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-rw-r--r--mm/vmscan.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 88c5fed8b9a4..fa6a85378ee4 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -19,6 +19,7 @@
#include <linux/pagemap.h>
#include <linux/init.h>
#include <linux/highmem.h>
+#include <linux/vmpressure.h>
#include <linux/vmstat.h>
#include <linux/file.h>
#include <linux/writeback.h>
@@ -780,7 +781,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
if (PageAnon(page) && !PageSwapCache(page)) {
if (!(sc->gfp_mask & __GFP_IO))
goto keep_locked;
- if (!add_to_swap(page))
+ if (!add_to_swap(page, page_list))
goto activate_locked;
may_enter_fs = 1;
}
@@ -1982,6 +1983,11 @@ static void shrink_zone(struct zone *zone, struct scan_control *sc)
}
memcg = mem_cgroup_iter(root, memcg, &reclaim);
} while (memcg);
+
+ vmpressure(sc->gfp_mask, sc->target_mem_cgroup,
+ sc->nr_scanned - nr_scanned,
+ sc->nr_reclaimed - nr_reclaimed);
+
} while (should_continue_reclaim(zone, sc->nr_reclaimed - nr_reclaimed,
sc->nr_scanned - nr_scanned, sc));
}
@@ -2167,6 +2173,8 @@ static unsigned long do_try_to_free_pages(struct zonelist *zonelist,
count_vm_event(ALLOCSTALL);
do {
+ vmpressure_prio(sc->gfp_mask, sc->target_mem_cgroup,
+ sc->priority);
sc->nr_scanned = 0;
aborted_reclaim = shrink_zones(zonelist, sc);
@@ -2619,7 +2627,6 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order,
bool pgdat_is_balanced = false;
int i;
int end_zone = 0; /* Inclusive. 0 = ZONE_DMA */
- unsigned long total_scanned;
struct reclaim_state *reclaim_state = current->reclaim_state;
unsigned long nr_soft_reclaimed;
unsigned long nr_soft_scanned;
@@ -2639,7 +2646,6 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order,
.gfp_mask = sc.gfp_mask,
};
loop_again:
- total_scanned = 0;
sc.priority = DEF_PRIORITY;
sc.nr_reclaimed = 0;
sc.may_writepage = !laptop_mode;
@@ -2730,7 +2736,6 @@ loop_again:
order, sc.gfp_mask,
&nr_soft_scanned);
sc.nr_reclaimed += nr_soft_reclaimed;
- total_scanned += nr_soft_scanned;
/*
* We put equal pressure on every zone, unless
@@ -2765,7 +2770,6 @@ loop_again:
reclaim_state->reclaimed_slab = 0;
nr_slab = shrink_slab(&shrink, sc.nr_scanned, lru_pages);
sc.nr_reclaimed += reclaim_state->reclaimed_slab;
- total_scanned += sc.nr_scanned;
if (nr_slab == 0 && !zone_reclaimable(zone))
zone->all_unreclaimable = 1;
@@ -3188,9 +3192,9 @@ int kswapd_run(int nid)
if (IS_ERR(pgdat->kswapd)) {
/* failure at boot is fatal */
BUG_ON(system_state == SYSTEM_BOOTING);
- pgdat->kswapd = NULL;
pr_err("Failed to start kswapd on node %d\n", nid);
ret = PTR_ERR(pgdat->kswapd);
+ pgdat->kswapd = NULL;
}
return ret;
}