[linux-lvm] bcache as a new i/o layer?

[Gionatan Danti]

Hi list,
in BZ 1643651 I read:

"In 7.6 (and 8.0), lvm began using a new i/o layer (bcache)
to read and write data blocks."

Last time I checked, bcache was a completely different caching layer, 
unrelated from LVM. The above quote, instead, implies that bcache is now 
actively used by LVM.

Am I missing something? Can you explain how they interact/behave?
Thanks.

-- 
Danti Gionatan
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