mm: madvise allow remove operation for hugetlbfs

Now that we have hole punching support for hugetlbfs, we can also
support the MADV_REMOVE interface to it.

Signed-off-by: Dave Hansen <[email protected]>
Signed-off-by: Mike Kravetz <[email protected]>
Reviewed-by: Naoya Horiguchi <[email protected]>
Acked-by: Hillf Danton <[email protected]>
Cc: David Rientjes <[email protected]>
Cc: Hugh Dickins <[email protected]>
Cc: Davidlohr Bueso <[email protected]>
Cc: Aneesh Kumar <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

diff --git a/mm/madvise.c b/mm/madvise.c
index ce3a4222c7e7ae4558b201704a0ee5d55518fcfc..c889fcbb530e98d8779ef75750e1fde08bf786cf 100644 (file)
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -301,7 +301,7 @@ static long madvise_remove(struct vm_area_struct *vma,
 
        *prev = NULL;   /* tell sys_madvise we drop mmap_sem */
 
-       if (vma->vm_flags & (VM_LOCKED | VM_HUGETLB))
+       if (vma->vm_flags & VM_LOCKED)
                return -EINVAL;
 
        f = vma->vm_file;