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authorKirill Tkhai <ktkhai@virtuozzo.com>2019-05-14 02:22:33 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2019-05-14 18:47:50 +0200
commitf46b79120e94f92843a83db1d9ece482ee735d3a (patch)
tree5d05501df36411d4477b83a7489c9d2feaf8cfb4 /mm/vmscan.c
parentfs/sync.c: sync_file_range(2) may use WB_SYNC_ALL writeback (diff)
downloadlinux-f46b79120e94f92843a83db1d9ece482ee735d3a.tar.xz
linux-f46b79120e94f92843a83db1d9ece482ee735d3a.zip
mm/vmscan.c: simplify shrink_inactive_list()
This merges together duplicated patterns of code. Also, replace count_memcg_events() with its irq-careless namesake, because they are already called in interrupts disabled context. Link: http://lkml.kernel.org/r/2ece1df4-2989-bc9b-6172-61e9fdde5bfd@virtuozzo.com Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Acked-by: Michal Hocko <mhocko@suse.com> Reviewed-by: Daniel Jordan <daniel.m.jordan@oracle.com> Acked-by: Johannes Weiner <hannes@cmpxchg.org> Cc: Baoquan He <bhe@redhat.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/vmscan.c')
-rw-r--r--mm/vmscan.c31
1 files changed, 9 insertions, 22 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 41a14eed2e16..888076701c33 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1907,6 +1907,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
unsigned long nr_taken;
struct reclaim_stat stat;
int file = is_file_lru(lru);
+ enum vm_event_item item;
struct pglist_data *pgdat = lruvec_pgdat(lruvec);
struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
bool stalled = false;
@@ -1934,17 +1935,10 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
__mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);
reclaim_stat->recent_scanned[file] += nr_taken;
- if (current_is_kswapd()) {
- if (global_reclaim(sc))
- __count_vm_events(PGSCAN_KSWAPD, nr_scanned);
- count_memcg_events(lruvec_memcg(lruvec), PGSCAN_KSWAPD,
- nr_scanned);
- } else {
- if (global_reclaim(sc))
- __count_vm_events(PGSCAN_DIRECT, nr_scanned);
- count_memcg_events(lruvec_memcg(lruvec), PGSCAN_DIRECT,
- nr_scanned);
- }
+ item = current_is_kswapd() ? PGSCAN_KSWAPD : PGSCAN_DIRECT;
+ if (global_reclaim(sc))
+ __count_vm_events(item, nr_scanned);
+ __count_memcg_events(lruvec_memcg(lruvec), item, nr_scanned);
spin_unlock_irq(&pgdat->lru_lock);
if (nr_taken == 0)
@@ -1955,17 +1949,10 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
spin_lock_irq(&pgdat->lru_lock);
- if (current_is_kswapd()) {
- if (global_reclaim(sc))
- __count_vm_events(PGSTEAL_KSWAPD, nr_reclaimed);
- count_memcg_events(lruvec_memcg(lruvec), PGSTEAL_KSWAPD,
- nr_reclaimed);
- } else {
- if (global_reclaim(sc))
- __count_vm_events(PGSTEAL_DIRECT, nr_reclaimed);
- count_memcg_events(lruvec_memcg(lruvec), PGSTEAL_DIRECT,
- nr_reclaimed);
- }
+ item = current_is_kswapd() ? PGSTEAL_KSWAPD : PGSTEAL_DIRECT;
+ if (global_reclaim(sc))
+ __count_vm_events(item, nr_reclaimed);
+ __count_memcg_events(lruvec_memcg(lruvec), item, nr_reclaimed);
reclaim_stat->recent_rotated[0] = stat.nr_activate[0];
reclaim_stat->recent_rotated[1] = stat.nr_activate[1];