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-rw-r--r--Documentation/admin-guide/sysctl/vm.rst3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/admin-guide/sysctl/vm.rst b/Documentation/admin-guide/sysctl/vm.rst
index 9b833e439f09..988f6a4c8084 100644
--- a/Documentation/admin-guide/sysctl/vm.rst
+++ b/Documentation/admin-guide/sysctl/vm.rst
@@ -926,6 +926,9 @@ calls without any restrictions.
The default value is 0.
+Another way to control permissions for userfaultfd is to use
+/dev/userfaultfd instead of userfaultfd(2). See
+Documentation/admin-guide/mm/userfaultfd.rst.
user_reserve_kbytes
===================