diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 2f2415a7a688..e2e9f48b06c2 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -3042,11 +3042,16 @@ static int special_mapping_fault(struct vm_area_struct *vma, pgoff_t pgoff; struct page **pages; - if (vma->vm_ops == &legacy_special_mapping_vmops) + if (vma->vm_ops == &legacy_special_mapping_vmops) { pages = vma->vm_private_data; - else - pages = ((struct vm_special_mapping *)vma->vm_private_data)-> - pages; + } else { + struct vm_special_mapping *sm = vma->vm_private_data; + + if (sm->fault) + return sm->fault(sm, vma, vmf); + + pages = sm->pages; + } for (pgoff = vmf->pgoff; pgoff && *pages; ++pages) pgoff--; |