Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932121AbZINPCD (ORCPT ); Mon, 14 Sep 2009 11:02:03 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932076AbZINPB7 (ORCPT ); Mon, 14 Sep 2009 11:01:59 -0400 Received: from mga02.intel.com ([134.134.136.20]:17748 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932078AbZINPB5 convert rfc822-to-8bit (ORCPT ); Mon, 14 Sep 2009 11:01:57 -0400 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.44,383,1249282800"; d="scan'208";a="448323595" From: "Sosnowski, Maciej" To: "Williams, Dan J" CC: "linux-kernel@vger.kernel.org" , "linux-raid@vger.kernel.org" , "netdev@vger.kernel.org" Date: Mon, 14 Sep 2009 16:01:58 +0100 Subject: RE: [PATCH 28/29] dmaengine: kill tx_list Thread-Topic: [PATCH 28/29] dmaengine: kill tx_list Thread-Index: AcotCAFR28veFN5WShiRcdNSjWa5gwIREPMQ Message-ID: <129600E5E5FB004392DDC3FB599660D7B554819A@irsmsx504.ger.corp.intel.com> References: <20090904022733.32667.77626.stgit@dwillia2-linux.ch.intel.com> <20090904023252.32667.51136.stgit@dwillia2-linux.ch.intel.com> In-Reply-To: <20090904023252.32667.51136.stgit@dwillia2-linux.ch.intel.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: en-US Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 8BIT MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 767 Lines: 16 Williams, Dan J wrote: > The tx_list attribute of struct dma_async_tx_descriptor is common to > most, but not all dma driver implementations. None of the upper level > code (dmaengine/async_tx) uses it, so allow drivers to implement it > locally if they need it. This saves sizeof(struct list_head) bytes for > drivers that do not manage descriptors with a linked list (e.g.: ioatdma > v2,3). > > Signed-off-by: Dan Williams > --- Signed-off-by: Maciej Sosnowski -- 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/