/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....@linux.alibaba.com> Cc: Hugh Dickins <hu...@google.com> Cc: Kirill A. Shutemov <kirill.shute...@linux.intel.com> Cc: Vlastimil Babka <vba...@suse.cz> --- 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