mm: move memcmp_pages() and pages_identical()

[linux-2.6-microblaze.git] / mm / util.c

diff --git a/mm/util.c b/mm/util.c
index bab284d..37f7b67 100644 (file)
--- a/mm/util.c
+++ b/mm/util.c
@@ -783,3 +783,16 @@ out_mm:
 out:
        return res;
 }
+
+int memcmp_pages(struct page *page1, struct page *page2)
+{
+       char *addr1, *addr2;
+       int ret;
+
+       addr1 = kmap_atomic(page1);
+       addr2 = kmap_atomic(page2);
+       ret = memcmp(addr1, addr2, PAGE_SIZE);
+       kunmap_atomic(addr2);
+       kunmap_atomic(addr1);
+       return ret;
+}