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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,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 DC426C433C1 for ; Tue, 23 Mar 2021 13:55:07 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 745E161994 for ; Tue, 23 Mar 2021 13:55:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 745E161994 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 F2C146B0157; Tue, 23 Mar 2021 09:55:06 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id EB4D46B015B; Tue, 23 Mar 2021 09:55:06 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id DC9116B015C; Tue, 23 Mar 2021 09:55:06 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0127.hostedemail.com [216.40.44.127]) by kanga.kvack.org (Postfix) with ESMTP id BFF086B0157 for ; Tue, 23 Mar 2021 09:55:06 -0400 (EDT) Received: from smtpin02.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay02.hostedemail.com (Postfix) with ESMTP id 779AB610C for ; Tue, 23 Mar 2021 13:55:06 +0000 (UTC) X-FDA: 77951285412.02.DA2441A Received: from szxga04-in.huawei.com (szxga04-in.huawei.com [45.249.212.190]) by imf21.hostedemail.com (Postfix) with ESMTP id 06D5FE0011E3 for ; Tue, 23 Mar 2021 13:55:03 +0000 (UTC) Received: from DGGEMS414-HUB.china.huawei.com (unknown [172.30.72.59]) by szxga04-in.huawei.com (SkyGuard) with ESMTP id 4F4Xr525Kmz19HXN; Tue, 23 Mar 2021 21:52:53 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS414-HUB.china.huawei.com (10.3.19.214) with Microsoft SMTP Server id 14.3.498.0; Tue, 23 Mar 2021 21:54:42 +0800 From: Miaohe Lin To: CC: , , , , , , , Subject: [PATCH v2 0/5] Cleanup and fixup for mm/migrate.c Date: Tue, 23 Mar 2021 09:54:00 -0400 Message-ID: <20210323135405.65059-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 Content-Type: text/plain X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected X-Stat-Signature: 51xkn9y6kb3kwyw64fwxfqu5ytc7zqw9 X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: 06D5FE0011E3 Received-SPF: none (huawei.com>: No applicable sender policy available) receiver=imf21; identity=mailfrom; envelope-from=""; helo=szxga04-in.huawei.com; client-ip=45.249.212.190 X-HE-DKIM-Result: none/none X-HE-Tag: 1616507703-229646 Content-Transfer-Encoding: quoted-printable 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: Hi all, This series contains cleanups to remove unnecessary VM_BUG_ON_PAGE and rc !=3D MIGRATEPAGE_SUCCESS check. Also use helper function to remove som= e duplicated codes. What's more, this fixes potential deadlock in NUMA balancing shared exec THP case and so on. More details can be found in the respective changelogs. Thanks! v1->v2: Fix removing the wrong assertion per Rafael. Use pr_warn_once() instead per David. Collect Reviewed-by tag. Miaohe Lin (5): mm/migrate.c: remove unnecessary VM_BUG_ON_PAGE on putback_movable_page() mm/migrate.c: remove unnecessary rc !=3D MIGRATEPAGE_SUCCESS check in 'else' case mm/migrate.c: fix potential indeterminate pte entry in migrate_vma_insert_page() mm/migrate.c: use helper migrate_vma_collect_skip() in migrate_vma_collect_hole() mm/migrate.c: fix potential deadlock in NUMA balancing shared exec THP case mm/migrate.c | 42 +++++++++++++++++++----------------------- 1 file changed, 19 insertions(+), 23 deletions(-) --=20 2.19.1