From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from [213.170.72.194] (helo=shelob.oktetlabs.ru) by canuck.infradead.org with esmtp (Exim 4.42 #1 (Red Hat Linux)) id 1CN9U2-0008KI-Oe for linux-mtd@lists.infradead.org; Thu, 28 Oct 2004 08:34:31 -0400 Message-ID: <4180E732.70608@yandex.ru> Date: Thu, 28 Oct 2004 16:33:54 +0400 From: "Artem B. Bityuckiy" MIME-Version: 1.0 To: David Woodhouse References: <417F961A.1090107@yandex.ru> <1098881953.13633.1786.camel@hades.cambridge.redhat.com> <417FA408.9080906@yandex.ru> <1098884706.13633.1791.camel@hades.cambridge.redhat.com> In-Reply-To: <1098884706.13633.1791.camel@hades.cambridge.redhat.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Cc: linux-mtd@lists.infradead.org Subject: Re: JFFS2 & SMP List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Hello, I have two problems with JFFS2 now. The first problem appears if SMP is enabled. I described is in the mtd-list. The second one is the CRC errors. I also mentioned it I've installed 4 variants of the Linux-2.6.8.1 kernel on my i686 test host: 1. SMP, Preemption 2. SMP, No preemption 3. UP, Preemption 4. UP, No preemption I've testes JFFS2 on all these configurations and have observed: The first problem appears only on configurations 1 and 2. The second problem appears only on configuration 1 and 3 The configuration number 4 has no problems. So I may suppose that: 1. The first problem is SMP-related. 2. The second problem is preemption-related. 3. Both problems relate to race conditions. Comments? -- Best Regards, Artem B. Bityuckiy, St.-Petersburg, Russia.