lockd: Unify cast_status

cast_status folds internal lock-daemon sentinels into NLMv1/v3
wire status codes for the v3 reply path.  Two variants have
existed since the original kernel import: a strict allowlist
under CONFIG_LOCKD_V4 and a sentinel-translation form for the
!CONFIG_LOCKD_V4 build.  The split was never grounded in a
behavioural difference -- nlmsvc_testlock and nlmsvc_lock,
which feed cast_status, return the same set of values in both
configurations -- and recent xdrgen conversions have narrowed
the caller set further: nlm__int__stale_fh and nlm__int__failed
are now translated at their point of origin in nlm3svc_lookup_file,
and the cast_status wraps around nlmsvc_cancel_blocked and
nlmsvc_unlock have been dropped because those functions return
only wire codes.

Collapse the two variants into one.  The unified form keeps the
CONFIG_LOCKD_V4 arm's allowlist, retains the nlm__int__deadlock
translation, and folds anything else to nlm_lck_denied_nolocks
after a pr_warn_once so an unexpected sentinel from a future
refactor remains visible in the kernel log instead of being
silently passed to the wire encoder.

Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>

0 files changed, 0 insertions, 0 deletions