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NFSD: Add cb_lost tracepoint

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[ Upstream commit 806d65b617d89be887fe68bfa051f78143669cd7 ]

Provide more clarity about when the callback channel is in trouble.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Chuck Lever
2021-05-14 15:56:43 -04:00
committed by Greg Kroah-Hartman
parent 3076ede3fc
commit 634816f9d3
2 changed files with 3 additions and 0 deletions
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2
fs/nfsd/nfs4state.c
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@@ -1763,6 +1763,8 @@ 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);

1
fs/nfsd/trace.h
View File

@@ -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);