From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 087CDC433EF for ; Fri, 22 Apr 2022 04:23:30 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1443891AbiDVE0R (ORCPT ); Fri, 22 Apr 2022 00:26:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:32804 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352660AbiDVE0Q (ORCPT ); Fri, 22 Apr 2022 00:26:16 -0400 Received: from verein.lst.de (verein.lst.de [213.95.11.211]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1BBB34EDC3; Thu, 21 Apr 2022 21:23:25 -0700 (PDT) Received: by verein.lst.de (Postfix, from userid 2407) id 80F1368B05; Fri, 22 Apr 2022 06:23:19 +0200 (CEST) Date: Fri, 22 Apr 2022 06:23:18 +0200 From: Christoph Hellwig To: Tejun Heo Cc: Christoph Hellwig , Jens Axboe , Paolo Valente , James Smart , Dick Kennedy , linux-block@vger.kernel.org, cgroups@vger.kernel.org, linux-nvme@lists.infradead.org, linux-mm@kvack.org Subject: Re: make the blkcg and blkcg structures private Message-ID: <20220422042318.GA9977@lst.de> References: <20220420042723.1010598-1-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.17 (2007-11-01) Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Apr 21, 2022 at 11:44:43AM -1000, Tejun Heo wrote: > The patches look all good to me and I'm not against making things more > private but can you elaborate on the rationale a bit more? By and large, we > have never been shy about putting things in the headers if there's *any* > (perceived) gain to be made from doing so, or even just as a way to pick the > locations for different things - type defs go on header and so on. Most of > the inlines and [un]likely's that we have are rather silly with modern > compilers with global optimizations, so it does make sense to get tidier, > but if that's the rationale, mentioning that in the commit message, even > briefly, would be great - ie. it should explain the benefits of adding these > few accessors to keep the definition private. Mostly to help me understand the code :) between all the moving to and from the css struture it is a bit of a mess, and limiting the scope that deals with the structures greatly helps with that.