Re: [PATCH net-next v2] net: page_pool: use in_softirq() instead

[Felix Fietkau]

On 03.02.23 02:16, Qingfang DENG wrote:
> From: Qingfang DENG <qingfang.deng@xxxxxxxxxxxxxxx>
>
> We use BH context only for synchronization, so we don't care if it's
> actually serving softirq or not.
>
> As a side node, in case of threaded NAPI, in_serving_softirq() will
> return false because it's in process context with BH off, making
> page_pool_recycle_in_cache() unreachable.
>
> Signed-off-by: Qingfang DENG <qingfang.deng@xxxxxxxxxxxxxxx>
Tested-by: Felix Fietkau <nbd@xxxxxxxx>