diff options
Diffstat (limited to 'mm/swap_state.c')
| -rw-r--r-- | mm/swap_state.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/mm/swap_state.c b/mm/swap_state.c index b68c93014f50..d1bdb31cab13 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -305,8 +305,10 @@ struct page * lookup_swap_cache(swp_entry_t entry) if (page && likely(!PageTransCompound(page))) { INC_CACHE_INFO(find_success); - if (TestClearPageReadahead(page)) + if (TestClearPageReadahead(page)) { atomic_inc(&swapin_readahead_hits); + count_vm_event(SWAP_RA_HIT); + } } INC_CACHE_INFO(find_total); @@ -516,8 +518,11 @@ struct page *swapin_readahead(swp_entry_t entry, gfp_t gfp_mask, gfp_mask, vma, addr, false); if (!page) continue; - if (offset != entry_offset && likely(!PageTransCompound(page))) + if (offset != entry_offset && + likely(!PageTransCompound(page))) { SetPageReadahead(page); + count_vm_event(SWAP_RA); + } put_page(page); } blk_finish_plug(&plug); |