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 EC23CC433EF for ; Fri, 17 Jun 2022 19:04:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233728AbiFQTEg (ORCPT ); Fri, 17 Jun 2022 15:04:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52150 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229693AbiFQTEe (ORCPT ); Fri, 17 Jun 2022 15:04:34 -0400 Received: from desiato.infradead.org (desiato.infradead.org [IPv6:2001:8b0:10b:1:d65d:64ff:fe57:4e05]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 01BDA41996 for ; Fri, 17 Jun 2022 12:04:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=desiato.20200630; h=In-Reply-To:Content-Type:MIME-Version: References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description; bh=5vYR7KSYeCrksqMEKKx6lAlNtUm65l3b2zgw5cBNVZY=; b=GmKG+czD9r+6YuXcOU0eGuv1mB bLV85SBAhzlxA68vumtThkIlv1ePcziOiXnzHAdxepI+RLkQk9w2XGgcn3GTfb7ZYkzLd4Dq8mb6S mOt6F67sMH9VKDc3ygsoKqZ5S2YjX9x/0lgsFa3xYCkzRAqYk4S4x92j3YO/NtakgEb2FNUbWJox4 UaneyR3WbamjxPv7mKkMvi6shrVruBe0iUJYncdJxDTzxL8TaC9WsSxH/QsgF7DVVIpuBLU0eZmpf k9UxA7aok0jv9QVgUMM9F02u8xFe+E/+oxQZXH9KeSDecOQq5N33wsXWu0iBx9Ie2OqUtmMmr2spo FocKJ+uA==; Received: from dhcp-077-249-017-003.chello.nl ([77.249.17.3] helo=noisy.programming.kicks-ass.net) by desiato.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1o2HGM-008l30-Dp; Fri, 17 Jun 2022 19:04:10 +0000 Received: from hirez.programming.kicks-ass.net (hirez.programming.kicks-ass.net [192.168.1.225]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by noisy.programming.kicks-ass.net (Postfix) with ESMTPS id 29A36300212; Fri, 17 Jun 2022 21:04:08 +0200 (CEST) Received: by hirez.programming.kicks-ass.net (Postfix, from userid 1000) id 10E9F2020B7B6; Fri, 17 Jun 2022 21:04:08 +0200 (CEST) Date: Fri, 17 Jun 2022 21:04:08 +0200 From: Peter Zijlstra To: Eric Dumazet Cc: Waiman Long , Shakeel Butt , Eric Dumazet , Linus Torvalds , linux-kernel , Ingo Molnar , Boqun Feng , Will Deacon , Roman Penyaev Subject: Re: [PATCH] locking/rwlocks: do not starve writers Message-ID: References: <20220617091039.2257083-1-eric.dumazet@gmail.com> <2dd754f9-3a79-ed17-e423-6b411c3afb69@redhat.com> <2730b855-8f99-5a9e-707e-697d3bd9811d@redhat.com> <7499dd05-30d1-669c-66b4-5cb06452b476@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 17, 2022 at 07:45:14PM +0200, Eric Dumazet wrote: > Were rwlocks always unfair, and we have been lucky ? Yes.