Add documention for 'write_size' huge option, as well as making previous
huge options more clear.
Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxxxxxxxxx>
---
Documentation/filesystems/tmpfs.rst | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)
diff --git a/Documentation/filesystems/tmpfs.rst b/Documentation/filesystems/tmpfs.rst
index 56a26c843dbe..be998ff47018 100644
--- a/Documentation/filesystems/tmpfs.rst
+++ b/Documentation/filesystems/tmpfs.rst
@@ -115,10 +115,11 @@ The mount options for this are:
================ ==============================================================
huge=never Do not allocate huge pages. This is the default.
-huge=always Attempt to allocate huge page every time a new page is needed.
-huge=within_size Only allocate huge page if it will be fully within i_size.
+huge=always Attempt to allocate PMD sized huge page every time a new page is needed.
+huge=within_size Only allocate PMD sized huge page if it will be fully within i_size.
Also respect madvise(2) hints.
-huge=advise Only allocate huge page if requested with madvise(2).
+huge=advise Only allocate PMD sized huge page if requested with madvise(2).
+huge=write_size Can allocate various sized huge page based on the write size.
================ ==============================================================
See also Documentation/admin-guide/mm/transhuge.rst, which describes the
--
2.39.3
