From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S936239AbXGUWQc (ORCPT ); Sat, 21 Jul 2007 18:16:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S964970AbXGUWP7 (ORCPT ); Sat, 21 Jul 2007 18:15:59 -0400 Received: from nigel.suspend2.net ([203.171.70.205]:50746 "EHLO nigel.suspend2.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S964952AbXGUWP5 (ORCPT ); Sat, 21 Jul 2007 18:15:57 -0400 From: Nigel Cunningham Reply-To: nigel@suspend2.net To: Jeremy Maitin-Shepard Subject: Re: [linux-pm] Re: Hibernation considerations Date: Sun, 22 Jul 2007 08:16:02 +1000 User-Agent: KMail/1.9.6 Cc: Miklos Szeredi , rjw@sisk.pl, miltonm@bga.com, stern@rowland.harvard.edu, ying.huang@intel.com, linux-kernel@vger.kernel.org, david@lang.hm, linux-pm@lists.linux-foundation.org References: <200707212243.35602.nigel@nigel.suspend2.net> <87lkd9ohtn.fsf@jbms.ath.cx> In-Reply-To: <87lkd9ohtn.fsf@jbms.ath.cx> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1976347.8yxf0I4N35"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200707220816.03838.nigel@nigel.suspend2.net> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1976347.8yxf0I4N35 Content-Type: text/plain; charset="cp 850" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi. On Sunday 22 July 2007 02:13:56 Jeremy Maitin-Shepard wrote: > It seems that you could still potentially get a failure to freeze if one > FUSE process depends on another, and the one that is frozen second just > happens to be waiting on the one that is frozen first when it is frozen. > I admit that this situation is unlikely, and perhaps acceptable. >=20 > A larger concern is that it seems that freezing FUSE processes at all > _will_ generate deadlocks if a non-synchronous or memory-map-supporting > filesystem is loopback mounted from a FUSE filesystem. In that case, if > you attempt to sync or free memory once FUSE is frozen, you are sure to > get a deadlock. Ok. So then (in response to Alan too), how about keeping a tree of mounts,= =20 akin to the device tree, and working from the deepest nodes up? (In=20 conjunction with what I already suggested)? Regards, Nigel =2D-=20 See http://www.tuxonice.net for Howtos, FAQs, mailing lists, wiki and bugzilla info. --nextPart1976347.8yxf0I4N35 Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) iD8DBQBGooWjN0y+n1M3mo0RAiFrAKDoNHX3OYIQ5oa5oMuyorrITCWFngCgndeJ kW4J4yTjFIdPr+slSiMtIwo= =CQ/Y -----END PGP SIGNATURE----- --nextPart1976347.8yxf0I4N35--