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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FDAFC25B0E for ; Fri, 19 Aug 2022 03:28:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1345184AbiHSD25 (ORCPT ); Thu, 18 Aug 2022 23:28:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39952 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1344915AbiHSD2l (ORCPT ); Thu, 18 Aug 2022 23:28:41 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BE08CEE2C for ; Thu, 18 Aug 2022 20:28:35 -0700 (PDT) Received: from dggpemm500022.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4M86bw2K4lznTcd; Fri, 19 Aug 2022 11:26:20 +0800 (CST) Received: from dggpemm500001.china.huawei.com (7.185.36.107) by dggpemm500022.china.huawei.com (7.185.36.162) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 19 Aug 2022 11:28:33 +0800 Received: from localhost.localdomain.localdomain (10.175.113.25) by dggpemm500001.china.huawei.com (7.185.36.107) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2375.24; Fri, 19 Aug 2022 11:28:33 +0800 From: Kefeng Wang To: Naoya Horiguchi , Miaohe Lin , Andrew Morton CC: , , Kefeng Wang Subject: [PATCH 2/2] mm: memory-failure: kill __soft_offline_page() Date: Fri, 19 Aug 2022 11:34:02 +0800 Message-ID: <20220819033402.156519-2-wangkefeng.wang@huawei.com> X-Mailer: git-send-email 2.35.3 In-Reply-To: <20220819033402.156519-1-wangkefeng.wang@huawei.com> References: <20220819033402.156519-1-wangkefeng.wang@huawei.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII X-Originating-IP: [10.175.113.25] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To dggpemm500001.china.huawei.com (7.185.36.107) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Squash the __soft_offline_page() into soft_offline_in_use_page() and kill __soft_offline_page(). Signed-off-by: Kefeng Wang --- mm/memory-failure.c | 24 +++++++++--------------- 1 file changed, 9 insertions(+), 15 deletions(-) diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 1a7d6548ccb2..5b368124956d 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -2432,11 +2432,11 @@ static bool isolate_page(struct page *page, struct list_head *pagelist) } /* - * __soft_offline_page handles hugetlb-pages and non-hugetlb pages. + * soft_offline_in_use_page handles hugetlb-pages and non-hugetlb pages. * If the page is a non-dirty unmapped page-cache page, it simply invalidates. * If the page is mapped, it migrates the contents over. */ -static int __soft_offline_page(struct page *page) +static int soft_offline_in_use_page(struct page *page) { long ret = 0; unsigned long pfn = page_to_pfn(page); @@ -2449,6 +2449,13 @@ static int __soft_offline_page(struct page *page) .gfp_mask = GFP_USER | __GFP_MOVABLE | __GFP_RETRY_MAYFAIL, }; + if (!huge && PageTransHuge(hpage)) { + if (try_to_split_thp_page(page)) { + pr_info("soft offline: %#lx: thp split failed\n", pfn); + return -EBUSY; + } + } + lock_page(page); if (!PageHuge(page)) wait_on_page_writeback(page); @@ -2498,19 +2505,6 @@ static int __soft_offline_page(struct page *page) return ret; } -static int soft_offline_in_use_page(struct page *page) -{ - struct page *hpage = compound_head(page); - - if (!PageHuge(page) && PageTransHuge(hpage)) - if (try_to_split_thp_page(page) < 0) { - pr_info("soft offline: %#lx: thp split failed\n", - page_to_pfn(page)); - return -EBUSY; - } - return __soft_offline_page(page); -} - static void put_ref_page(struct page *page) { if (page) -- 2.35.3