On Tue, Aug 30, 2016 at 01:51:06AM +0300, Jarkko Sakkinen wrote:

Unseal and load operations should be done as an atomic operation. This
commit introduces unlocked tpm_transmit() so that tpm2_unseal_trusted()
can do the locking by itself.

v2: Introduced an unlocked unseal operation instead of changing locking
    strategy in order to make less intrusive bug fix and thus more
    backportable.

v3: Have also separate __tpm_transmit() that takes 'flags' in order to
    better localize the bug fix and make it easier to backport.

v4: Cleaned up the control flow in tpm2_unseal_trusted. Added the
    missing 'Fixes' line.

v5: Previous versions did not set the enum to any value, so it was set
    to zero. Changed enum to TPM_TRANSMIT_UNLOCKED because it is
    guaranteed to catch such situation. With change the common case
    adds so little clutter that the wrappers do not make sense anymore.

v6: Added flags parameter to internal TPM command wrappers to have
    an expected default behavior and documented them.

Yeah, this is nice.

BTW, do not put the vX: stuff into the commit message, and it would be
best to include it after the diffstat the patch email

Reviewed-by: Jason Gunthorpe <redacted>

Jason