Rich Freeman <r-btrfs <at> thefreemanclan.net> writes:

I think he is actually suggesting a hybrid approach where a bit of
effort is done during operations to greatly streamline out-of-line
deduplication.  I'm not sure how close we are to that already, or if
any room for improvement remains.

--

Hopefully, we can tweak the split between in-memory and on blkdev. I don't
see myself needing in-memory much (cc'd email with attachments perhaps?).