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Date:   Sat, 23 Mar 2019 12:13:34 -0400
From:   "Theodore Ts'o" <>
To:     "Darrick J. Wong" <>
Cc:     Eryu Guan <>, fstests <>,
        xfs <>,
        linux-ext4 <>
Subject: Re: [PATCH] ext4: prohibit fstrim in norecovery mode

On Fri, Mar 22, 2019 at 05:38:13PM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <>
> The ext4 fstrim implementation uses the block bitmaps to find free space
> that can be discarded.  If we haven't replayed the journal, the bitmaps
> will be stale and we absolutely *cannot* use stale metadata to zap the
> underlying storage.
> Signed-off-by: Darrick J. Wong <>

Thanks, applied.

					- Ted

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