432-3662-1-git-send-email-ieidus@redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Dmitri Monakhov Cc: Izik Eidus , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, kvm@vger.kernel.org, aarcange@redhat.com, chrisw@redhat.com, avi@redhat.com, dlaor@redhat.com, kamezawa.hiroyu@jp.fujitsu.com, cl@linux-foundation.org, corbet@lwn.net List-ID: > 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/browse_thread/thread/387af278089c7066?ie=utf-8&oe=utf-8&q=share+identical+pages#b3d4f68fb5dd4f88 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org