mm: enable thp migration for shmem thp

[linux.git] / mm / rmap.c

diff --git a/mm/rmap.c b/mm/rmap.c
index 9122787c4947efbe127766f6497f7619c670e0e1..8d5337fed37b81bcae0e20dad65bf0202e031477 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -32,11 +32,11 @@
  *                 mmlist_lock (in mmput, drain_mmlist and others)
  *                 mapping->private_lock (in __set_page_dirty_buffers)
  *                   mem_cgroup_{begin,end}_page_stat (memcg->move_lock)
- *                     mapping->tree_lock (widely used)
+ *                     i_pages lock (widely used)
  *                 inode->i_lock (in set_page_dirty's __mark_inode_dirty)
  *                 bdi.wb->list_lock (in set_page_dirty's __mark_inode_dirty)
  *                   sb_lock (within inode_lock in fs/fs-writeback.c)
- *                   mapping->tree_lock (widely used, in set_page_dirty,
+ *                   i_pages lock (widely used, in set_page_dirty,
  *                             in arch-dependent flush_dcache_mmap_lock,
  *                             within bdi.wb->list_lock in __sync_single_inode)
  *
@@ -1374,9 +1374,6 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
                if (!pvmw.pte && (flags & TTU_MIGRATION)) {
                        VM_BUG_ON_PAGE(PageHuge(page) || !PageTransCompound(page), page);
 
-                       if (!PageAnon(page))
-                               continue;
-
                        set_pmd_migration_entry(&pvmw, page);
                        continue;
                }