mm/huge_memory: rename freeze_page() to unmap_page()

[linux-2.6-block.git] / mm / rmap.c

diff --git a/mm/rmap.c b/mm/rmap.c
index 1e79fac3186b63208cbe37a8c05597c44d2234c9..85b7f94233526acc1863539caae49b6e640b3434 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1627,16 +1627,9 @@ static bool try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
                                                      address + PAGE_SIZE);
                } else {
                        /*
-                        * We should not need to notify here as we reach this
-                        * case only from freeze_page() itself only call from
-                        * split_huge_page_to_list() so everything below must
-                        * be true:
-                        *   - page is not anonymous
-                        *   - page is locked
-                        *
-                        * So as it is a locked file back page thus it can not
-                        * be remove from the page cache and replace by a new
-                        * page before mmu_notifier_invalidate_range_end so no
+                        * This is a locked file-backed page, thus it cannot
+                        * be removed from the page cache and replaced by a new
+                        * page before mmu_notifier_invalidate_range_end, so no
                         * concurrent thread might update its page table to
                         * point at new page while a device still is using this
                         * page.