Re: [PATCH 1/3] fscrypt: add support for inline-encryption-optimized policies
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- To: Dave Chinner <david@xxxxxxxxxxxxx>, linux-fscrypt@xxxxxxxxxxxxxxx, linux-ext4@xxxxxxxxxxxxxxx, linux-f2fs-devel@xxxxxxxxxxxxxxxxxxxxx, linux-fsdevel@xxxxxxxxxxxxxxx, Satya Tangirala <satyat@xxxxxxxxxx>, Paul Crowley <paulcrowley@xxxxxxxxxx>, Paul Lawrence <paullawrence@xxxxxxxxxx>, "Theodore Y . Ts'o" <tytso@xxxxxxx>, Jaegeuk Kim <jaegeuk@xxxxxxxxxx>
- Subject: Re: [PATCH 1/3] fscrypt: add support for inline-encryption-optimized policies
- From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
- Date: Wed, 23 Oct 2019 02:28:16 -0700
- In-reply-to: <20191022060004.GA333751@sol.localdomain>
- References: <20191021230355.23136-1-ebiggers@kernel.org> <20191021230355.23136-2-ebiggers@kernel.org> <20191022052712.GA2083@dread.disaster.area> <20191022060004.GA333751@sol.localdomain>
- User-agent: Mutt/1.12.1 (2019-06-15)
On Mon, Oct 21, 2019 at 11:00:04PM -0700, Eric Biggers wrote:
> An alternative which would work nicely on ext4 and xfs (if xfs supported
> fscrypt) would be to pass the physical block number as the DUN. However, that
> wouldn't work at all on f2fs because f2fs moves data blocks around.
XFS can also move data blocks around. Even ext4 can do that for limited
cases (defrag).
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