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Date:	Thu, 15 Oct 2015 10:32:25 -0400
From:	Theodore Ts'o <>
To:	"Darrick J. Wong" <>
Cc:, Nikolay Borisov <>
Subject: Re: [PATCH 1/8] jbd2: gate checksum calculations on crc driver
 presence, not sb flags

On Mon, Oct 12, 2015 at 02:54:22PM -0700, Darrick J. Wong wrote:
> Change the journal's checksum functions to gate on whether or not the
> crc32c driver is loaded, and gate the loading on the superblock bits.
> This prevents a journal crash if someone loads a journal in no-csum
> mode and then randomizes the superblock, thus flipping on the feature
> bits.
> v2: Create a feature-test helper, use it everywhere.
> Tested-By: Nikolay Borisov <>
> Reported-by: Nikolay Borisov <>
> Signed-off-by: Darrick J. Wong <>

Thanks, applied.

						- Ted
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