From nobody Fri Oct 24 20:32:39 2025 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30441C00140 for ; Mon, 15 Aug 2022 22:58:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352521AbiHOW6m (ORCPT ); Mon, 15 Aug 2022 18:58:42 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:45092 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352708AbiHOW4i (ORCPT ); Mon, 15 Aug 2022 18:56:38 -0400 Received: from ams.source.kernel.org (ams.source.kernel.org [IPv6:2604:1380:4601:e00::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 121DE46DBE; Mon, 15 Aug 2022 12:55:59 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 51D64B81142; Mon, 15 Aug 2022 19:55:58 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 99A9CC433C1; Mon, 15 Aug 2022 19:55:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1660593357; bh=f0q2yyCScM3El/XPzBMiJUBWiLD23cRMwvIJWRDaL5I=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=K+R0BFplVVMUQ3GJzuSEvbPrDWfw4RTDYdC6a0NbhioZeEmwW23XiRKRDriJHuVm2 bWmlh7PF+FfVJUeN3dqkJvJrVS45whY1xccLkANzLGkc6FSFb9oa4RAfkuLD54P7Jl +lc3tKYqb1tZYFVn75gQC/o+T7+gGvAdQkksBYOg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Chao Yu , Chao Liu , Jaegeuk Kim , Sasha Levin Subject: [PATCH 5.18 0934/1095] f2fs: fix to remove F2FS_COMPR_FL and tag F2FS_NOCOMP_FL at the same time Date: Mon, 15 Aug 2022 20:05:33 +0200 Message-Id: <20220815180507.853329901@linuxfoundation.org> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220815180429.240518113@linuxfoundation.org> References: <20220815180429.240518113@linuxfoundation.org> User-Agent: quilt/0.67 MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Chao Liu [ Upstream commit 8ee236dcaa690d09ca612622e8bc8d09c302021d ] If the inode has the compress flag, it will fail to use 'chattr -c +m' to remove its compress flag and tag no compress flag. However, the same command will be successful when executed again, as shown below: $ touch foo.txt $ chattr +c foo.txt $ chattr -c +m foo.txt chattr: Invalid argument while setting flags on foo.txt $ chattr -c +m foo.txt $ f2fs_io getflags foo.txt get a flag on foo.txt ret=3D0, flags=3Dnocompression,inline_data Fix this by removing some checks in f2fs_setflags_common() that do not affect the original logic. I go through all the possible scenarios, and the results are as follows. Bold is the only thing that has changed. +---------------+-----------+-----------+----------+ | | file flags | + command +-----------+-----------+----------+ | | no flag | compr | nocompr | +---------------+-----------+-----------+----------+ | chattr +c | compr | compr | -EINVAL | | chattr -c | no flag | no flag | nocompr | | chattr +m | nocompr | -EINVAL | nocompr | | chattr -m | no flag | compr | no flag | | chattr +c +m | -EINVAL | -EINVAL | -EINVAL | | chattr +c -m | compr | compr | compr | | chattr -c +m | nocompr | *nocompr* | nocompr | | chattr -c -m | no flag | no flag | no flag | +---------------+-----------+-----------+----------+ Link: https://lore.kernel.org/linux-f2fs-devel/20220621064833.1079383-1-cha= oliu719@gmail.com/ Fixes: 4c8ff7095bef ("f2fs: support data compression") Reviewed-by: Chao Yu Signed-off-by: Chao Liu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/file.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c index ab344d5f9b82..863518695ea6 100644 --- a/fs/f2fs/file.c +++ b/fs/f2fs/file.c @@ -1867,10 +1867,7 @@ static int f2fs_setflags_common(struct inode *inode,= u32 iflags, u32 mask) if (masked_flags & F2FS_COMPR_FL) { if (!f2fs_disable_compressed_file(inode)) return -EINVAL; - } - if (iflags & F2FS_NOCOMP_FL) - return -EINVAL; - if (iflags & F2FS_COMPR_FL) { + } else { if (!f2fs_may_compress(inode)) return -EINVAL; if (S_ISREG(inode->i_mode) && inode->i_size) @@ -1879,10 +1876,6 @@ static int f2fs_setflags_common(struct inode *inode,= u32 iflags, u32 mask) set_compress_context(inode); } } - if ((iflags ^ masked_flags) & F2FS_NOCOMP_FL) { - if (masked_flags & F2FS_COMPR_FL) - return -EINVAL; - } =20 fi->i_flags =3D iflags | (fi->i_flags & ~mask); f2fs_bug_on(F2FS_I_SB(inode), (fi->i_flags & F2FS_COMPR_FL) && --=20 2.35.1