[PATCH 43/45] mm/memcontrol: Make mem_cgroup_count_test_walk skip hugetlb vmas

From: Oscar Salvador
Date: Thu Jul 04 2024 - 00:41:36 EST


Skip hugetlb vmas as we are not interested in those.

Signed-off-by: Oscar Salvador <osalvador@xxxxxxx>
---
mm/memcontrol-v1.c | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/mm/memcontrol-v1.c b/mm/memcontrol-v1.c
index 542922562cf9..cd8ad1a7f170 100644
--- a/mm/memcontrol-v1.c
+++ b/mm/memcontrol-v1.c
@@ -1039,8 +1039,20 @@ static int mem_cgroup_count_precharge_pte_range(pmd_t *pmd,
return 0;
}

+static int mem_cgroup_count_test_walk(unsigned long start, unsigned long end,
+ struct mm_walk *walk)
+{
+ struct vm_area_struct *vma = walk->vma;
+
+ if (is_vm_hugetlb_page(vma))
+ return 1;
+
+ return 0;
+}
+
static const struct mm_walk_ops precharge_walk_ops = {
.pmd_entry = mem_cgroup_count_precharge_pte_range,
+ .test_walk = mem_cgroup_count_test_walk,
.walk_lock = PGWALK_RDLOCK,
};

--
2.26.2