The -next commit "mm: vmscan: enforce inactive:active ratio at the
reclaim root" [1] introduced some Clang -Wenum-conversion warnings,
mm/vmscan.c:2216:39: warning: implicit conversion from enumeration type
'enum lru_list' to different enumeration type 'enum node_stat_item'
[-Wenum-conversion]
inactive = lruvec_page_state(lruvec, inactive_lru);
~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~
mm/vmscan.c:2217:37: warning: implicit conversion from enumeration type
'enum lru_list' to different enumeration type 'enum node_stat_item'
[-Wenum-conversion]
active = lruvec_page_state(lruvec, active_lru);
~~~~~~~~~~~~~~~~~ ^~~~~~~~~~
mm/vmscan.c:2746:42: warning: implicit conversion from enumeration type
'enum lru_list' to different enumeration type 'enum node_stat_item'
[-Wenum-conversion]
file = lruvec_page_state(target_lruvec, LRU_INACTIVE_FILE);
~~~~~~~~~~~~~~~~~ ^~~~~~~~~~~~~~~~~
Since it guarantees the relative order between the LRU items, fix it by
using NR_LRU_BASE for the translation.
[1] http://lkml.kernel.org/r/20191107205334.158354-4-hannes@xxxxxxxxxxx
Signed-off-by: Qian Cai <cai@xxxxxx>
---
v2: use NR_LRU_BASE/NR_INACTIVE_FILE per Johannes.
mm/vmscan.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 122b3920aaa4..c8e88f4d9932 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2213,8 +2213,8 @@ static bool inactive_is_low(struct lruvec *lruvec, enum lru_list inactive_lru)
unsigned long inactive_ratio;
unsigned long gb;
- inactive = lruvec_page_state(lruvec, inactive_lru);
- active = lruvec_page_state(lruvec, active_lru);
+ inactive = lruvec_page_state(lruvec, NR_LRU_BASE + inactive_lru);
+ active = lruvec_page_state(lruvec, NR_LRU_BASE + active_lru);
gb = (inactive + active) >> (30 - PAGE_SHIFT);
if (gb)
@@ -2743,7 +2743,7 @@ static bool shrink_node(pg_data_t *pgdat, struct scan_control *sc)
* thrashing, try to reclaim those first before touching
* anonymous pages.
*/
- file = lruvec_page_state(target_lruvec, LRU_INACTIVE_FILE);
+ file = lruvec_page_state(target_lruvec, NR_INACTIVE_FILE);
if (file >> sc->priority && !(sc->may_deactivate & DEACTIVATE_FILE))
sc->cache_trim_mode = 1;
else
--
1.8.3.1
