Re: [RFC PATCH v1 5/9] freezer: set default freeze priority for PF_SUSPEND_TASK processes
From: Oleg Nesterov <oleg@redhat.com>
Date: 2025-08-08 14:41:22
Also in:
linux-fsdevel, linux-mm, linux-pm, lkml
On 08/07, Zihuan Zhang wrote:
quoted hunk ↗ jump to hunk
--- a/kernel/power/process.c +++ b/kernel/power/process.c@@ -147,6 +147,7 @@ int freeze_processes(void) pm_wakeup_clear(0); pm_freezing = true; + freeze_set_default_priority(current, FREEZE_PRIORITY_NEVER);
But why? Again, freeze_task() will return false anyway, this process is PF_SUSPEND_TASK.
quoted hunk ↗ jump to hunk
@@ -218,6 +219,7 @@ void thaw_processes(void) WARN_ON(!(curr->flags & PF_SUSPEND_TASK)); curr->flags &= ~PF_SUSPEND_TASK; + freeze_set_default_priority(current, FREEZE_PRIORITY_NORMAL); usermodehelper_enable();
What if current->freeze_priority was changed via /proc/pid/freeze_priority you add in 9/9 ? Oleg.