diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 6de6dcf2743e267921b5f5a41ae78e1d10fa2ce0..2b1b227505f3a8a4ba056ecd306ea18d5a72bd0b 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -96,7 +96,7 @@ static void csum_tree_block(struct extent_buffer *buf, u8 *result)
 	crypto_shash_update(shash, kaddr + BTRFS_CSUM_SIZE,
 			    first_page_part - BTRFS_CSUM_SIZE);
 
-	for (i = 1; i < num_pages; i++) {
+	for (i = 1; i < num_pages && INLINE_EXTENT_BUFFER_PAGES > 1; i++) {
 		kaddr = page_address(buf->pages[i]);
 		crypto_shash_update(shash, kaddr, PAGE_SIZE);
 	}