From patchwork Sat Apr 10 07:23:43 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaohe Lin X-Patchwork-Id: 12195441 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 95864C433B4 for ; Sat, 10 Apr 2021 07:24:50 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 0B73C610CB for ; Sat, 10 Apr 2021 07:24:50 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 0B73C610CB 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 11B156B006E; Sat, 10 Apr 2021 03:24:49 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 0A6136B0070; Sat, 10 Apr 2021 03:24:49 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id ED72B6B0071; Sat, 10 Apr 2021 03:24:48 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0049.hostedemail.com [216.40.44.49]) by kanga.kvack.org (Postfix) with ESMTP id D34CC6B006E for ; Sat, 10 Apr 2021 03:24:48 -0400 (EDT) Received: from smtpin16.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 7E2F5181E2094 for ; Sat, 10 Apr 2021 07:24:48 +0000 (UTC) X-FDA: 78015620256.16.2742AF1 Received: from szxga07-in.huawei.com (szxga07-in.huawei.com [45.249.212.35]) by imf29.hostedemail.com (Postfix) with ESMTP id A8A00D6 for ; Sat, 10 Apr 2021 07:24:45 +0000 (UTC) Received: from DGGEMS410-HUB.china.huawei.com (unknown [172.30.72.60]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4FHRKK0dClz9xDT; Sat, 10 Apr 2021 15:22:29 +0800 (CST) Received: from huawei.com (10.175.104.175) by DGGEMS410-HUB.china.huawei.com (10.3.19.210) with Microsoft SMTP Server id 14.3.498.0; Sat, 10 Apr 2021 15:24:35 +0800 From: Miaohe Lin To: , CC: , , , Subject: [PATCH v2 0/5] Cleanup and fixup for hugetlb Date: Sat, 10 Apr 2021 03:23:43 -0400 Message-ID: <20210410072348.20437-1-linmiaohe@huawei.com> X-Mailer: git-send-email 2.19.1 MIME-Version: 1.0 X-Originating-IP: [10.175.104.175] X-CFilter-Loop: Reflected X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: A8A00D6 X-Stat-Signature: r3pznonao1ywczxbo8fy77f748hr1qux Received-SPF: none (huawei.com>: No applicable sender policy available) receiver=imf29; identity=mailfrom; envelope-from=""; helo=szxga07-in.huawei.com; client-ip=45.249.212.35 X-HE-DKIM-Result: none/none X-HE-Tag: 1618039485-362130 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 redundant VM_BUG_ON() and simplify the return code. Also this handles the error case in hugetlb_fix_reserve_counts() correctly. More details can be found in the respective changelogs. Thanks! v1->v2: collect Reviewed-by tag remove the HPAGE_RESV_OWNER check per Mike add a comment to hugetlb_unreserve_pages per Mike expand warning message a bit for hugetlb_fix_reserve_counts Add a new patch to remove unused variable Many thanks for Mike's review and suggestion! Miaohe Lin (5): mm/hugeltb: remove redundant VM_BUG_ON() in region_add() mm/hugeltb: simplify the return code of __vma_reservation_common() mm/hugeltb: clarify (chg - freed) won't go negative in hugetlb_unreserve_pages() mm/hugeltb: handle the error case in hugetlb_fix_reserve_counts() mm/hugetlb: remove unused variable pseudo_vma in remove_inode_hugepages() fs/hugetlbfs/inode.c | 3 --- mm/hugetlb.c | 57 +++++++++++++++++++++++++------------------- 2 files changed, 33 insertions(+), 27 deletions(-)