linux-kernel - Re: [PATCH v7 01/12] iova: Export alloc_iova

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Date:   Wed, 26 May 2021 10:36:10 +0800
From:   Jason Wang <jasowang@...hat.com>
To:     Xie Yongji <xieyongji@...edance.com>, mst@...hat.com,
        stefanha@...hat.com, sgarzare@...hat.com, parav@...dia.com,
        hch@...radead.org, christian.brauner@...onical.com,
        rdunlap@...radead.org, willy@...radead.org,
        viro@...iv.linux.org.uk, axboe@...nel.dk, bcrl@...ck.org,
        corbet@....net, mika.penttila@...tfour.com,
        dan.carpenter@...cle.com, joro@...tes.org
Cc:     virtualization@...ts.linux-foundation.org, netdev@...r.kernel.org,
        kvm@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 01/12] iova: Export alloc_iova_fast()


在 2021/5/17 下午5:55, Xie Yongji 写道:
> Export alloc_iova_fast() so that some modules can use it
> to improve iova allocation efficiency.
>
> Signed-off-by: Xie Yongji <xieyongji@...edance.com>
> ---
>   drivers/iommu/iova.c | 1 +
>   1 file changed, 1 insertion(+)
>
> diff --git a/drivers/iommu/iova.c b/drivers/iommu/iova.c
> index e6e2fa85271c..317eef64ffef 100644
> --- a/drivers/iommu/iova.c
> +++ b/drivers/iommu/iova.c
> @@ -450,6 +450,7 @@ alloc_iova_fast(struct iova_domain *iovad, unsigned long size,
>   
>   	return new_iova->pfn_lo;
>   }
> +EXPORT_SYMBOL_GPL(alloc_iova_fast);
>   
>   /**
>    * free_iova_fast - free iova pfn range into rcache


Interesting, do we need export free_iova_fast() as well?

Thanks