From patchwork Wed Feb 24 20:10:18 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 12102753 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=-15.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED 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 B2E5DC433E0 for ; Wed, 24 Feb 2021 20:10:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 3E3EE64F1D for ; Wed, 24 Feb 2021 20:10:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 3E3EE64F1D Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C25A88D0061; Wed, 24 Feb 2021 15:10:20 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id BD4EE8D001E; Wed, 24 Feb 2021 15:10:20 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AEBA28D0061; Wed, 24 Feb 2021 15:10:20 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0163.hostedemail.com [216.40.44.163]) by kanga.kvack.org (Postfix) with ESMTP id 9568A8D001E for ; Wed, 24 Feb 2021 15:10:20 -0500 (EST) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 6507382FC492 for ; Wed, 24 Feb 2021 20:10:20 +0000 (UTC) X-FDA: 77854253400.20.3C09AE3 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf27.hostedemail.com (Postfix) with ESMTP id A2A3B80192EA for ; Wed, 24 Feb 2021 20:10:13 +0000 (UTC) Received: by mail.kernel.org (Postfix) with ESMTPSA id B2C5064F12; Wed, 24 Feb 2021 20:10:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1614197419; bh=tHWvyoZDisRvTn/EDMCKyTePaT1tbvgEM8wBRd/eKkk=; h=Date:From:To:Subject:In-Reply-To:From; b=UYujt1yS0Lv0EgsBCsTk3z1901w5siKfAThBWn8MGuW6jAWmrDqbIMKCA38HZbHbx htZ93kEvF4bwo9kwO8gUn6PBcWm/wwQ9AYtmYCVmKJzczqu7fHzWTmrmID/d8T2uAz AhJ3QYrwLBuxhkepyqpRziVT/O6E+6mnNvtKZJSY= Date: Wed, 24 Feb 2021 12:10:18 -0800 From: Andrew Morton To: akpm@linux-foundation.org, linmiaohe@huawei.com, linux-mm@kvack.org, mike.kravetz@oracle.com, mm-commits@vger.kernel.org, torvalds@linux-foundation.org Subject: [patch 170/173] hugetlbfs: correct some obsolete comments about inode i_mutex Message-ID: <20210224201018.Sn23UYdQF%akpm@linux-foundation.org> In-Reply-To: <20210224115824.1e289a6895087f10c41dd8d6@linux-foundation.org> User-Agent: s-nail v14.8.16 X-Stat-Signature: 63kknd9oqeupnpupgncryd6z5zzwer91 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: A2A3B80192EA Received-SPF: none (linux-foundation.org>: No applicable sender policy available) receiver=imf27; identity=mailfrom; envelope-from=""; helo=mail.kernel.org; client-ip=198.145.29.99 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614197413-105558 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: From: Miaohe Lin Subject: hugetlbfs: correct some obsolete comments about inode i_mutex Since commit 9902af79c01a ("parallel lookups: actual switch to rwsem"), i_mutex of inode is converted to i_rwsem. So replace i_mutex with i_rwsem to make comments up to date. Link: https://lkml.kernel.org/r/20210127093111.36672-1-linmiaohe@huawei.com Signed-off-by: Miaohe Lin Cc: Mike Kravetz Signed-off-by: Andrew Morton --- fs/hugetlbfs/inode.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/fs/hugetlbfs/inode.c~hugetlbfs-correct-some-obsolete-comments-about-inode-i_mutex +++ a/fs/hugetlbfs/inode.c @@ -604,7 +604,7 @@ static long hugetlbfs_punch_hole(struct inode_lock(inode); - /* protected by i_mutex */ + /* protected by i_rwsem */ if (info->seals & (F_SEAL_WRITE | F_SEAL_FUTURE_WRITE)) { inode_unlock(inode); return -EPERM; @@ -777,7 +777,7 @@ static int hugetlbfs_setattr(struct user if (newsize & ~huge_page_mask(h)) return -EINVAL; - /* protected by i_mutex */ + /* protected by i_rwsem */ if ((newsize < oldsize && (info->seals & F_SEAL_SHRINK)) || (newsize > oldsize && (info->seals & F_SEAL_GROW))) return -EPERM;