From: Theodore Tso Subject: Re: [PATCH 3/3] Add timeout feature Date: Wed, 9 Jul 2008 08:24:01 -0400 Message-ID: <20080709122401.GK9957@mit.edu> References: <20080709010922.GE9957@mit.edu> <20080709061621.GA5260@infradead.org> <20080708234120.5072111f@infradead.org> <20080708235502.1c52a586@infradead.org> <20080709071346.GS11558@disturbed> <20080709110900.GI9957@mit.edu> <20080709114958.GV11558@disturbed> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii To: Arjan van de Ven , Miklos Szeredi , hch@infradead.org, pavel@suse.cz, t-sato@yk.jp.nec.com, akpm@linux-foundation.org, viro@ZenIV.linux.org.uk, Return-path: Received: from www.church-of-our-saviour.org ([69.25.196.31]:60424 "EHLO thunker.thunk.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1752085AbYGIMY7 (ORCPT ); Wed, 9 Jul 2008 08:24:59 -0400 Content-Disposition: inline In-Reply-To: <20080709114958.GV11558@disturbed> Sender: linux-ext4-owner@vger.kernel.org List-ID: On Wed, Jul 09, 2008 at 09:49:58PM +1000, Dave Chinner wrote: > (e) none of the above. The kernel compilation will appear to pause > until the filesystem is unfrozen. No other visible effect should > occur. It will get blocked in a write or filesystem transaction > because the fs is frozen. So if the process which froze the filesystem accidentally tries writing to a log file (or database file containing the backup information, or whatever) that happens to be on the filesystem that is frozen, that process will get blocked and you end up in a deadlock; did I get that right? - Ted