diff options
Diffstat (limited to 'mm/page_alloc.c')
| -rw-r--r-- | mm/page_alloc.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/mm/page_alloc.c b/mm/page_alloc.c index 3bda3f4570a2..f47439e0ef10 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -1082,12 +1082,27 @@ static __always_inline bool free_pages_prepare(struct page *page, int bad = 0; bool skip_kasan_poison = should_skip_kasan_poison(page, fpi_flags); bool init = want_init_on_free(); + struct folio *folio = page_folio(page); VM_BUG_ON_PAGE(PageTail(page), page); trace_mm_page_free(page, order); kmsan_free_page(page, order); + /* + * In rare cases, when truncation or holepunching raced with + * munlock after VM_LOCKED was cleared, Mlocked may still be + * found set here. This does not indicate a problem, unless + * "unevictable_pgs_cleared" appears worryingly large. + */ + if (unlikely(folio_test_mlocked(folio))) { + long nr_pages = folio_nr_pages(folio); + + __folio_clear_mlocked(folio); + zone_stat_mod_folio(folio, NR_MLOCK, -nr_pages); + count_vm_events(UNEVICTABLE_PGCLEARED, nr_pages); + } + if (unlikely(PageHWPoison(page)) && !order) { /* * Do not let hwpoison pages hit pcplists/buddy |