Re: [PATCH 1/2] ext4: Handle casefolding with encryption

[Theodore Ts'o]

On Wed, Feb 03, 2021 at 03:55:06AM -0700, Andreas Dilger wrote:
> 
> It looks like this change will break the dirdata feature, which is similarly
> storing a data field beyond the end of the dirent. However, that feature also
> provides for flags stored in the high bits of the type field to indicate
> which of the fields are in use there.
> The first byte of each field stores
> the length, so it can be skipped even if the content is not understood.

Daniel, for context, the dirdata field is an out-of-tree feature which
is used by Lustre, and so has fairly large deployed base.  So if there
is a way that we can accomodate not breaking dirdata, that would be
good.

Did the ext4 casefold+encryption implementation escape out to any
Android handsets?

Thanks,

					- Ted