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-rw-r--r--block/blk-cgroup.c21
1 files changed, 21 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 88bdb73bd5e0..ac8370cb2515 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1143,11 +1143,32 @@ static int blkcg_can_attach(struct cgroup_subsys_state *css,
return ret;
}
+static void blkcg_bind(struct cgroup_subsys_state *root_css)
+{
+ int i;
+
+ mutex_lock(&blkcg_pol_mutex);
+
+ for (i = 0; i < BLKCG_MAX_POLS; i++) {
+ struct blkcg_policy *pol = blkcg_policy[i];
+ struct blkcg *blkcg;
+
+ if (!pol || !pol->cpd_bind_fn)
+ continue;
+
+ list_for_each_entry(blkcg, &all_blkcgs, all_blkcgs_node)
+ if (blkcg->cpd[pol->plid])
+ pol->cpd_bind_fn(blkcg->cpd[pol->plid]);
+ }
+ mutex_unlock(&blkcg_pol_mutex);
+}
+
struct cgroup_subsys io_cgrp_subsys = {
.css_alloc = blkcg_css_alloc,
.css_offline = blkcg_css_offline,
.css_free = blkcg_css_free,
.can_attach = blkcg_can_attach,
+ .bind = blkcg_bind,
.dfl_cftypes = blkcg_files,
.legacy_cftypes = blkcg_legacy_files,
.legacy_name = "blkio",