Re: [PATCH] livepatch: klp_send_signal should treat PF_IO_WORKER like PF_KTHREAD
From: Jens Axboe <axboe@kernel.dk>
Date: 2021-03-25 16:30:34
Also in:
lkml
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@kernel.dk> -- Jens Axboe