[PATCH v3 14/18] mshv: Use kfree_rcu in mshv_portid_free

[Stanislav Kinsburskii]

mshv_portid_free() uses synchronize_rcu() followed by kfree() to
reclaim port table entries. This blocks the caller until a full RCU
grace period elapses, which is unnecessary since the same module already
uses the non-blocking kfree_rcu() pattern in mshv_port_table_fini().

Replace with kfree_rcu() to avoid the blocking wait and keep the
reclamation strategy consistent across the file.

Signed-off-by: Stanislav Kinsburskii <skinsburskii@xxxxxxxxxxxxxxxxxxx>
---
 drivers/hv/mshv_portid_table.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hv/mshv_portid_table.c b/drivers/hv/mshv_portid_table.c
index d6884c601b298..1ccbafe7aa596 100644
--- a/drivers/hv/mshv_portid_table.c
+++ b/drivers/hv/mshv_portid_table.c
@@ -62,8 +62,7 @@ mshv_portid_free(int port_id)
 	WARN_ON(!info);
 	idr_unlock(&port_table_idr);
 
-	synchronize_rcu();
-	kfree(info);
+	kfree_rcu(info, portbl_rcu);
 }
 
 int