RDS: lock rds_conn_count decrement in rds_conn_destroy()
rds_conn_destroy() can race with all other modifications of the rds_conn_count but it was modifying the count without locking. Signed-off-by: Zach Brown <zach.brown@oracle.com>
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@ -313,6 +313,7 @@ void rds_conn_shutdown(struct rds_connection *conn)
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void rds_conn_destroy(struct rds_connection *conn)
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{
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struct rds_message *rm, *rtmp;
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unsigned long flags;
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rdsdebug("freeing conn %p for %pI4 -> "
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"%pI4\n", conn, &conn->c_laddr,
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@ -350,7 +351,9 @@ void rds_conn_destroy(struct rds_connection *conn)
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BUG_ON(!list_empty(&conn->c_retrans));
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kmem_cache_free(rds_conn_slab, conn);
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spin_lock_irqsave(&rds_conn_lock, flags);
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rds_conn_count--;
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spin_unlock_irqrestore(&rds_conn_lock, flags);
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}
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EXPORT_SYMBOL_GPL(rds_conn_destroy);
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