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=-19.0 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,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 B98BBC43603 for ; Mon, 15 Mar 2021 14:09:17 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7684564F2E for ; Mon, 15 Mar 2021 14:09:17 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233131AbhCOOIx (ORCPT ); Mon, 15 Mar 2021 10:08:53 -0400 Received: from mail.kernel.org ([198.145.29.99]:49564 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234285AbhCOODK (ORCPT ); Mon, 15 Mar 2021 10:03:10 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id A811E64EFD; Mon, 15 Mar 2021 14:03:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1615816989; bh=ERz6ssP8kJ488LaIEYLEXzLP4bSgglreztNgSBLk5xE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=kG/wllXiSZ43bCP4klYoK4vAyZgrSTNPVzSyie+x/gkrkttYRLzRKsNhgaV267pfe CUDfsOF+S9EXuSrVJvYxEI8IaKgRLtNYL2dUr24/avsS91zdnjCLmfW5br6e8HUGWA EbmWRohaZqS/LEJ1Z219JOtrlrgwdaDe2RbjATQE= From: gregkh@linuxfoundation.org To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Trond Myklebust , Anna Schumaker , Sasha Levin Subject: [PATCH 5.11 247/306] NFS: Dont gratuitously clear the inode cache when lookup failed Date: Mon, 15 Mar 2021 14:55:10 +0100 Message-Id: <20210315135515.996670172@linuxfoundation.org> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20210315135507.611436477@linuxfoundation.org> References: <20210315135507.611436477@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Greg Kroah-Hartman From: Trond Myklebust [ Upstream commit 47397915ede0192235474b145ebcd81b37b03624 ] The fact that the lookup revalidation failed, does not mean that the inode contents have changed. Fixes: 5ceb9d7fdaaf ("NFS: Refactor nfs_lookup_revalidate()") Signed-off-by: Trond Myklebust Signed-off-by: Anna Schumaker Signed-off-by: Sasha Levin --- fs/nfs/dir.c | 20 ++++++++------------ 1 file changed, 8 insertions(+), 12 deletions(-) diff --git a/fs/nfs/dir.c b/fs/nfs/dir.c index 7bcc6fcf1096..4db3018776f6 100644 --- a/fs/nfs/dir.c +++ b/fs/nfs/dir.c @@ -1444,18 +1444,14 @@ nfs_lookup_revalidate_done(struct inode *dir, struct dentry *dentry, __func__, dentry); return 1; case 0: - if (inode && S_ISDIR(inode->i_mode)) { - /* Purge readdir caches. */ - nfs_zap_caches(inode); - /* - * We can't d_drop the root of a disconnected tree: - * its d_hash is on the s_anon list and d_drop() would hide - * it from shrink_dcache_for_unmount(), leading to busy - * inodes on unmount and further oopses. - */ - if (IS_ROOT(dentry)) - return 1; - } + /* + * We can't d_drop the root of a disconnected tree: + * its d_hash is on the s_anon list and d_drop() would hide + * it from shrink_dcache_for_unmount(), leading to busy + * inodes on unmount and further oopses. + */ + if (inode && IS_ROOT(dentry)) + return 1; dfprintk(LOOKUPCACHE, "NFS: %s(%pd2) is invalid\n", __func__, dentry); return 0; -- 2.30.1