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-rw-r--r--mm/vmscan.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index a1893c0..f525544 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -247,14 +247,18 @@ unsigned long shrink_slab(struct shrink_control *shrink,
list_for_each_entry(shrinker, &shrinker_list, list) {
unsigned long long delta;
- unsigned long total_scan;
- unsigned long max_pass;
+ long total_scan;
+ long max_pass;
int shrink_ret = 0;
long nr;
long new_nr;
long batch_size = shrinker->batch ? shrinker->batch
: SHRINK_BATCH;
+ max_pass = do_shrinker_shrink(shrinker, shrink, 0);
+ if (max_pass <= 0)
+ continue;
+
/*
* copy the current shrinker scan count into a local variable
* and zero it so that other concurrent shrinker invocations
@@ -265,7 +269,6 @@ unsigned long shrink_slab(struct shrink_control *shrink,
} while (cmpxchg(&shrinker->nr, nr, 0) != nr);
total_scan = nr;
- max_pass = do_shrinker_shrink(shrinker, shrink, 0);
delta = (4 * nr_pages_scanned) / shrinker->seeks;
delta *= max_pass;
do_div(delta, lru_pages + 1);
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