[0/1] sed-opal: geometry feature reporting command

Message

Ondrej Kozina April 6, 2023, 1:19 p.m. UTC

While further testing various OPAL drives we have discovered that
some drives may impose alignment requirements that can not be
satisfied without reading some aditional parameters reported
by sed-opal iface.

We used to stick to physical block size reported by general block
device in place of LogicalBlockSize as reported by opal 'geometry',
but at least 2 aditional restrictions can not be easily mapped to
anything currently reported by block layer.

Without this patch we can not properly align locking ranges created
via sed-opal iface.

(Also it helps us to explain to userspace what went wrong)

Ondrej Kozina (1):
  sed-opal: geometry feature reporting command

 block/sed-opal.c              | 29 ++++++++++++++++++++++++++++-
 include/linux/sed-opal.h      |  1 +
 include/uapi/linux/sed-opal.h | 13 +++++++++++++
 3 files changed, 42 insertions(+), 1 deletion(-)