[PATCH] percpu_counters: create lib/percpu_counter.c

[linux-2.6] / mm / rmap.c

diff --git a/mm/rmap.c b/mm/rmap.c
index 05d6d73a692dc7d42588922ef5fdad13b0b26769..882a85826bb2d2c6cf5ef61ee7d3fb982b125e9b 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -596,6 +596,7 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
                                spin_unlock(&mmlist_lock);
                        }
                        dec_mm_counter(mm, anon_rss);
+#ifdef CONFIG_MIGRATION
                } else {
                        /*
                         * Store the pfn of the page in a special migration
@@ -604,12 +605,22 @@ static int try_to_unmap_one(struct page *page, struct vm_area_struct *vma,
                         */
                        BUG_ON(!migration);
                        entry = make_migration_entry(page, pte_write(pteval));
+#endif
                }
                set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
                BUG_ON(pte_file(*pte));
        } else
+#ifdef CONFIG_MIGRATION
+       if (migration) {
+               /* Establish migration entry for a file page */
+               swp_entry_t entry;
+               entry = make_migration_entry(page, pte_write(pteval));
+               set_pte_at(mm, address, pte, swp_entry_to_pte(entry));
+       } else
+#endif
                dec_mm_counter(mm, file_rss);
 
+
        page_remove_rmap(page);
        page_cache_release(page);