Re: [PATCH V2 11/16] block, bfq: reduce idling only in symmetric scenarios

From: Bart Van Assche
Date: Fri Mar 31 2017 - 11:20:49 EST

On Fri, 2017-03-31 at 14:47 +0200, Paolo Valente wrote:
> +       entity->weight_counter = kzalloc(sizeof(struct bfq_weight_counter),
> +                                        GFP_ATOMIC);
> +       entity->weight_counter->weight = entity->weight;

GFP_ATOMIC allocations are more likely to fail than GFP_KERNEL allocations.
What will happen if kzalloc() returns NULL?

Bart.