diff options
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 069bc202ffe..63c3cd454d1 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -925,6 +925,14 @@ struct cgroup_subsys blkio_cgrp_subsys = { .css_free = blkcg_css_free, .can_attach = blkcg_can_attach, .base_cftypes = blkcg_files, +#ifdef CONFIG_MEMCG + /* + * This ensures that, if available, memcg is automatically enabled + * together on the default hierarchy so that the owner cgroup can + * be retrieved from writeback pages. + */ + .depends_on = 1 << memory_cgrp_id, +#endif }; EXPORT_SYMBOL_GPL(blkio_cgrp_subsys); |