linux-kernel - Re: [PATCH v3 4/5] ext2: Add alignment check for DAX mount

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Message-ID: <20160508085937.GD15458@infradead.org>
Date:	Sun, 8 May 2016 01:59:37 -0700
From:	Christoph Hellwig <hch@...radead.org>
To:	Toshi Kani <toshi.kani@....com>
Cc:	dan.j.williams@...el.com, jack@...e.cz, david@...morbit.com,
	viro@...iv.linux.org.uk, axboe@...com, hch@...radead.org,
	boaz@...xistor.com, tytso@....edu, adilger.kernel@...ger.ca,
	ross.zwisler@...ux.intel.com, micah.parrish@....com,
	linux-nvdimm@...1.01.org, linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 4/5] ext2: Add alignment check for DAX mount

Not really for the patch, but given that we have the right people
on CC:

Do we really want to keep DAX support in ext2 in the long run?  ext2
is missing a lot of the useful features for a modern FS, shouldn't
we direct people to use ext4 (in non-journal mode if needed) if they
want to use DAX?  ext4 will even support the unmodified ext2 fs, so it
shouldn't be a big hurdle, and it would avoid a lot of churn in ext2.