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8e51ec6146
This patch will optimize __put_lkb() by using kref_put_lock(). The function kref_put_lock() will only take the lock if the reference is going to be zero, if not the lock will never be held. Signed-off-by: Alexander Aring <aahringo@redhat.com> Signed-off-by: David Teigland <teigland@redhat.com>