Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754814AbdC2JJD (ORCPT ); Wed, 29 Mar 2017 05:09:03 -0400 Received: from merlin.infradead.org ([205.233.59.134]:60830 "EHLO merlin.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752763AbdC2JJC (ORCPT ); Wed, 29 Mar 2017 05:09:02 -0400 Date: Wed, 29 Mar 2017 11:08:52 +0200 From: Peter Zijlstra To: Davidlohr Bueso Cc: mingo@kernel.org, akpm@linux-foundation.org, jack@suse.cz, kirill.shutemov@linux.intel.com, mhocko@suse.com, mgorman@techsingularity.net, linux-kernel@vger.kernel.org, Davidlohr Bueso Subject: Re: [PATCH 1/5] locking: Introduce range reader/writer lock Message-ID: <20170329090852.lcc2viof7stxf7y6@hirez.programming.kicks-ass.net> References: <1488863010-13028-1-git-send-email-dave@stgolabs.net> <1488863010-13028-2-git-send-email-dave@stgolabs.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1488863010-13028-2-git-send-email-dave@stgolabs.net> User-Agent: NeoMutt/20170113 (1.7.2) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 466 Lines: 13 On Mon, Mar 06, 2017 at 09:03:26PM -0800, Davidlohr Bueso wrote: > +#define RANGE_RWLOCK_INFINITY (~0UL - 1) > +#define DEFINE_RANGE_RWLOCK_INF(name) \ > + struct range_rwlock name = __RANGE_RWLOCK_INITIALIZER(0, RANGE_RWLOCK_INFINITY) > +void range_rwlock_init_inf(struct range_rwlock *lock); Ayes I'm a pendant, but that's a very small infinity. I always thought infinity wasn't enumerable. Can we think of a different name here? 'whole' / 'all' / 'full' ?