diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 15 | ||||
| -rw-r--r-- | mm/workingset.c | 2 |
2 files changed, 13 insertions, 4 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 8ea87586925e..28c9ae5633b9 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -474,9 +474,18 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, nr = atomic_long_xchg(&shrinker->nr_deferred[nid], 0); total_scan = nr; - delta = freeable >> priority; - delta *= 4; - do_div(delta, shrinker->seeks); + if (shrinker->seeks) { + delta = freeable >> priority; + delta *= 4; + do_div(delta, shrinker->seeks); + } else { + /* + * These objects don't require any IO to create. Trim + * them aggressively under memory pressure to keep + * them from causing refetches in the IO caches. + */ + delta = freeable / 2; + } /* * Make sure we apply some minimal pressure on default priority diff --git a/mm/workingset.c b/mm/workingset.c index 7e6ef312cea5..cbc13d4dfa79 100644 --- a/mm/workingset.c +++ b/mm/workingset.c @@ -534,7 +534,7 @@ static unsigned long scan_shadow_nodes(struct shrinker *shrinker, static struct shrinker workingset_shadow_shrinker = { .count_objects = count_shadow_nodes, .scan_objects = scan_shadow_nodes, - .seeks = DEFAULT_SEEKS, + .seeks = 0, /* ->count reports only fully expendable nodes */ .flags = SHRINKER_NUMA_AWARE | SHRINKER_MEMCG_AWARE, }; |