linux-ext4 - Re: First stab at ea inode disk format doc updates

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Message-Id: <E25342D9-DF52-460C-9260-7EF7D19A7774@dilger.ca>
Date:   Thu, 29 Jun 2017 17:50:04 -0600
From:   Andreas Dilger <adilger@...ger.ca>
To:     "Darrick J. Wong" <darrick.wong@...cle.com>
Cc:     Tahsin Erdogan <tahsin@...gle.com>, Theodore Ts'o <tytso@....edu>,
        linux-ext4@...r.kernel.org
Subject: Re: First stab at ea inode disk format doc updates

On Jun 22, 2017, at 12:18 PM, Darrick J. Wong <darrick.wong@...cle.com> wrote:
> 
> I've taken a first stab at capturing the on-disk format updates for ea
> inodes.  Let me know about any inaccuracies (though being a wiki, you
> can fix them yourself if you're so inclined).
> 
> Also -- what is the value of i_mtime (ea inode parent pointer) when the
> refcount > 1?

Thanks for the update Darrick.  I clarified that i_mtime/i_generation is
only for refcount == 1.  I don't know if the current code will clear these
values if refcount > 1 or not, or if they are just unused in that case?

> [1] https://ext4.wiki.kernel.org/index.php/Ext4_Disk_Layout


Cheers, Andreas






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