On 3/24/21 7:48 PM, Dong Kai wrote:
> commit 15b2219facad ("kernel: freezer should treat PF_IO_WORKER like
> PF_KTHREAD for freezing") is to fix the freezeing issue of IO threads
> by making the freezer not send them fake signals.
>
> Here live patching consistency model call klp_send_signals to wake up
> all tasks by send fake signal to all non-kthread which only check the
> PF_KTHREAD flag, so it still send signal to io threads which may lead to
> freezeing issue of io threads.
>
> Here we take the same fix action by treating PF_IO_WORKERS as PF_KTHREAD
> within klp_send_signal function.
Reviewed-by: Jens Axboe <axboe@xxxxxxxxx>
--
Jens Axboe
