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SubjectRe: [PATCH] introduce task cgroup v2
I guess you didn't notice this comment ? :)

>> --- a/kernel/fork.c
>> > +++ b/kernel/fork.c
>> > @@ -54,6 +54,7 @@
>> > #include <linux/tty.h>
>> > #include <linux/proc_fs.h>
>> > #include <linux/blkdev.h>
>> > +#include <linux/cgroup_task.h>
>> >
>> > #include <asm/pgtable.h>
>> > #include <asm/pgalloc.h>
>> > @@ -920,6 +921,8 @@ static struct task_struct *copy_process(
>> > p->user != current->nsproxy->user_ns->root_user)
>> > goto bad_fork_free;
>> > }
>> > + if (task_cgroup_can_fork(p))
>> > + goto bad_fork_free;
>
> If task_cgroup_can_fork() returns 0, but copy_process() fails afterwords,
> taskcg->nr_tasks will be in a wrong state.
>



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