[PATCH 39/45] mm/madvise: Make madvise_cold_test_walk skip hugetlb vmas

[Oscar Salvador]

Skip hugetlb vmas as we are not interested in those.

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

diff --git a/mm/madvise.c b/mm/madvise.c
index 4c7c409e8b4a..e60311636c4c 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -565,8 +565,20 @@ static int madvise_cold_or_pageout_pte_range(pmd_t *pmd,
 	return 0;
 }
 
+static int madvise_cold_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 cold_walk_ops = {
 	.pmd_entry = madvise_cold_or_pageout_pte_range,
+	.test_walk = madvise_cold_test_walk,
 	.walk_lock = PGWALK_RDLOCK,
 };
 
-- 
2.26.2