Re: [RESEND PATCH v3] iommu/iova: Optimize alloc_iova with rbtree_augmented

[Peng Zhang]

> https://lore.kernel.org/linux-iommu/2b0ca6254dd0102bf559b2a73e9b51da089afbe3.1663764627.git.robin.murphy@xxxxxxx/
I don't think this method solves the problem, because sometimes it's 
just that the allocation is very slow, it's not that it can't be allocated.

This is a test of the performance improvement of the network card by 
this patch:
https://lore.kernel.org/lkml/42909903-5b6c-efe8-9ed3-3ac012f1a421@xxxxxxxxxx/
At least this optimization makes sense.

The only downside of this optimization is that it is more complex, if 
you think it is difficult to maintain it, I can help maintain it.

Thanks,
Peng.