diff --git a/fs/btrfs/file-item.c b/fs/btrfs/file-item.c
index c7fb3a4..078b4fd 100644
--- a/fs/btrfs/file-item.c
+++ b/fs/btrfs/file-item.c
@@ -447,13 +447,13 @@
 			sums->bytenr = ordered->start;
 		}
 
-		data = kmap_atomic(bvec->bv_page, KM_USER0);
+		data = kmap_atomic(bvec->bv_page);
 		sector_sum->sum = ~(u32)0;
 		sector_sum->sum = btrfs_csum_data(root,
 						  data + bvec->bv_offset,
 						  sector_sum->sum,
 						  bvec->bv_len);
-		kunmap_atomic(data, KM_USER0);
+		kunmap_atomic(data);
 		btrfs_csum_final(sector_sum->sum,
 				 (char *)&sector_sum->sum);
 		sector_sum->bytenr = disk_bytenr;