On 2024/9/25 15:57, Yunsheng Lin wrote: > Patch 1 fix a possible time window problem for page_pool. > Patch 2 fix the kernel crash problem at iommu_get_dma_domain > reported in [1]. Hi, all Through the discussions, it seems there are some main concerns as below: 1. Semantics changing of supporting unlimited inflight pages to limited inflight pages that are as large as the pool_size of page_pool. 2. The overhead of finding available pool->items in page_pool_item_add(). Any other concerns I missed here? As it is unclear about the impact of the above concerns, which seemed to lead Paolo to suggest this patchset targetting net-next tree instead of net tree, so I am planning to target the net-next tree keeping the 'Fixes' tag for the next version, if there is any other opinion here, please let me know. Also, I still have the page_frag refactoring patchset pending in the nex-next, please let me know if I should wait for that patchset to be applied before sending this one to the net-next tree. >