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-rw-r--r--Documentation/filesystems/ext4.txt4
1 files changed, 4 insertions, 0 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 919a3293aaa4..6c0108eb0137 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -386,6 +386,10 @@ max_dir_size_kb=n This limits the size of directories so that any
i_version Enable 64-bit inode version support. This option is
off by default.
+dax Use direct access (no page cache). See
+ Documentation/filesystems/dax.txt. Note that
+ this option is incompatible with data=journal.
+
Data Mode
=========
There are 3 different data modes: