From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id 8D7B68D0040 for ; Mon, 28 Mar 2011 10:58:57 -0400 (EDT) From: Sean Noonan Date: Mon, 28 Mar 2011 10:58:53 -0400 Subject: RE: XFS memory allocation deadlock in 2.6.38 Message-ID: <081DDE43F61F3D43929A181B477DCA95639B5349@MSXAOA6.twosigma.com> References: <081DDE43F61F3D43929A181B477DCA95639B52FD@MSXAOA6.twosigma.com> <081DDE43F61F3D43929A181B477DCA95639B5327@MSXAOA6.twosigma.com> <20110324174311.GA31576@infradead.org> In-Reply-To: Content-Language: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: owner-linux-mm@kvack.org List-ID: 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" > 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, 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org