From patchwork Thu May 20 13:40:22 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaohe Lin X-Patchwork-Id: 12270291 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 2E09BC43461 for ; Thu, 20 May 2021 13:41:15 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D199660FE6 for ; Thu, 20 May 2021 13:41:14 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D199660FE6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id A12BA8E0006; Thu, 20 May 2021 09:41:10 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 9870F8E0013; Thu, 20 May 2021 09:41:10 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6A1598E0010; Thu, 20 May 2021 09:41:10 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0018.hostedemail.com [216.40.44.18]) by kanga.kvack.org (Postfix) with ESMTP id 0D55E8E0006 for ; Thu, 20 May 2021 09:41:10 -0400 (EDT) Received: from smtpin29.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay04.hostedemail.com (Postfix) with ESMTP id 8D8D18778 for ; Thu, 20 May 2021 13:41:09 +0000 (UTC) X-FDA: 78161720658.29.D4135C7 Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by imf14.hostedemail.com (Postfix) with ESMTP id B8799C0007E8 for ; Thu, 20 May 2021 13:41:06 +0000 (UTC) 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 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 X-Rspamd-Queue-Id: B8799C0007E8 Authentication-Results: imf14.hostedemail.com; dkim=none; dmarc=pass (policy=none) header.from=huawei.com; spf=pass (imf14.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.190 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com X-Rspamd-Server: rspam04 X-Stat-Signature: xpnhod1483tjbqg6yynu3m7i9br3p3gb X-HE-Tag: 1621518066-525752 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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; }