commit d3dc04cd81e0eaf50b2d09ab051a13300e587439
author Jens Axboe <axboe@kernel.dk> Thu Mar 25 18:22:11 2021 -0600
committer Jens Axboe <axboe@kernel.dk> Sat Mar 27 14:09:10 2021 -0600
tree 21b780724bd9872ddcb6382729b145e3f3aed4bd
parent e8b33b8cfafcfcef287ae4c0f23a173bfcf617f3

Revert "kernel: freezer should treat PF_IO_WORKER like PF_KTHREAD for freezing"

This reverts commit 15b2219facadec583c24523eed40fa45865f859f.

Before IO threads accepted signals, the freezer using take signals to wake
up an IO thread would cause them to loop without any way to clear the
pending signal. That is no longer the case, so stop special casing
PF_IO_WORKER in the freezer.

Signed-off-by: Jens Axboe <axboe@kernel.dk>

kernel/freezer.c

diff --git a/kernel/freezer.c b/kernel/freezer.c
index 1a2d57d..dc520f0 100644
--- a/kernel/freezer.c
+++ b/kernel/freezer.c
@@ -134,7 +134,7 @@ bool freeze_task(struct task_struct *p)
 		return false;
 	}
 
-	if (!(p->flags & (PF_KTHREAD | PF_IO_WORKER)))
+	if (!(p->flags & PF_KTHREAD))
 		fake_signal_wake_up(p);
 	else
 		wake_up_state(p, TASK_INTERRUPTIBLE);