NFSv4: Add a tracepoint to document open stateid updates
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index cec4bcb..aa8ea51 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1481,6 +1481,7 @@ static void nfs_clear_open_stateid_locked(struct nfs4_state *state,
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
nfs4_stateid_copy(&state->stateid, stateid);
nfs4_stateid_copy(&state->open_stateid, stateid);
+ trace_nfs4_open_stateid_update(state->inode, stateid, 0);
out:
nfs_state_log_update_open_stateid(state);
}
@@ -1524,6 +1525,7 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state,
write_sequnlock(&state->seqlock);
spin_unlock(&state->owner->so_lock);
rcu_read_unlock();
+ trace_nfs4_open_stateid_update_wait(state->inode, stateid, 0);
if (!signal_pending(current)) {
if (schedule_timeout(5*HZ) == 0)
status = -EAGAIN;
@@ -1545,6 +1547,7 @@ static void nfs_set_open_stateid_locked(struct nfs4_state *state,
if (test_bit(NFS_DELEGATED_STATE, &state->flags) == 0)
nfs4_stateid_copy(&state->stateid, stateid);
nfs4_stateid_copy(&state->open_stateid, stateid);
+ trace_nfs4_open_stateid_update(state->inode, stateid, status);
nfs_state_log_update_open_stateid(state);
}
diff --git a/fs/nfs/nfs4trace.h b/fs/nfs/nfs4trace.h
index 7a5588c..06ac715 100644
--- a/fs/nfs/nfs4trace.h
+++ b/fs/nfs/nfs4trace.h
@@ -1061,6 +1061,8 @@ DECLARE_EVENT_CLASS(nfs4_inode_stateid_event,
DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_setattr);
DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_delegreturn);
+DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_open_stateid_update);
+DEFINE_NFS4_INODE_STATEID_EVENT(nfs4_open_stateid_update_wait);
DECLARE_EVENT_CLASS(nfs4_getattr_event,
TP_PROTO(