RDS: use locking on the connection hash list

rds_conn_destroy really needs locking while it changes the
connection hash.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/rds/connection.c b/net/rds/connection.c
index 9c249f394f29..87df15b9f8e4 100644
--- a/net/rds/connection.c
+++ b/net/rds/connection.c
@@ -321,7 +321,10 @@ void rds_conn_destroy(struct rds_connection *conn)
                  "%pI4\n", conn, &conn->c_laddr,
                  &conn->c_faddr);
 
+        /* Ensure conn will not be scheduled for reconnect */
+        spin_lock_irq(&rds_conn_lock);
         hlist_del_init(&conn->c_hash_node);
+        spin_unlock_irq(&rds_conn_lock);
 
         /* wait for the rds thread to shut it down */
         atomic_set(&conn->c_state, RDS_CONN_ERROR);