Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757027Ab2BHAOI (ORCPT ); Tue, 7 Feb 2012 19:14:08 -0500 Received: from lxorguk.ukuu.org.uk ([81.2.110.251]:56996 "EHLO lxorguk.ukuu.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756144Ab2BHAOF (ORCPT ); Tue, 7 Feb 2012 19:14:05 -0500 Date: Wed, 8 Feb 2012 00:15:19 +0000 From: Alan Cox To: Anton Altaparmakov Cc: Linus Torvalds , Andrew Morton , Christoph Hellwig , Szabolcs Szakacsits , Janne =?ISO-8859-1?B?S2FsbGlvbeRr?= =?ISO-8859-1?B?aQ==?= , LKML , linux-fsdevel Subject: Re: Direct i/o changes break all non-GPL file systems Message-ID: <20120208001519.501b6fea@pyramind.ukuu.org.uk> In-Reply-To: <92291682-5422-4AE2-9608-97775603E7FD@tuxera.com> References: <92291682-5422-4AE2-9608-97775603E7FD@tuxera.com> X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.8; x86_64-redhat-linux-gnu) Face: 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 Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1396 Lines: 27 On Wed, 8 Feb 2012 00:07:15 +0000 Anton Altaparmakov wrote: > Hi Linus, Andrew, Christoph, > > With kernel 3.1, Christoph removed i_alloc_sem and replaced it with calls (namely inode_dio_wait() and inode_dio_done()) which are EXPORT_SYMBOL_GPL() thus they cannot be used by non-GPL file systems and further inode_dio_wait() was pushed from notify_change() into the file system ->setattr() method but no non-GPL file system can make this call. I'm advised by my lawyer that when this occurs that I should always inform the other party the following "For a Linux kernel containing any code I own the code is under the GNU public license v2 (in some cases or later), I have never given permission for that code to be used as part of a combined or derivative work which contains binary chunks. I have never said that modules are somehow magically outside the GPL and I am doubtful that in most cases a work containing binary modules for a Linux kernel is compatible with the licensing, although I accept there may be some cases that it is." So unless your code is remarkably non-derivative I don't see that anything has changed. -- 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/