bcache as a new i/o layer?

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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
Supporto Tecnico
Assyoma S.r.l. - www.assyoma.it
email: g.danti@xxxxxxxxxx - info@xxxxxxxxxx
GPG public key ID: FF5F32A8

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