From patchwork Mon May 9 13:14:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Miaohe Lin X-Patchwork-Id: 12843529 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 kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 547CCC4332F for ; Mon, 9 May 2022 13:14:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B05066B007E; Mon, 9 May 2022 09:14:15 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id A658E6B0078; Mon, 9 May 2022 09:14:15 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 890586B0081; Mon, 9 May 2022 09:14:15 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 61B366B0078 for ; Mon, 9 May 2022 09:14:15 -0400 (EDT) Received: from smtpin05.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id 3B16C61183 for ; Mon, 9 May 2022 13:14:15 +0000 (UTC) X-FDA: 79446248070.05.BE0322C Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by imf25.hostedemail.com (Postfix) with ESMTP id E8B05A0005 for ; Mon, 9 May 2022 13:13:57 +0000 (UTC) Received: from canpemm500002.china.huawei.com (unknown [172.30.72.55]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4KxhSn6vskzhZ1x; Mon, 9 May 2022 21:13:45 +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; Mon, 9 May 2022 21:14:08 +0800 From: Miaohe Lin To: CC: , , , , , , , , , , , Subject: [PATCH 14/15] mm/swap: fix the comment of get_kernel_pages Date: Mon, 9 May 2022 21:14:15 +0800 Message-ID: <20220509131416.17553-15-linmiaohe@huawei.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20220509131416.17553-1-linmiaohe@huawei.com> References: <20220509131416.17553-1-linmiaohe@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.175.124.27] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To canpemm500002.china.huawei.com (7.192.104.244) X-CFilter-Loop: Reflected X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: E8B05A0005 X-Stat-Signature: ay7omkrczzwmj5x37s3himgd313s1qys X-Rspam-User: Authentication-Results: imf25.hostedemail.com; dkim=none; dmarc=pass (policy=quarantine) header.from=huawei.com; spf=pass (imf25.hostedemail.com: domain of linmiaohe@huawei.com designates 45.249.212.187 as permitted sender) smtp.mailfrom=linmiaohe@huawei.com X-HE-Tag: 1652102037-934625 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: If no pages were pinned, 0 is returned in fact. Fix the corresponding comment. Signed-off-by: Miaohe Lin Reviewed-by: David Hildenbrand --- mm/swap.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/swap.c b/mm/swap.c index 6d2c37f781f8..236b37663a1a 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -168,8 +168,8 @@ EXPORT_SYMBOL(put_pages_list); * * Returns number of pages pinned. This may be fewer than the number * requested. If nr_pages is 0 or negative, returns 0. If no pages - * were pinned, returns -errno. Each page returned must be released - * with a put_page() call when it is finished with. + * were pinned, returns 0. Each page returned must be released with + * a put_page() call when it is finished with. */ int get_kernel_pages(const struct kvec *kiov, int nr_segs, int write, struct page **pages)