Re: [RFC PATCH 3/3] cpu-hotplug: Replace per-subsystem mutexes with get_online_cpus()

[Oleg Nesterov]

On 11/15, Gautham R Shenoy wrote:
>
> This patch converts the known per-subsystem mutexes to get_online_cpus
> put_online_cpus. It also eliminates the CPU_LOCK_ACQUIRE
> and CPU_LOCK_RELEASE hotplug notification events.
> 
> Signed-off-by: Gautham  R Shenoy <ego@xxxxxxxxxx>
> ---
>  include/linux/notifier.h |    4 +---
>  kernel/cpu.c             |    4 ----
>  kernel/sched.c           |   25 +++++++++----------------
>  kernel/workqueue.c       |   35 +++++++++++++++--------------------
>  mm/slab.c                |   18 +++++++++++-------

Can't really comment the changes outside the workqueue.c, but imho the
whole series is very good.

Oleg.

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