diff options
| -rw-r--r-- | mm/vmscan.c | 16 |
1 files changed, 4 insertions, 12 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 0684da19aa64..51ffd32e6e01 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -477,17 +477,6 @@ static int reclaimer_offset(struct scan_control *sc) return PGSTEAL_DIRECT - PGSTEAL_KSWAPD; } -static inline int is_page_cache_freeable(struct folio *folio) -{ - /* - * A freeable page cache folio is referenced only by the caller - * that isolated the folio, the page cache and optional filesystem - * private data at folio->private. - */ - return folio_ref_count(folio) - folio_test_private(folio) == - 1 + folio_nr_pages(folio); -} - /* * We detected a synchronous write error writing a folio out. Probably * -ENOSPC. We need to propagate that into the address_space for a subsequent @@ -696,8 +685,11 @@ static pageout_t pageout(struct folio *folio, struct address_space *mapping, * block, for some throttling. This happens by accident, because * swap_backing_dev_info is bust: it doesn't reflect the * congestion state of the swapdevs. Easy to fix, if needed. + * + * A freeable shmem or swapcache folio is referenced only by the + * caller that isolated the folio and the page cache. */ - if (!is_page_cache_freeable(folio) || !mapping) + if (folio_ref_count(folio) != 1 + folio_nr_pages(folio) || !mapping) return PAGE_KEEP; if (!shmem_mapping(mapping) && !folio_test_anon(folio)) return PAGE_ACTIVATE; |