From nobody Sat Jun 27 23:18:46 2026 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 5B8DDC433F5 for ; Fri, 18 Feb 2022 09:21:46 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233466AbiBRJWA (ORCPT ); Fri, 18 Feb 2022 04:22:00 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:54128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233265AbiBRJVy (ORCPT ); Fri, 18 Feb 2022 04:21:54 -0500 Received: from szxga03-in.huawei.com (szxga03-in.huawei.com [45.249.212.189]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1CD4524BC6 for ; Fri, 18 Feb 2022 01:21:36 -0800 (PST) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.57]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4K0R1x48CCz8wmw; Fri, 18 Feb 2022 17:18:13 +0800 (CST) Received: from huawei.com (10.175.124.27) by canpemm500002.china.huawei.com (7.192.104.244) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.21; Fri, 18 Feb 2022 17:21:34 +0800 From: Miaohe Lin To: , CC: , , Subject: [PATCH] mm/hwpoison-inject: support injecting hwpoison to free page Date: Fri, 18 Feb 2022 17:20:52 +0800 Message-ID: <20220218092052.3853-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" memory_failure() can handle free buddy page. Support injecting hwpoison to free page by adding is_free_buddy_page check when hwpoison filter is disabled. Signed-off-by: Miaohe Lin --- mm/hwpoison-inject.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c index aff4d27ec235..f74552977649 100644 --- a/mm/hwpoison-inject.c +++ b/mm/hwpoison-inject.c @@ -32,9 +32,9 @@ static int hwpoison_inject(void *data, u64 val) =20 shake_page(hpage); /* - * This implies unable to support non-LRU pages. + * This implies unable to support non-LRU pages except free page. */ - if (!PageLRU(hpage) && !PageHuge(p)) + if (!PageLRU(hpage) && !PageHuge(p) && !is_free_buddy_page(p)) return 0; =20 /* --=20 2.23.0