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Subject[PATCH V5 9/9] Documentation/dax: Update DAX enablement for ext4
From: Ira Weiny <>

Update the document to reflect ext4 and xfs now behave the same.

Reviewed-by: Jan Kara <>
Signed-off-by: Ira Weiny <>

Changes from RFC:
Update with ext2 text...
Documentation/filesystems/dax.txt | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Documentation/filesystems/dax.txt b/Documentation/filesystems/dax.txt
index 735fb4b54117..265c4f808dbf 100644
--- a/Documentation/filesystems/dax.txt
+++ b/Documentation/filesystems/dax.txt
@@ -25,7 +25,7 @@ size when creating the filesystem.
Currently 3 filesystems support DAX: ext2, ext4 and xfs. Enabling DAX on them
is different.

-Enabling DAX on ext4 and ext2
+Enabling DAX on ext2

When mounting the filesystem, use the "-o dax" option on the command line or
@@ -33,8 +33,8 @@ add 'dax' to the options in /etc/fstab. This works to enable DAX on all files
within the filesystem. It is equivalent to the '-o dax=always' behavior below.

-Enabling DAX on xfs
+Enabling DAX on xfs and ext4

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