nfsd: drop dead COPY-vs-COPYNOTIFY type handling from s2s stateid IDR

Now that the COPY offload stateid is a first-class nfs4_stid,
nn->s2s_cp_stateids holds COPY_NOTIFY stateids exclusively (its only
inserter, nfs4_init_cp_state(), runs only from
nfs4_alloc_init_cpntf_state()). The type-distinguishing machinery is dead:

  - remove the unreferenced NFS4_COPY_STID definition;

  - drop nfs4_init_cp_state()'s cs_type argument (hardcode
    NFS4_COPYNOTIFY_STID) and its now-always-true "if (p_stid)" guard;

  - remove the cs_type == NFS4_COPYNOTIFY_STID gates in
    manage_cpntf_state() and the laundromat, which can no longer be false.

copy_stateid_t.cs_type is retained for the WARN_ON_ONCE() sanity checks on
the free paths. No functional change.

Assisted-by: Claude:claude-opus-4-8
Signed-off-by: Jeff Layton <jlayton@kernel.org>
Link: https://patch.msgid.link/20260710-nfsd-testing-v3-10-a0ff7db6aa3e@kernel.org
Signed-off-by: Chuck Lever <cel@kernel.org>

0 files changed, 0 insertions, 0 deletions