diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 12 |
1 files changed, 9 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 2aa3cb760189..8199e1b9a204 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -456,8 +456,8 @@ static unsigned long do_shrink_slab(struct shrink_control *shrinkctl, long scanned = 0, next_deferred; freeable = shrinker->count_objects(shrinker, shrinkctl); - if (freeable == 0) - return 0; + if (freeable == 0 || freeable == SHRINK_EMPTY) + return freeable; /* * copy the current shrinker scan count into a local variable @@ -596,6 +596,8 @@ static unsigned long shrink_slab_memcg(gfp_t gfp_mask, int nid, continue; ret = do_shrink_slab(&sc, shrinker, priority); + if (ret == SHRINK_EMPTY) + ret = 0; freed += ret; if (rwsem_is_contended(&shrinker_rwsem)) { @@ -641,6 +643,7 @@ static unsigned long shrink_slab(gfp_t gfp_mask, int nid, { struct shrinker *shrinker; unsigned long freed = 0; + int ret; if (!mem_cgroup_is_root(memcg)) return shrink_slab_memcg(gfp_mask, nid, memcg, priority); @@ -658,7 +661,10 @@ static unsigned long shrink_slab(gfp_t gfp_mask, int nid, if (!(shrinker->flags & SHRINKER_NUMA_AWARE)) sc.nid = 0; - freed += do_shrink_slab(&sc, shrinker, priority); + ret = do_shrink_slab(&sc, shrinker, priority); + if (ret == SHRINK_EMPTY) + ret = 0; + freed += ret; /* * Bail out if someone want to register a new shrinker to * prevent the regsitration from being stalled for long periods |