/sys/kernel/mm/transparent_hugepage/khugepaged/pages_collapsed is used
to record the counter of collapsed THP, but it just gets inc'ed in
anonymous THP collapse path, do this for shmem THP collapse too.
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
---
v1 --> v2:
* Seperate from the previous patch per Kirill's comment
mm/khugepaged.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/khugepaged.c b/mm/khugepaged.c
index 9b0ec30..4018826 100644
--- a/mm/khugepaged.c
+++ b/mm/khugepaged.c
@@ -1521,6 +1521,8 @@ static void collapse_shmem(struct mm_struct *mm,
unlock_page(new_page);
*hpage = NULL;
+
+ khugepaged_pages_collapsed++;
} else {
/* Something went wrong: rollback changes to the radix-tree */
shmem_uncharge(mapping->host, nr_none);
--
1.8.3.1
