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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY,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 A7746C433E0 for ; Tue, 29 Dec 2020 03:13:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7A951207C5 for ; Tue, 29 Dec 2020 03:13:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727774AbgL2DMm (ORCPT ); Mon, 28 Dec 2020 22:12:42 -0500 Received: from out30-45.freemail.mail.aliyun.com ([115.124.30.45]:49531 "EHLO out30-45.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727745AbgL2DMl (ORCPT ); Mon, 28 Dec 2020 22:12:41 -0500 X-Alimail-AntiSpam: AC=PASS;BC=-1|-1;BR=01201311R181e4;CH=green;DM=||false|;DS=||;FP=0|-1|-1|-1|0|-1|-1|-1;HT=e01e04420;MF=rongwei.wang@linux.alibaba.com;NM=1;PH=DS;RN=4;SR=0;TI=SMTPD_---0UK6RXMx_1609211518; Received: from localhost.localdomain(mailfrom:rongwei.wang@linux.alibaba.com fp:SMTPD_---0UK6RXMx_1609211518) by smtp.aliyun-inc.com(127.0.0.1); Tue, 29 Dec 2020 11:11:58 +0800 From: Rongwei Wang To: akpm@linux-foundation.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, rongwei.wang@linux.alibaba.com Subject: [PATCH] mm: rectify a page bad reason Date: Tue, 29 Dec 2020 11:11:56 +0800 Message-Id: <20201229031156.3861-1-rongwei.wang@linux.alibaba.com> X-Mailer: git-send-email 2.27.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi When I was doing some memory-related projects, it always reported error "nonzero mapcount", but its judgment condition was that _mapcount was not equal to -1, so I felt the original string was a bit inappropriate, so I tried to update it. Signed-off-by: Rongwei Wang --- mm/page_alloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 7a2c89b..57d7f26 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1114,7 +1114,7 @@ static const char *page_bad_reason(struct page *page, unsigned long flags) const char *bad_reason = NULL; if (unlikely(atomic_read(&page->_mapcount) != -1)) - bad_reason = "nonzero mapcount"; + bad_reason = "non-(-1) _mapcount"; if (unlikely(page->mapping != NULL)) bad_reason = "non-NULL mapping"; if (unlikely(page_ref_count(page) != 0)) -- 1.8.3.1