From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262905AbUHBUJN (ORCPT ); Mon, 2 Aug 2004 16:09:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262906AbUHBUJN (ORCPT ); Mon, 2 Aug 2004 16:09:13 -0400 Received: from mx1.redhat.com ([66.187.233.31]:50614 "EHLO mx1.redhat.com") by vger.kernel.org with ESMTP id S262905AbUHBUJJ (ORCPT ); Mon, 2 Aug 2004 16:09:09 -0400 Date: Mon, 2 Aug 2004 13:07:29 -0700 From: "David S. Miller" To: viro@parcelfarce.linux.theplanet.co.uk Cc: kiran@in.ibm.com, akpm@osdl.org, linux-kernel@vger.kernel.org, greg@kroah.com, dipankar@in.ibm.com Subject: Re: [patchset] Lockfree fd lookup 0 of 5 Message-Id: <20040802130729.2dae8fd5.davem@redhat.com> In-Reply-To: <20040802165607.GN12308@parcelfarce.linux.theplanet.co.uk> References: <20040802101053.GB4385@vitalstatistix.in.ibm.com> <20040802165607.GN12308@parcelfarce.linux.theplanet.co.uk> X-Mailer: Sylpheed version 0.9.12 (GTK+ 1.2.10; sparc-unknown-linux-gnu) X-Face: "_;p5u5aPsO,_Vsx"^v-pEq09'CU4&Dc1$fQExov$62l60cgCc%FnIwD=.UF^a>?5'9Kn[;433QFVV9M..2eN.@4ZWPGbdi<=?[:T>y?SD(R*-3It"Vj:)"dP Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Mon, 2 Aug 2004 17:56:07 +0100 viro@parcelfarce.linux.theplanet.co.uk wrote: > How about this for comparison? That's just a dumb "convert to rwlock" > patch; we can be smarter in e.g. close_on_exec handling, but that's a > separate story. Compares to plain spinlocks, rwlock's don't buy you much, if anything, these days. Especially for short sequences of code.