diff --git a/[refs] b/[refs]
index fd0e46cf10bf..9f60001ff612 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 1ba151cdf5ac120fc829ee6524fefedc6828947f
+refs/heads/master: 2c88ae90939c2ef8ae80b07713b898c577b81598
diff --git a/trunk/crypto/async_tx/async_xor.c b/trunk/crypto/async_tx/async_xor.c
index 154cc84381c2..8ade0a0481c6 100644
--- a/trunk/crypto/async_tx/async_xor.c
+++ b/trunk/crypto/async_tx/async_xor.c
@@ -230,9 +230,7 @@ EXPORT_SYMBOL_GPL(async_xor);
 
 static int page_is_zero(struct page *p, unsigned int offset, size_t len)
 {
-	char *a = page_address(p) + offset;
-	return ((*(u32 *) a) == 0 &&
-		memcmp(a, a + 4, len - 4) == 0);
+	return !memchr_inv(page_address(p) + offset, 0, len);
 }
 
 static inline struct dma_chan *