hmm_vma_fault
return hmm_vma_fault(addr, end, required_fault, walk);
return hmm_vma_fault(addr, end, required_fault, walk);
return hmm_vma_fault(addr, end, required_fault, walk);
return hmm_vma_fault(addr, end, required_fault, walk);
return hmm_vma_fault(addr, end, required_fault, walk);
ret = hmm_vma_fault(addr, end, required_fault, walk);