linux-ext4 - Re: Please reserve INCOMPAT flags

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Message-ID: <20100124194839.GB4372@thunk.org>
Date:	Sun, 24 Jan 2010 14:48:39 -0500
From:	tytso@....edu
To:	Andreas Dilger <adilger@....com>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: Please reserve INCOMPAT flags

On Sun, Sep 06, 2009 at 11:25:46AM +0200, Andreas Dilger wrote:
> Ted,
> in addition to the data-in-dirent INCOMPAT flag Rahul sent the patches
> for last week, I would like to ensure that we also have the INCOMPAT
> flag for large EA-in-inode flag reserved.  This patch is going into
> testing at one of our large customers, and I want to make sure that
> we don't accidentally get a conflicting INCOMPAT flag assignment.
> 
> #define EXT4_FEATURE_INCOMPAT_EA_INODE	0x0400
> #define EXT4_FEATURE_INCOMPAT_DIRDATA   0x1000
> 
> #define EXT4_EA_INODE_FL	0x00200000 /* Inode used for large EA */
> 

Reserving... but stupid question, do you know if anyone is currently
using the inode flag 0x00100000?  I want to make sure that's properly
documented and reserved.

Thanks,

							- Ted
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