[PATCH 5/9] NFSD: Budget the CB_NOTIFY_LOCK opcode

NFS4_enc_cb_notify_lock_sz counts the lock owner and the file
handle. nfs4_xdr_enc_cb_notify_lock() emits an opcode ahead of both,
so the macro falls one XDR word short.

This macro sizes p_arglen and nothing else. rq_callsize pads that
with two credential slacks, so the shortfall has never reached
the send buffer. No backport is needed.

Signed-off-by: Chuck Lever <[email protected]>
---
 fs/nfsd/xdr4cb.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/nfsd/xdr4cb.h b/fs/nfsd/xdr4cb.h
index 21d8280edead..01bb54f03d25 100644
--- a/fs/nfsd/xdr4cb.h
+++ b/fs/nfsd/xdr4cb.h
@@ -48,7 +48,7 @@
 
 #define NFS4_enc_cb_notify_lock_sz	(cb_compound_enc_hdr_sz +        \
 					cb_sequence_enc_sz +             \
-					2 + 1 +				 \
+					op_enc_sz + 2 + 1 +		 \
 					XDR_QUADLEN(NFS4_OPAQUE_LIMIT) + \
 					enc_nfs4_fh_sz)
 #define NFS4_dec_cb_notify_lock_sz	(cb_compound_dec_hdr_sz  +      \

-- 
2.54.0