26 Feb
2016
26 Feb
'16
8:15 p.m.
On Fri, 26 Feb 2016 11:59:40 -0800 "Shi, Yang" yang.shi@linaro.org wrote:
BTW, it sounds this is not the only point where kernfs_node could be updated, __kernfs_remove should need synchronize_sched too.
Question is, can the kernfs of a cgroup be removed while the cgroup is still active?
I don't see the kernfs_rename_lock being held anywhere in that remove. If it can be an issue there with this patch, then it's an issue today, because the kernfs_mutex is not held by the tracepoint.
-- Steve