linux-ext4 - Re: [PATCH 01/11] ext4: add handling for extended mount options

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Message-ID: <20190725034650.GC13651@mit.edu>
Date:   Wed, 24 Jul 2019 23:46:50 -0400
From:   "Theodore Y. Ts'o" <tytso@....edu>
To:     harshad shirwadkar <harshadshirwadkar@...il.com>
Cc:     "Darrick J. Wong" <darrick.wong@...cle.com>,
        Andreas Dilger <adilger@...ger.ca>,
        Ext4 Developers List <linux-ext4@...r.kernel.org>
Subject: Re: [PATCH 01/11] ext4: add handling for extended mount options

On Wed, Jul 24, 2019 at 11:14:39AM -0700, harshad shirwadkar wrote:
> I agree, I was going to suggest the same. We would probably need to
> add this field in all individual fast commit blocks, since we don't
> have a fast commit superblock equivalent .. and changing jbd2
> superblock is probably too much to ask for I guess.

There's spare space in the jbd2 superblock.  Just grab a byte from
s_padding2...

					- Ted