Re: [PATCH 7/7] mm/page_alloc: Replace local_lock with normal spinlock

[Yu Zhao]

On Mon, Jun 13, 2022 at 8:54 AM Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx> wrote:
...

> +#define pcpu_spin_trylock_irqsave(type, member, ptr, flags)            \
> +({                                                                     \
> +       type *_ret;                                                     \
> +       pcpu_task_pin();                                                \
> +       _ret = this_cpu_ptr(ptr);                                       \
> +       if (!spin_trylock_irqsave(&_ret->member, flags))                \
> +               _ret = NULL;                                            \

I'm getting "BUG: sleeping function called from invalid context" with
mm-everything-2022-06-14-19-05.

Perhaps missing a pcpu_task_unpin() here?

> +       _ret;                                                           \
> +})