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| author | Dmitry Shmidt <dimitrysh@google.com> | 2017-01-09 10:12:25 -0800 |
|---|---|---|
| committer | Dmitry Shmidt <dimitrysh@google.com> | 2017-01-09 10:12:25 -0800 |
| commit | 712517177d3f0df8ff8e402241d0f5a69208a95b (patch) | |
| tree | c20bb1beb8dfa95dd6023cca2e16845861742c47 /mm/vmscan.c | |
| parent | aceae9be74c70f993ddd8d6a157f1a256591c43f (diff) | |
| parent | a3edc7b2e537e36bb26c94fa9efcc249ef3a5862 (diff) | |
Merge tag 'v4.4.40' into android-4.4.y
This is the 4.4.40 stable release
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index de1c59d8daa3..bfc5050cbd01 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -277,6 +277,7 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, int nid = shrinkctl->nid; long batch_size = shrinker->batch ? shrinker->batch : SHRINK_BATCH; + long scanned = 0, next_deferred; freeable = shrinker->count_objects(shrinker, shrinkctl); if (freeable == 0) @@ -298,7 +299,9 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, pr_err("shrink_slab: %pF negative objects to delete nr=%ld\n", shrinker->scan_objects, total_scan); total_scan = freeable; - } + next_deferred = nr; + } else + next_deferred = total_scan; /* * We need to avoid excessive windup on filesystem shrinkers @@ -355,17 +358,22 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, count_vm_events(SLABS_SCANNED, nr_to_scan); total_scan -= nr_to_scan; + scanned += nr_to_scan; cond_resched(); } + if (next_deferred >= scanned) + next_deferred -= scanned; + else + next_deferred = 0; /* * move the unused scan count back into the shrinker in a * manner that handles concurrent updates. If we exhausted the * scan, there is no need to do an update. */ - if (total_scan > 0) - new_nr = atomic_long_add_return(total_scan, + if (next_deferred > 0) + new_nr = atomic_long_add_return(next_deferred, &shrinker->nr_deferred[nid]); else new_nr = atomic_long_read(&shrinker->nr_deferred[nid]); |