On 05/08/2025 11:24, David Hildenbrand wrote:

On 04.08.25 17:40, Usama Arif wrote:

quoted

This includes the PR_SET_THP_DISABLE/PR_GET_THP_DISABLE pair of
prctl calls as well the newly introduced PR_THP_DISABLE_EXCEPT_ADVISED
flag for the PR_SET_THP_DISABLE prctl call.

Signed-off-by: Usama Arif <redacted>
---
  Documentation/admin-guide/mm/transhuge.rst | 38 ++++++++++++++++++++++
  1 file changed, 38 insertions(+)

diff --git a/Documentation/admin-guide/mm/transhuge.rst b/Documentation/admin-guide/mm/transhuge.rst
index 370fba113460..a36a04394ff5 100644
--- a/Documentation/admin-guide/mm/transhuge.rst
+++ b/Documentation/admin-guide/mm/transhuge.rst

@@ -225,6 +225,44 @@ to "always" or "madvise"), and it'll be automatically shutdown when

  PMD-sized THP is disabled (when both the per-size anon control and the
  top-level control are "never")
  +process THP controls
+--------------------
+
+A process can control its own THP behaviour using the ``PR_SET_THP_DISABLE``
+and ``PR_GET_THP_DISABLE`` pair of prctl(2) calls. These calls support the
+following arguments::
+

Not sure if we really want to talk about MMF_ internals.

Thanks! have changed it for the next revision according to your suggestions.