diff options
| -rw-r--r-- | mm/khugepaged.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index cdd1d8655a76..76f05215ee87 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -546,12 +546,14 @@ static void release_pte_pages(pte_t *pte, pte_t *_pte, static bool is_refcount_suitable(struct folio *folio) { - int expected_refcount; + int expected_refcount = folio_mapcount(folio); - expected_refcount = folio_mapcount(folio); - if (folio_test_swapcache(folio)) + if (!folio_test_anon(folio) || folio_test_swapcache(folio)) expected_refcount += folio_nr_pages(folio); + if (folio_test_private(folio)) + expected_refcount++; + return folio_ref_count(folio) == expected_refcount; } @@ -2285,8 +2287,7 @@ static int hpage_collapse_scan_file(struct mm_struct *mm, unsigned long addr, break; } - if (folio_ref_count(folio) != - 1 + folio_mapcount(folio) + folio_test_private(folio)) { + if (!is_refcount_suitable(folio)) { result = SCAN_PAGE_COUNT; break; } |