diff options
Diffstat (limited to 'mm/memory.c')
| -rw-r--r-- | mm/memory.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/mm/memory.c b/mm/memory.c index ae8161f1f459..8c88b973abc5 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -2045,8 +2045,18 @@ int __handle_mm_fault(struct mm_struct *mm, struct vm_area_struct * vma, inc_page_state(pgfault); - if (is_vm_hugetlb_page(vma)) - return VM_FAULT_SIGBUS; /* mapping truncation does this. */ + if (unlikely(is_vm_hugetlb_page(vma))) { + if (valid_hugetlb_file_off(vma, address)) + /* We get here only if there was a stale(zero) TLB entry + * (because of HW prefetching). + * Low-level arch code (if needed) should have already + * purged the stale entry as part of this fault handling. + * Here we just return. + */ + return VM_FAULT_MINOR; + else + return VM_FAULT_SIGBUS; /* mapping truncation does this. */ + } /* * We need the page table lock to synchronize with kswapd |