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-rw-r--r--mm/vmscan.c12
1 files changed, 4 insertions, 8 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a9bd8b2da2c8..1f35364e0feb 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3021,15 +3021,10 @@ static bool zone_balanced(struct zone *zone, int order, int classzone_idx)
*
* Returns true if kswapd is ready to sleep
*/
-static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, long remaining,
- int classzone_idx)
+static bool prepare_kswapd_sleep(pg_data_t *pgdat, int order, int classzone_idx)
{
int i;
- /* If a direct reclaimer woke kswapd within HZ/10, it's premature */
- if (remaining)
- return false;
-
/*
* The throttled processes are normally woken up in balance_pgdat() as
* soon as pfmemalloc_watermark_ok() is true. But there is a potential
@@ -3244,7 +3239,7 @@ static void kswapd_try_to_sleep(pg_data_t *pgdat, int alloc_order, int reclaim_o
prepare_to_wait(&pgdat->kswapd_wait, &wait, TASK_INTERRUPTIBLE);
/* Try to sleep for a short interval */
- if (prepare_kswapd_sleep(pgdat, reclaim_order, remaining, classzone_idx)) {
+ if (prepare_kswapd_sleep(pgdat, reclaim_order, classzone_idx)) {
/*
* Compaction records what page blocks it recently failed to
* isolate pages from and skips them in the future scanning.
@@ -3279,7 +3274,8 @@ static void kswapd_try_to_sleep(pg_data_t *pgdat, int alloc_order, int reclaim_o
* After a short sleep, check if it was a premature sleep. If not, then
* go fully to sleep until explicitly woken up.
*/
- if (prepare_kswapd_sleep(pgdat, reclaim_order, remaining, classzone_idx)) {
+ if (!remaining &&
+ prepare_kswapd_sleep(pgdat, reclaim_order, classzone_idx)) {
trace_mm_vmscan_kswapd_sleep(pgdat->node_id);
/*