In order to support file/shmem mTHP collapse in the following patches, add an PMD-sized THP order check to avoid PMD-sized THP statistics errors. No functional changes. Signed-off-by: Baolin Wang --- mm/khugepaged.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index e64ed86d28ca..195c26699118 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -2411,10 +2411,12 @@ static int collapse_file(struct mm_struct *mm, unsigned long addr, xas_lock_irq(&xas); } - if (is_shmem) - __lruvec_stat_mod_folio(new_folio, NR_SHMEM_THPS, HPAGE_PMD_NR); - else - __lruvec_stat_mod_folio(new_folio, NR_FILE_THPS, HPAGE_PMD_NR); + if (order == HPAGE_PMD_ORDER) { + if (is_shmem) + __lruvec_stat_mod_folio(new_folio, NR_SHMEM_THPS, HPAGE_PMD_NR); + else + __lruvec_stat_mod_folio(new_folio, NR_FILE_THPS, HPAGE_PMD_NR); + } if (nr_none) { __lruvec_stat_mod_folio(new_folio, NR_FILE_PAGES, nr_none); -- 2.43.5