[PATCH v2 01/13] mm/Kconfig: CONFIG_PGTABLE_HAS_HUGE_LEAVES

[peterx at redhat.com]

From: Peter Xu <peterx at redhat.com>

Introduce a config option that will be selected as long as huge leaves are
involved in pgtable (thp or hugetlbfs).  It would be useful to mark any
code with this new config that can process either hugetlb or thp pages in
any level that is higher than pte level.

Signed-off-by: Peter Xu <peterx at redhat.com>
---
 mm/Kconfig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/mm/Kconfig b/mm/Kconfig
index cb9d470f0bf7..9350ba180d52 100644
--- a/mm/Kconfig
+++ b/mm/Kconfig
@@ -904,6 +904,9 @@ config READ_ONLY_THP_FOR_FS
 
 endif # TRANSPARENT_HUGEPAGE
 
+config PGTABLE_HAS_HUGE_LEAVES
+	def_bool TRANSPARENT_HUGEPAGE || HUGETLB_PAGE
+
 #
 # UP and nommu archs use km based percpu allocator
 #
-- 
2.41.0