mm, hugetlb: trivial commenting fix

The name of the mutex written in comment is wrong.  Fix it.

Signed-off-by: Joonsoo Kim <[email protected]>
Acked-by: Michal Hocko <[email protected]>
Acked-by: Hillf Danton <[email protected]>
Reviewed-by: Aneesh Kumar K.V <[email protected]>
Cc: Aneesh Kumar K.V <[email protected]>
Cc: Naoya Horiguchi <[email protected]>
Cc: Wanpeng Li <[email protected]>
Cc: Rik van Riel <[email protected]>
Cc: Mel Gorman <[email protected]>
Cc: KAMEZAWA Hiroyuki <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: David Gibson <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

mm/hugetlb.c

@@ -135,9 +135,9 @@ static inline struct hugepage_subpool *subpool_vma(struct vm_area_struct *vma)
  *                    across the pages in a mapping.
  *
  * The region data structures are protected by a combination of the mmap_sem
- * and the hugetlb_instantion_mutex.  To access or modify a region the caller
+ * and the hugetlb_instantiation_mutex.  To access or modify a region the caller
  * must either hold the mmap_sem for write, or the mmap_sem for read and
- * the hugetlb_instantiation mutex:
+ * the hugetlb_instantiation_mutex:
  *
  *	down_write(&mm->mmap_sem);
  * or