Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754053Ab1C1O67 (ORCPT ); Mon, 28 Mar 2011 10:58:59 -0400 Received: from mx5.twosigma.com ([208.77.212.35]:59492 "EHLO mx5.twosigma.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752206Ab1C1O66 convert rfc822-to-8bit (ORCPT ); Mon, 28 Mar 2011 10:58:58 -0400 From: Sean Noonan To: "'Michel Lespinasse'" , Christoph Hellwig CC: "linux-kernel@vger.kernel.org" , Martin Bligh , Trammell Hudson , Christos Zoulas , "linux-xfs@oss.sgi.com" , Stephen Degler , "linux-mm@kvack.org" Date: Mon, 28 Mar 2011 10:58:53 -0400 Subject: RE: XFS memory allocation deadlock in 2.6.38 Thread-Topic: XFS memory allocation deadlock in 2.6.38 Thread-Index: AcvqfZivehhF+3ElQ0WLyr/42LSzHwC2ut6w Message-ID: <081DDE43F61F3D43929A181B477DCA95639B5349@MSXAOA6.twosigma.com> References: <081DDE43F61F3D43929A181B477DCA95639B52FD@MSXAOA6.twosigma.com> <081DDE43F61F3D43929A181B477DCA95639B5327@MSXAOA6.twosigma.com> <20110324174311.GA31576@infradead.org> In-Reply-To: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 688 Lines: 15 > Regarding the deadlock: I am curious to see if it could be made to > happen before 5ecfda041e4b4bd858d25bbf5a16c2a6c06d7272. Could you test > what happens if you remove the MAP_POPULATE flag from your mmap call, > and instead read all pages from userspace right after the mmap ? I > expect you would then be able to trigger the deadlock before > 5ecfda041e4b4bd858d25bbf5a16c2a6c06d7272. I still see the deadlock without MAP_POPULATE Sean -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/