[Devel] [PATCH VZ10 0/6] cgroup-v2/freezer: make container cgroups freezable

[Pavel Tikhomirov]

On 11/19/25 05:24, Konstantin Khorenko wrote:
> LGTM to first 5 patches.
> 
> + probably we need a test for this in kselftests?

I created a subtask for a kselftest https://virtuozzo.atlassian.net/browse/VSTOR-119676

> 
> -- 
> Best regards,
> 
> Konstantin Khorenko,
> Virtuozzo Linux Kernel Team
> 
> On 11/14/25 11:59, Pavel Tikhomirov wrote:
>> [1-3] Port unrelated mainstream fixes for racy freezer.
>> [4] Revert our hack for hang in ptrace, which does not look needed now.
>> [5] Allow cgroup-v2 freezer to be frozern while ignoring kernel threads.
>> [6] Support "unfreezable process" warning in cgroup-v2 freezer.
>>
>> https://virtuozzo.atlassian.net/browse/VSTOR-118578
>> Signed-off-by: Pavel Tikhomirov <ptikhomirov at virtuozzo.com>
>>
>> Chen Ridong (3):
>>    cgroup,freezer: fix incomplete freezing when attaching tasks
>>    sched,freezer: Remove unnecessary warning in __thaw_task
>>    Revert "cgroup_freezer: cgroup_freezing: Check if not frozen"
>>
>> Pavel Tikhomirov (3):
>>    Revert "kernel/freezer: don't freeze stopped & about to be ptraced
>>      task"
>>    cgroup-v2/freezer: allow freezing with kthreads
>>    cgroup-v2/freezer: Print information about unfreezable process
>>
>>   include/linux/cgroup-defs.h    |  10 +++
>>   include/linux/cgroup.h         |   3 +
>>   kernel/cgroup/cgroup.c         | 120 +++++++++++++++++++++++++++++++++
>>   kernel/cgroup/freezer.c        |  11 ++-
>>   kernel/cgroup/legacy_freezer.c |  47 +------------
>>   kernel/freezer.c               |  18 +----
>>   6 files changed, 147 insertions(+), 62 deletions(-)
>>
> 

-- 
Best regards, Pavel Tikhomirov
Senior Software Developer, Virtuozzo.