diff options
Diffstat (limited to 'mm/page_io.c')
| -rw-r--r-- | mm/page_io.c | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/mm/page_io.c b/mm/page_io.c index 69536a2b3c13..01749b99fb54 100644 --- a/mm/page_io.c +++ b/mm/page_io.c @@ -204,7 +204,9 @@ static bool is_folio_zero_filled(struct folio *folio) static void swap_zeromap_folio_set(struct folio *folio) { + struct obj_cgroup *objcg = get_obj_cgroup_from_folio(folio); struct swap_info_struct *sis = swp_swap_info(folio->swap); + int nr_pages = folio_nr_pages(folio); swp_entry_t entry; unsigned int i; @@ -212,6 +214,12 @@ static void swap_zeromap_folio_set(struct folio *folio) entry = page_swap_entry(folio_page(folio, i)); set_bit(swp_offset(entry), sis->zeromap); } + + count_vm_events(SWPOUT_ZERO, nr_pages); + if (objcg) { + count_objcg_events(objcg, SWPOUT_ZERO, nr_pages); + obj_cgroup_put(objcg); + } } static void swap_zeromap_folio_clear(struct folio *folio) @@ -503,6 +511,7 @@ static void sio_read_complete(struct kiocb *iocb, long ret) static bool swap_read_folio_zeromap(struct folio *folio) { int nr_pages = folio_nr_pages(folio); + struct obj_cgroup *objcg; bool is_zeromap; /* @@ -517,6 +526,13 @@ static bool swap_read_folio_zeromap(struct folio *folio) if (!is_zeromap) return false; + objcg = get_obj_cgroup_from_folio(folio); + count_vm_events(SWPIN_ZERO, nr_pages); + if (objcg) { + count_objcg_events(objcg, SWPIN_ZERO, nr_pages); + obj_cgroup_put(objcg); + } + folio_zero_range(folio, 0, folio_size(folio)); folio_mark_uptodate(folio); return true; |