On Wed, May 26, 2021 at 10:36 AM Jason Wang [off-list ref] wrote:

在 2021/5/17 下午5:55, Xie Yongji 写道:

quoted

Export alloc_iova_fast() so that some modules can use it
to improve iova allocation efficiency.

Signed-off-by: Xie Yongji <redacted>
---
  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?

Oh, yes. I missed this commit 6e1ea50a06 ("iommu: Stop exporting
free_iova_fast()"). Will rebase on the newest kernel tree.

Thanks,
Yongji