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-rw-r--r--mm/madvise.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/mm/madvise.c b/mm/madvise.c
index dcadd5b3457e..08b207f8e61e 100644
--- a/mm/madvise.c
+++ b/mm/madvise.c
@@ -851,7 +851,12 @@ static int madvise_free_single_vma(struct vm_area_struct *vma,
static long madvise_dontneed_single_vma(struct vm_area_struct *vma,
unsigned long start, unsigned long end)
{
- zap_page_range_single(vma, start, end - start, NULL);
+ struct zap_details details = {
+ .reclaim_pt = true,
+ .even_cows = true,
+ };
+
+ zap_page_range_single(vma, start, end - start, &details);
return 0;
}