to #26323588

commit 214828962dead0c698f92b60ef97ce3c5fc2c8fe upstream.

Percpu reference counters should now be initialized with the
PERCPU_REF_ALLOW_REINIT in order to allow switching them to the
percpu mode from the atomic mode. This is exactly what
percpu_ref_reinit() called from __io_uring_register() is supposed to
do. So let's initialize percpu refcounters with the
PERCU_REF_ALLOW_REINIT flag.
Signed-off-by: NRoman Gushchin <guro@fb.com>
Acked-by: NTejun Heo <tj@kernel.org>
Signed-off-by: NDennis Zhou <dennis@kernel.org>
Signed-off-by: NJoseph Qi <joseph.qi@linux.alibaba.com>
Acked-by: NXiaoguang Wang <xiaoguang.wang@linux.alibaba.com>