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=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, 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 71227C55191 for ; Fri, 24 Apr 2020 12:29:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4875520700 for ; Fri, 24 Apr 2020 12:29:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587731363; bh=d9WCOVPH7L+/dPvkYP6Uk/9VEzZL2uz/ct95MRypraM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=2jYL3t57SBGx1fVHSS/pitlPu52gCljkDc0lGL6pSDGe2F6li/ISWM47vSDgT6lbJ On7u5cJbe997VBcE4KxFI6ed3yElY5nXwiA843Xdg4aDnkeyygBaprVFAunoorTBw+ SNhBh5dzWUqwjkZaB0ssIW4F3hQfwnErURJfWWn4= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728239AbgDXMYB (ORCPT ); Fri, 24 Apr 2020 08:24:01 -0400 Received: from mail.kernel.org ([198.145.29.99]:53994 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728172AbgDXMXu (ORCPT ); Fri, 24 Apr 2020 08:23:50 -0400 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id E106B2087E; Fri, 24 Apr 2020 12:23:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1587731030; bh=d9WCOVPH7L+/dPvkYP6Uk/9VEzZL2uz/ct95MRypraM=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QK+EMd5vPKqzzg20lb+tT6HP9W8+6+NxVWOxe+b04hdfU6Mu4GC7WiCMJ1rgfZd2B YWWiMYO/uFZfR9XYDAqnzEiBDi7bpGG1rwMNW2FnOcVeZCiHYbBhKwvm2dep3pRiRG 6x8HI6Sd72zOTOrGPShttSaKOtwcSMz+b8VRRQX8= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Theodore Ts'o , Sasha Levin , linux-ext4@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 23/26] ext4: increase wait time needed before reuse of deleted inode numbers Date: Fri, 24 Apr 2020 08:23:20 -0400 Message-Id: <20200424122323.10194-23-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200424122323.10194-1-sashal@kernel.org> References: <20200424122323.10194-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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) -- 2.20.1