From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932433AbWGYEcp (ORCPT ); Tue, 25 Jul 2006 00:32:45 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932435AbWGYEcp (ORCPT ); Tue, 25 Jul 2006 00:32:45 -0400 Received: from omx2-ext.sgi.com ([192.48.171.19]:4793 "EHLO omx2.sgi.com") by vger.kernel.org with ESMTP id S932433AbWGYEco (ORCPT ); Tue, 25 Jul 2006 00:32:44 -0400 Subject: Re: [NFS] [PATCH 002 of 9] knfsd: knfsd: Remove an unused variable from e_show(). From: Greg Banks To: Neil Brown Cc: Josef Sipek , Andrew Morton , Linux NFS Mailing List , Linux Kernel Mailing List In-Reply-To: <17605.39934.963857.665398@cse.unsw.edu.au> References: <20060725114207.21779.patches@notabene> <1060725015432.21921@suse.de> <20060725041059.GA13294@filer.fsl.cs.sunysb.edu> <17605.39934.963857.665398@cse.unsw.edu.au> Content-Type: text/plain Organization: Silicon Graphics Inc, Australian Software Group. Message-Id: <1153801950.1547.657.camel@hole.melbourne.sgi.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6-1mdk Date: Tue, 25 Jul 2006 14:32:30 +1000 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Tue, 2006-07-25 at 14:20, Neil Brown wrote: > On Tuesday July 25, jsipek@fsl.cs.sunysb.edu wrote: > > On Tue, Jul 25, 2006 at 11:54:32AM +1000, NeilBrown wrote: > > ... > > Probably. We just need a pointer value that is definitely not a > pointer to a valid cache_head object, and is not NULL. > (void*)1 seems a reasonable choice, but maybe #defineing something > would help. > > Patches welcome. This trivial patch compiles. -- knfsd: Use SEQ_START_TOKEN instead of hardcoded magic (void*)1. Signed-off-by: Greg Banks --- fs/nfsd/export.c | 6 +++--- 1 files changed, 3 insertions(+), 3 deletions(-) Index: linux/fs/nfsd/export.c =================================================================== --- linux.orig/fs/nfsd/export.c 2006-07-25 14:28:03.000000000 +1000 +++ linux/fs/nfsd/export.c 2006-07-25 14:29:14.526574385 +1000 @@ -1086,7 +1086,7 @@ static void *e_start(struct seq_file *m, exp_readlock(); read_lock(&svc_export_cache.hash_lock); if (!n--) - return (void*)1; + return SEQ_START_TOKEN; hash = n >> 32; export = n & ((1LL<<32) - 1); @@ -1110,7 +1110,7 @@ static void *e_next(struct seq_file *m, struct cache_head *ch = p; int hash = (*pos >> 32); - if (p == (void*)1) + if (p == SEQ_START_TOKEN) hash = 0; else if (ch->next == NULL) { hash++; @@ -1180,7 +1180,7 @@ static int e_show(struct seq_file *m, vo struct svc_export *exp = container_of(cp, struct svc_export, h); svc_client *clp; - if (p == (void*)1) { + if (p == SEQ_START_TOKEN) { seq_puts(m, "# Version 1.1\n"); seq_puts(m, "# Path Client(Flags) # IPs\n"); return 0; Greg. -- Greg Banks, R&D Software Engineer, SGI Australian Software Group. I don't speak for SGI.