diff options
Diffstat (limited to 'linux/shrinker.c')
| -rw-r--r-- | linux/shrinker.c | 27 |
1 files changed, 25 insertions, 2 deletions
diff --git a/linux/shrinker.c b/linux/shrinker.c index f6c979aa..876c1bae 100644 --- a/linux/shrinker.c +++ b/linux/shrinker.c @@ -65,7 +65,24 @@ static struct meminfo read_meminfo(void) return ret; } -void run_shrinkers(void) +static void run_shrinkers_allocation_failed(gfp_t gfp_mask) +{ + struct shrinker *shrinker; + + mutex_lock(&shrinker_lock); + list_for_each_entry(shrinker, &shrinker_list, list) { + struct shrink_control sc = { .gfp_mask = gfp_mask, }; + + unsigned long have = shrinker->count_objects(shrinker, &sc); + + sc.nr_to_scan = have / 8; + + shrinker->scan_objects(shrinker, &sc); + } + mutex_unlock(&shrinker_lock); +} + +void run_shrinkers(gfp_t gfp_mask, bool allocation_failed) { struct shrinker *shrinker; struct meminfo info; @@ -75,6 +92,11 @@ void run_shrinkers(void) if (list_empty(&shrinker_list)) return; + if (allocation_failed) { + run_shrinkers_allocation_failed(gfp_mask); + return; + } + info = read_meminfo(); if (info.total && info.available) { @@ -92,7 +114,8 @@ void run_shrinkers(void) mutex_lock(&shrinker_lock); list_for_each_entry(shrinker, &shrinker_list, list) { struct shrink_control sc = { - .nr_to_scan = want_shrink >> PAGE_SHIFT + .gfp_mask = gfp_mask, + .nr_to_scan = want_shrink >> PAGE_SHIFT }; shrinker->scan_objects(shrinker, &sc); |