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-rw-r--r--Documentation/filesystems/btrfs.txt4
1 files changed, 3 insertions, 1 deletions
diff --git a/Documentation/filesystems/btrfs.txt b/Documentation/filesystems/btrfs.txt
index bbd1f0f57ce9..e05c6aecc0cc 100644
--- a/Documentation/filesystems/btrfs.txt
+++ b/Documentation/filesystems/btrfs.txt
@@ -159,8 +159,10 @@ Options with (*) are default options and will not show in the mount options.
Enable/disable data copy-on-write for newly created files.
Nodatacow implies nodatasum, and disables all compression.
+ datasum(*)
nodatasum
- Disable data checksumming for newly created files.
+ Enable/disable data checksumming for newly created files.
+ Datasum implies datacow.
notreelog
Disable the tree logging used for fsync and O_SYNC writes.