__vma_lockdep_map
lock_acquire_shared(__vma_lockdep_map(vma), 0, 1, NULL, _RET_IP_)
lock_release(__vma_lockdep_map(vma), _RET_IP_)
lock_acquire_exclusive(__vma_lockdep_map(vma), 0, 0, NULL, _RET_IP_)
lock_release(__vma_lockdep_map(vma), _RET_IP_)
lock_acquired(__vma_lockdep_map(vma), _RET_IP_)
lockdep_init_map(__vma_lockdep_map(vma), "vm_lock", &lockdep_key, 0);
if (!lock_is_held(__vma_lockdep_map(vma)))