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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7EF6DC433F5 for ; Wed, 6 Oct 2021 15:21:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5B15B60F41 for ; Wed, 6 Oct 2021 15:21:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239249AbhJFPXo (ORCPT ); Wed, 6 Oct 2021 11:23:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50234 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239167AbhJFPXm (ORCPT ); Wed, 6 Oct 2021 11:23:42 -0400 Received: from mail-ed1-x534.google.com (mail-ed1-x534.google.com [IPv6:2a00:1450:4864:20::534]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 6B6E1C061746 for ; Wed, 6 Oct 2021 08:21:50 -0700 (PDT) Received: by mail-ed1-x534.google.com with SMTP id f4so6094487edr.8 for ; Wed, 06 Oct 2021 08:21:50 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=from:to:cc:subject:date:message-id; bh=P0tGE7p+AV7X8vAEgZS8QLZhRwDjoxzZkIbnWYUcb+8=; b=Q1VNpyrz7YgVOjlS1ERSx+BHl1g1JH8SHRb1cbUFTQQMgiP6Vb25CDn1MzdqvF2ujs a1nYtU1RPBrj0Sj2osWRA0aZ26H2kUsixiSmdfGIDJvR2RBzanHUhT/+pWUmWRa5lCJ+ SLkccr41YtByBWtd762q6lywmOxom/ajQb/jGFsZuG361IlUm7yWBqXkO3pzzubI/Stl GJQ2gUT+34NatL8sP3gJ4Xe/FIfN7WdpbHacP1AGb+Z2HsInbN7qszjceePCWlbAUKmH 0GRYjWEgTbKUTgycdkwKVQWMToPnvEoCJnHPonDSj2y2S0guJY7FmlCvO8XLCZpO0GBH vWCQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id; bh=P0tGE7p+AV7X8vAEgZS8QLZhRwDjoxzZkIbnWYUcb+8=; b=JTTen2W3ruwWpg32e6vWm8BshE4HqzrsbBh9BoVgloJIngcSP20JzINCecvj2ym605 3c6ezNIjnBBDF99YdtuzP9dlhlaRP5ewTMJrgnYjwWrKTNt6ZX1AKGM3BziOpE0rFmCT 4IYc02y5lY4LKpfUgSQ3kBw/Zwvxr3eZD644r0Q+FLLwODDJZcMn79y0PbpWgXb/lgy1 WGYRJdnkVQ5Mf/P+/Jy+wrI4kuM8TQc2lsza7M/H3xgkCx89wPHlU6nQg9NxAesJ4Spp aR2A0DTlVn/CYkub2UiXh8kYcvdmjpqOD8lXaFUesIZ1OKfjcJY1AM//Ji4d8RjnfMnM Q6wg== X-Gm-Message-State: AOAM532XdaY9c9U1fU423Z1THnWoAzFVB0qeiN7VoyeKObwi9B2Rz494 art3CSbVR2chnMAwjE+b/HE= X-Google-Smtp-Source: ABdhPJxC+b3Q3j5vWHfm+9wcv+OaxmWfI2GGp20dqgF4eLY47sPJmgOLaJoMA6fjK1bs/gJcLPp1og== X-Received: by 2002:a17:906:1146:: with SMTP id i6mr33232322eja.12.1633533685876; Wed, 06 Oct 2021 08:21:25 -0700 (PDT) Received: from localhost ([185.92.221.13]) by smtp.gmail.com with ESMTPSA id z4sm1500764ejw.46.2021.10.06.08.21.25 (version=TLS1_2 cipher=ECDHE-ECDSA-CHACHA20-POLY1305 bits=256/256); Wed, 06 Oct 2021 08:21:25 -0700 (PDT) From: Wei Yang To: kuba@kernel.org, gregkh@linuxfoundation.org, neilb@suse.com, mojha@codeaurora.org, jkosina@suse.cz Cc: linux-kernel@vger.kernel.org, Wei Yang Subject: [PATCH] hashtable: remove a redundant check in hash_for_each_xxx() Date: Wed, 6 Oct 2021 15:21:00 +0000 Message-Id: <20211006152100.17795-1-richard.weiyang@gmail.com> X-Mailer: git-send-email 2.11.0 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The three hash_for_each_xxx() helper iterate the hash table with help of hlist_for_each_entry_xxx(), which breaks the loop only when obj is NULL. This means the check during each iteration is redundant. This patch removes it. Signed-off-by: Wei Yang --- include/linux/hashtable.h | 9 +++------ 1 file changed, 3 insertions(+), 6 deletions(-) diff --git a/include/linux/hashtable.h b/include/linux/hashtable.h index f6c666730b8c..a15719ed303f 100644 --- a/include/linux/hashtable.h +++ b/include/linux/hashtable.h @@ -124,8 +124,7 @@ static inline void hash_del_rcu(struct hlist_node *node) * @member: the name of the hlist_node within the struct */ #define hash_for_each(name, bkt, obj, member) \ - for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ - (bkt)++)\ + for ((bkt) = 0, obj = NULL; (bkt) < HASH_SIZE(name); (bkt)++) \ hlist_for_each_entry(obj, &name[bkt], member) /** @@ -136,8 +135,7 @@ static inline void hash_del_rcu(struct hlist_node *node) * @member: the name of the hlist_node within the struct */ #define hash_for_each_rcu(name, bkt, obj, member) \ - for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ - (bkt)++)\ + for ((bkt) = 0, obj = NULL; (bkt) < HASH_SIZE(name); (bkt)++) \ hlist_for_each_entry_rcu(obj, &name[bkt], member) /** @@ -150,8 +148,7 @@ static inline void hash_del_rcu(struct hlist_node *node) * @member: the name of the hlist_node within the struct */ #define hash_for_each_safe(name, bkt, tmp, obj, member) \ - for ((bkt) = 0, obj = NULL; obj == NULL && (bkt) < HASH_SIZE(name);\ - (bkt)++)\ + for ((bkt) = 0, obj = NULL; (bkt) < HASH_SIZE(name); (bkt)++) \ hlist_for_each_entry_safe(obj, tmp, &name[bkt], member) /** -- 2.23.0