diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index ca9d91bca0d6..6373ebd358c0 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -3063,6 +3063,14 @@ out: return ERR_PTR(ret); } +bool vma_is_special_mapping(const struct vm_area_struct *vma, + const struct vm_special_mapping *sm) +{ + return vma->vm_private_data == sm && + (vma->vm_ops == &special_mapping_vmops || + vma->vm_ops == &legacy_special_mapping_vmops); +} + /* * Called with mm->mmap_sem held for writing. * Insert a new vma covering the given region, with the given flags. |