Re: [PATCH RESEND v2 2/5] dma-pool: allow user to disable atomic pool

[Christoph Hellwig]

On Tue, Dec 07, 2021 at 11:07:47AM +0800, Baoquan He wrote:
> In the current code, three atomic memory pools are always created,
> atomic_pool_kernel|dma|dma32, even though 'coherent_pool=0' is
> specified in kernel command line. In fact, atomic pool is only
> necessary when CONFIG_DMA_DIRECT_REMAP=y or mem_encrypt_active=y
> which are needed on few ARCHes.

And only these select the atomic pool, so it won't get created otherwise.
What problem are you trying to solve?