From patchwork Fri May 1 13:23:51 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 226573 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=-9.8 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI, SIGNED_OFF_BY, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=unavailable 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 8314CC47253 for ; Fri, 1 May 2020 13:49:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5EDC5205C9 for ; Fri, 1 May 2020 13:49:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340996; bh=d9WCOVPH7L+/dPvkYP6Uk/9VEzZL2uz/ct95MRypraM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=p9xAsKsUTRhZKZFEUeQmWUhWmp8LFzHkG3J/UNIU8K0lfgelwVgoMK+TG1XC0ZNfI xX/+iDBQlMa9JFoGHT7UAqL3sR92YXsck0qDKZlsrGFJMK9Ey98usy7UJ67ewqFNSp TTm28vXAfbA2C6MaS+6o1GQaUlp+UTdu2TuyvmDo= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1731216AbgEANtw (ORCPT ); Fri, 1 May 2020 09:49:52 -0400 Received: from mail.kernel.org ([198.145.29.99]:41018 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730659AbgEANku (ORCPT ); Fri, 1 May 2020 09:40:50 -0400 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 823AC205C9; Fri, 1 May 2020 13:40:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588340450; bh=d9WCOVPH7L+/dPvkYP6Uk/9VEzZL2uz/ct95MRypraM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0f+vgwrix9fzqc8k7+usH5ovNgz9AabKuidbj+t+GvK74YpjHp0+GR3nwA7wscOD3 LfdFMJkzFXK65+fwvSWjf8AlufSQMLR7unGRNO++vGvvPCT0RxE38ZBVeGpSCNQbjE SNPMNg3MOiFp2cBDFlK3gVdwIGHTxqXy428SyTaI= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Theodore Tso , Sasha Levin Subject: [PATCH 5.4 72/83] ext4: increase wait time needed before reuse of deleted inode numbers Date: Fri, 1 May 2020 15:23:51 +0200 Message-Id: <20200501131541.643071096@linuxfoundation.org> X-Mailer: git-send-email 2.26.2 In-Reply-To: <20200501131524.004332640@linuxfoundation.org> References: <20200501131524.004332640@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Theodore Ts'o [ Upstream commit a17a9d935dc4a50acefaf319d58030f1da7f115a ] Current wait times have proven to be too short to protect against inode reuses that lead to metadata inconsistencies. Now that we will retry the inode allocation if we can't find any recently deleted inodes, it's a lot safer to increase the recently deleted time from 5 seconds to a minute. Link: https://lore.kernel.org/r/20200414023925.273867-1-tytso@mit.edu Google-Bug-Id: 36602237 Signed-off-by: Theodore Ts'o Signed-off-by: Sasha Levin --- fs/ext4/ialloc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c index a6288730210e8..64b6549dd9016 100644 --- a/fs/ext4/ialloc.c +++ b/fs/ext4/ialloc.c @@ -660,7 +660,7 @@ static int find_group_other(struct super_block *sb, struct inode *parent, * block has been written back to disk. (Yes, these values are * somewhat arbitrary...) */ -#define RECENTCY_MIN 5 +#define RECENTCY_MIN 60 #define RECENTCY_DIRTY 300 static int recently_deleted(struct super_block *sb, ext4_group_t group, int ino)