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-rw-r--r--mm/rmap.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/mm/rmap.c b/mm/rmap.c
index 05d6d73a692d..882a85826bb2 100644
--- 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);