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 X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 39B91C433ED for ; Thu, 20 May 2021 13:41:33 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 1E54560FE4 for ; Thu, 20 May 2021 13:41:33 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237916AbhETNmu (ORCPT ); Thu, 20 May 2021 09:42:50 -0400 Received: from szxga04-in.huawei.com ([45.249.212.190]:4703 "EHLO szxga04-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235618AbhETNm2 (ORCPT ); Thu, 20 May 2021 09:42:28 -0400 Received: from dggems701-chm.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4Fm9mW4VLFz16Pn0; Thu, 20 May 2021 21:38:19 +0800 (CST) Received: from dggeme703-chm.china.huawei.com (10.1.199.99) by dggems701-chm.china.huawei.com (10.3.19.178) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.1.2176.2; Thu, 20 May 2021 21:41:06 +0800 Received: from huawei.com (10.175.104.170) by dggeme703-chm.china.huawei.com (10.1.199.99) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.2176.2; Thu, 20 May 2021 21:41:06 +0800 From: Miaohe Lin To: CC: , , , Subject: [PATCH v2 4/4] mm/swap: remove unused global variable nr_swapper_spaces Date: Thu, 20 May 2021 21:40:22 +0800 Message-ID: <20210520134022.1370406-5-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20210520134022.1370406-1-linmiaohe@huawei.com> References: <20210520134022.1370406-1-linmiaohe@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.104.170] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggeme703-chm.china.huawei.com (10.1.199.99) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Since commit b6038942480e ("mm: memcg: add swapcache stat for memcg v2"), the last user of nr_swapper_spaces is gone. So we remove this unused one. Signed-off-by: Miaohe Lin --- mm/swap_state.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/mm/swap_state.c b/mm/swap_state.c index 1a2ba4056f37..b5a3dc8f47a1 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -37,7 +37,6 @@ static const struct address_space_operations swap_aops = { }; struct address_space *swapper_spaces[MAX_SWAPFILES] __read_mostly; -static unsigned int nr_swapper_spaces[MAX_SWAPFILES] __read_mostly; static bool enable_vma_readahead __read_mostly = true; #define SWAP_RA_WIN_SHIFT (PAGE_SHIFT / 2) @@ -685,7 +684,6 @@ int init_swap_address_space(unsigned int type, unsigned long nr_pages) /* swap cache doesn't use writeback related tags */ mapping_set_no_writeback_tags(space); } - nr_swapper_spaces[type] = nr; swapper_spaces[type] = spaces; return 0; @@ -694,7 +692,6 @@ int init_swap_address_space(unsigned int type, unsigned long nr_pages) void exit_swap_address_space(unsigned int type) { kvfree(swapper_spaces[type]); - nr_swapper_spaces[type] = 0; swapper_spaces[type] = NULL; } -- 2.23.0