[PATCH v2 0/3] dm-inlinecrypt: add target for inline block device encryption

Linlin Zhang
2026-04-10T13:40:39Z

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This patch series is based on Eric’s work posted at:
https://lore.kernel.org/all/ecbb7ea8-11f6-30c1-ad77-bd984c52ca33@quicinc.com/

Eric’s patches introduce a new dm target, dm-inlinecrypt, to support inline
block-device encryption. The implementation builds on the work previously done
in Android’s dm-default-key, but intentionally drops passthrough support,
as that functionality does not appear likely to be accepted upstream in the
near future. With this limitation, dm-inlinecrypt is positioned as a
practical replacement for dm-crypt, rather than a general passthrough
mechanism.

On top of Eric’s series, keyring key support is added in dm-inlinecrypt. Thus,
both keyring key and hex key are feasible for dm-inlinecrypt. In addition,
dm-inlinecrypt.rst is added as the user-guide of dm-inlinecrypt.

V1:
https://lore.kernel.org/all/20260304121729.1532469-1-linlin.zhang@oss.qualcomm.com/

Eric Biggers (2):
block: export blk-crypto symbols required by dm-inlinecrypt
dm-inlinecrypt: add target for inline block device encryption

Linlin Zhang (1):
dm: add documentation for dm-inlinecrypt target

.../device-mapper/dm-inlinecrypt.rst | 122 ++++
block/blk-crypto.c | 3 +
drivers/md/Kconfig | 10 +
drivers/md/Makefile | 1 +
drivers/md/dm-inlinecrypt.c | 559 ++++++++++++++++++
5 files changed, 695 insertions(+)
create mode 100644 Documentation/admin-guide/device-mapper/dm-inlinecrypt.rst
create mode 100644 drivers/md/dm-inlinecrypt.c

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