SHRINKER_NONSLAB
compr_pool.shrinker = shrinker_alloc(SHRINKER_NONSLAB, "btrfs-compr-pages");
mp->m_inodegc_shrinker = shrinker_alloc(SHRINKER_NONSLAB,
if (mem_cgroup_kmem_disabled() && !(shrinker->flags & SHRINKER_NONSLAB))
!(shrinker->flags & SHRINKER_NONSLAB)) {