vm_area_operations: kill ->migrate()

the only instance this method has ever grown was one in kernfs -
one that call ->migrate() of another vm_ops if it exists.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

1 files changed, 0 insertions, 2 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index c0a67b894c4c..f80d0194c9bc 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -286,8 +286,6 @@ struct vm_operations_struct {
          */
         struct mempolicy *(*get_policy)(struct vm_area_struct *vma,
                                         unsigned long addr);
-        int (*migrate)(struct vm_area_struct *vma, const nodemask_t *from,
-                const nodemask_t *to, unsigned long flags);
 #endif
         /* called by sys_remap_file_pages() to populate non-linear mapping */
         int (*remap_pages)(struct vm_area_struct *vma, unsigned long addr,