misc fix the chattr's man page regarding the -x flag
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
diff --git a/misc/chattr.1.in b/misc/chattr.1.in
index cd2e002..50c54e7 100644
--- a/misc/chattr.1.in
+++ b/misc/chattr.1.in
@@ -252,12 +252,16 @@
document.
.TP
.B x
-The 'x' attribute can be set on a directory or file. If the attribute
-is set on an existing directory, it will be inherited by all files and
-subdirectories that are subsequently created in the directory. If an
-existing directory has contained some files and subdirectories, modifying
-the attribute on the parent directory doesn't change the attributes on
-these files and subdirectories.
+A file with the 'x' requests the use of direct access (dax) mode, if the
+kernel supports DAX. This can be overridden by the 'dax=never' mount
+option. For more information see the kernel documentation for dax:
+<https://www.kernel.org/doc/html/latest/filesystems/dax.html>.
+.IP
+If the attribute is set on an existing directory, it will be inherited
+by all files and subdirectories that are subsequently created in the
+directory. If an existing directory has contained some files and
+subdirectories, modifying the attribute on the parent directory doesn't
+change the attributes on these files and subdirectories.
.TP
.B V
A file with the 'V' attribute set has fs-verity enabled. It cannot be
