linux-ext4 - Re: [PATCH 4.19] ext4: fix race condition between ext4_ioctl_setflags and ext4

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Message-ID: <YtcCmILbA9mTh4Au@kroah.com>
Date:   Tue, 19 Jul 2022 21:14:32 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Theodore Ts'o <tytso@....edu>
Cc:     Baokun Li <libaokun1@...wei.com>, stable@...r.kernel.org,
        linux-ext4@...r.kernel.org, adilger.kernel@...ger.ca, jack@...e.cz,
        ritesh.list@...il.com, lczerner@...hat.com, enwlinux@...il.com,
        linux-kernel@...r.kernel.org, yi.zhang@...wei.com,
        yebin10@...wei.com, yukuai3@...wei.com,
        Hulk Robot <hulkci@...wei.com>
Subject: Re: [PATCH 4.19] ext4: fix race condition between
 ext4_ioctl_setflags and ext4_fiemap

On Tue, Jul 19, 2022 at 02:57:18PM -0400, Theodore Ts'o wrote:
> P.S.  If we go down this path, Greg K-H may also insist on getting the
> bug fix to the 5.4 LTS kernel, so that a bug isn't just fixed in 4.19
> LTS but not 5.4 LTS.  In which case, the same requirement of running
> "-c ext4/all -g auto" and showing that there are no test regressions
> is going to be a requirement for 5.4 LTS as well.

Yes, if this issue is also in 5.4 or any newer kernels, it HAS to be
fixed there at the same time, or before, as we can not have anyone
upgrading from an older kernel to a newer one and having a regression.

thanks,

greg k-h