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 BF35FC433F5 for ; Wed, 25 May 2022 08:18:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234746AbiEYIS0 (ORCPT ); Wed, 25 May 2022 04:18:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52056 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232404AbiEYISQ (ORCPT ); Wed, 25 May 2022 04:18:16 -0400 Received: from szxga02-in.huawei.com (szxga02-in.huawei.com [45.249.212.188]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B8A91F67 for ; Wed, 25 May 2022 01:18:14 -0700 (PDT) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.55]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4L7P4w3tGnzQkNZ; Wed, 25 May 2022 16:15:12 +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 15.1.2375.24; Wed, 25 May 2022 16:18:12 +0800 From: Miaohe Lin To: , , CC: , , , , , , , , , , Subject: [PATCH v3 0/4] A few cleanup and fixup patches for migration Date: Wed, 25 May 2022 16:18:18 +0800 Message-ID: <20220525081822.53547-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 MIME-Version: 1.0 Content-Transfer-Encoding: 7BIT Content-Type: text/plain; charset=US-ASCII 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 Hi everyone, This series contains a few patches to remove unneeded lock page and PageMovable check, reduce the rcu lock duration. Also we fix potential pte_unmap on an not mapped pte. More details can be found in the respective changelogs. Thanks! --- v3: [PATCH 1/4] mm/migration: reduce the rcu lock duration add the analysis that the original race condition isn't possible now alsoreduce the rcu lock duration in kernel_migrate_pages [PATCH 2/4] mm/migration: remove unneeded lock page and PageMovable check let free_pages_prepare() clear PG_isolated for us [PATCH 3/4] mm/migration: return errno when isolate_huge_page failed rename isolate_huge_page to isolate_hugetlb [PATCH 4/4] mm/migration: fix potential pte_unmap on an not mapped pte collect Reviewed-by tag v2: collect Reviewed-by tag make isolate_huge_page consistent with isolate_lru_page add hugetlbfs variant of hugetlb_migration_entry_wait v1: rebase [1] on mainline. [1] https://lore.kernel.org/lkml/20220304093409.25829-2-linmiaohe@huawei.com/T/ --- Miaohe Lin (4): mm: reduce the rcu lock duration mm/migration: remove unneeded lock page and PageMovable check mm/migration: return errno when isolate_huge_page failed mm/migration: fix potential pte_unmap on an not mapped pte include/linux/hugetlb.h | 6 +++--- include/linux/swapops.h | 12 ++++++++---- mm/gup.c | 2 +- mm/hugetlb.c | 15 +++++++-------- mm/memory-failure.c | 2 +- mm/mempolicy.c | 5 ++--- mm/migrate.c | 40 +++++++++++++++++++++++++--------------- 7 files changed, 47 insertions(+), 35 deletions(-) -- 2.23.0