If it is already on preloaded list, this means we have already setup this cset properly for migration. Let's skip this cset on this condition. Signed-off-by: Wei Yang <richard.weiyang@xxxxxxxxx> --- kernel/cgroup/cgroup.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/kernel/cgroup/cgroup.c b/kernel/cgroup/cgroup.c index 452a723d4a36..2cf729afe834 100644 --- a/kernel/cgroup/cgroup.c +++ b/kernel/cgroup/cgroup.c @@ -2648,11 +2648,11 @@ void cgroup_migrate_add_src(struct css_set *src_cset, if (src_cset->dead) return; - src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root); - if (!list_empty(&src_cset->mg_preload_node)) return; + src_cgrp = cset_cgroup_from_root(src_cset, dst_cgrp->root); + WARN_ON(src_cset->mg_src_cgrp); WARN_ON(src_cset->mg_dst_cgrp); WARN_ON(!list_empty(&src_cset->mg_tasks)); -- 2.33.1
