rmap: drop support of non-linear mappings

We don't create non-linear mappings anymore.  Let's drop code which
handles them in rmap.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 6 deletions

diff --git a/kernel/fork.c b/kernel/fork.c
index 4dc2ddade9f1..b379d9abddc7 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -438,12 +438,8 @@ static int dup_mmap(struct mm_struct *mm, struct mm_struct *oldmm)
                                 atomic_inc(&mapping->i_mmap_writable);
                         flush_dcache_mmap_lock(mapping);
                         /* insert tmp into the share list, just after mpnt */
-                        if (unlikely(tmp->vm_flags & VM_NONLINEAR))
-                                vma_nonlinear_insert(tmp,
-                                                &mapping->i_mmap_nonlinear);
-                        else
-                                vma_interval_tree_insert_after(tmp, mpnt,
-                                                        &mapping->i_mmap);
+                        vma_interval_tree_insert_after(tmp, mpnt,
+                                        &mapping->i_mmap);
                         flush_dcache_mmap_unlock(mapping);
                         i_mmap_unlock_write(mapping);
                 }