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Diffstat (limited to 'mm/swap_state.c')
-rw-r--r--mm/swap_state.c9
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);