From mboxrd@z Thu Jan 1 00:00:00 1970 From: Eric Dumazet Subject: [PATCH] net: wrong test in inet_ehash_locks_alloc() Date: Tue, 27 Jan 2009 15:42:14 +0100 Message-ID: <497F1D46.70103@cosmosbay.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: Linux Netdev List To: "David S. Miller" Return-path: Received: from gw1.cosmosbay.com ([212.99.114.194]:60236 "EHLO gw1.cosmosbay.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751443AbZA0OmW (ORCPT ); Tue, 27 Jan 2009 09:42:22 -0500 Sender: netdev-owner@vger.kernel.org List-ID: In commit 9db66bdcc83749affe61c61eb8ff3cf08f42afec (net: convert TCP/DCCP ehash rwlocks to spinlocks), I forgot to change one occurrence of rwlock_t to spinlock_t I believe sizeof(raw_spinlock_t) might be > 0 on !CONFIG_SMP if CONFIG_DEBUG_SPINLOCK while sizeof(raw_rwlock_t) should be 0 in this case. Fortunatly, CONFIG_DEBUG_SPINLOCK adds fields to both spinlock_t and rwlock_t, but at this might change in the future (being able to debug spinlocks but not rwlocks for example), better to be safe. Signed-off-by: Eric Dumazet diff --git a/include/net/inet_hashtables.h b/include/net/inet_hashtables.h index f44bb5c..d0a0431 100644 --- a/include/net/inet_hashtables.h +++ b/include/net/inet_hashtables.h @@ -182,7 +182,7 @@ static inline int inet_ehash_locks_alloc(struct inet_hashinfo *hashinfo) size = 2048; if (nr_pcpus >= 32) size = 4096; - if (sizeof(rwlock_t) != 0) { + if (sizeof(spinlock_t) != 0) { #ifdef CONFIG_NUMA if (size * sizeof(spinlock_t) > PAGE_SIZE) hashinfo->ehash_locks = vmalloc(size * sizeof(spinlock_t));