From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Thu, 5 Feb 2004 16:07:55 -0800 From: Andrew Morton Subject: Re: 2.6.2-mm1 aka "Geriatric Wombat" DIO read race still fails Message-Id: <20040205160755.25583627.akpm@osdl.org> In-Reply-To: <1076023899.7182.97.camel@ibm-c.pdx.osdl.net> References: <20040205014405.5a2cf529.akpm@osdl.org> <1076023899.7182.97.camel@ibm-c.pdx.osdl.net> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Daniel McNeil Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-aio@kvack.org List-ID: Daniel McNeil wrote: > > Andrew, > > I tested 2.6.2-mm1 on an 8-proc running 6 copies of the read_under > test and all 6 read_under tests saw uninitialized data in less than 5 > minutes. :( The performance implications of synchronising behind kjournald writes for normal non-blocking writeback are bad. Can you detail what you now think is the failure mechanism? -- 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: aart@kvack.org