Provide more clarity about when the callback channel is in trouble.
Signed-off-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
---
fs/nfsd/nfs4state.c | 2 ++
fs/nfsd/trace.h | 1 +
2 files changed, 3 insertions(+)
diff --git a/fs/nfsd/nfs4state.c b/fs/nfsd/nfs4state.c
index aa645aeee7b6..377ec4a6a771 100644
--- a/fs/nfsd/nfs4state.c
+++ b/fs/nfsd/nfs4state.c
@@ -1745,6 +1745,8 @@ static void nfsd4_conn_lost(struct svc_xpt_user *u)
struct nfsd4_conn *c = container_of(u, struct nfsd4_conn, cn_xpt_user);
struct nfs4_client *clp = c->cn_session->se_client;
+ trace_nfsd_cb_lost(clp);
+
spin_lock(&clp->cl_lock);
if (!list_empty(&c->cn_persession)) {
list_del(&c->cn_persession);
diff --git a/fs/nfsd/trace.h b/fs/nfsd/trace.h
index 1c43e6647d1e..336dc4c45416 100644
--- a/fs/nfsd/trace.h
+++ b/fs/nfsd/trace.h
@@ -912,6 +912,7 @@ DEFINE_EVENT(nfsd_cb_class, nfsd_cb_##name, \
DEFINE_NFSD_CB_EVENT(setup);
DEFINE_NFSD_CB_EVENT(state);
+DEFINE_NFSD_CB_EVENT(lost);
DEFINE_NFSD_CB_EVENT(shutdown);
TRACE_DEFINE_ENUM(RPC_AUTH_NULL);
