Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756962AbZIKVvY (ORCPT ); Fri, 11 Sep 2009 17:51:24 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756406AbZIKVvX (ORCPT ); Fri, 11 Sep 2009 17:51:23 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:49481 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755992AbZIKVvW (ORCPT ); Fri, 11 Sep 2009 17:51:22 -0400 Date: Fri, 11 Sep 2009 23:51:17 +0200 From: Pavel Machek To: Zdenek Kabelac Cc: OGAWA Hirofumi , Christoph Hellwig , "Rafael J. Wysocki" , Linux Kernel Mailing List , linux-mmc@vger.kernel.org, viro@zeniv.linux.org.uk Subject: Re: Regression in suspend to ram in 2.6.31-rc kernels Message-ID: <20090911215117.GA11441@elf.ucw.cz> References: <87iqfx5mss.fsf@devron.myhome.or.jp> <20090907125130.GA1595@ucw.cz> <87ljko5k3v.fsf@devron.myhome.or.jp> <20090910192354.GD23356@elf.ucw.cz> <87bplim1ce.fsf@devron.myhome.or.jp> <20090911200922.GF8137@elf.ucw.cz> <20090911213204.GC25544@elf.ucw.cz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Warning: Reading this can be dangerous to your mental health. User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1373 Lines: 37 On Fri 2009-09-11 23:45:01, Zdenek Kabelac wrote: > 2009/9/11 Pavel Machek : > > > >> And why suspend of mmc should generate card removal ?? > > > > Card is powered down during suspend -> mmc can't guarantee the card is > > same and unchanged -> it makes some sense to simulate > > removal/reinsert. > > But how is this going to work when I keep the device mounted and > blockdev is basically destroyed - what if I'm reading file from card > during suspend ? "Don't do it". > >> if I suspend and resume my laptop and I keep the card inside - all > >> those step looks plain wrong. > > > > Unfortunately system can't tell. > > Well system could check basic card ids if they match after resume - if > some users wants to crash his card by randomly swapping it during > suspend/resume - I'd have no problem with that.... Well, I do have small problem with that :-). Anyway, patch for rechecking IDs would probably be accepted, but that's not how it works now. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/