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-rw-r--r--fs/super.c9
1 files changed, 6 insertions, 3 deletions
diff --git a/fs/super.c b/fs/super.c
index 482b4071f4de..a89d6250bab8 100644
--- a/fs/super.c
+++ b/fs/super.c
@@ -91,14 +91,17 @@ static unsigned long super_cache_scan(struct shrinker *shrink,
/*
* prune the dcache first as the icache is pinned by it, then
* prune the icache, followed by the filesystem specific caches
+ *
+ * Ensure that we always scan at least one object - memcg kmem
+ * accounting uses this to fully empty the caches.
*/
- sc->nr_to_scan = dentries;
+ sc->nr_to_scan = dentries + 1;
freed = prune_dcache_sb(sb, sc);
- sc->nr_to_scan = inodes;
+ sc->nr_to_scan = inodes + 1;
freed += prune_icache_sb(sb, sc);
if (fs_objects) {
- sc->nr_to_scan = fs_objects;
+ sc->nr_to_scan = fs_objects + 1;
freed += sb->s_op->free_cached_objects(sb, sc);
}