[PATCH RFC v4 0/3] fix two bugs related to page_pool

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To: <davem@xxxxxxxxxxxxx>, <kuba@xxxxxxxxxx>, <pabeni@xxxxxxxxxx>
Subject: [PATCH RFC v4 0/3] fix two bugs related to page_pool
From: Yunsheng Lin <linyunsheng@xxxxxxxxxx>
Date: Wed, 20 Nov 2024 18:34:52 +0800
Cc: <liuyonglong@xxxxxxxxxx>, <fanghaiqing@xxxxxxxxxx>, <zhangkun09@xxxxxxxxxx>, Yunsheng Lin <linyunsheng@xxxxxxxxxx>, Alexander Lobakin <aleksander.lobakin@xxxxxxxxx>, Robin Murphy <robin.murphy@xxxxxxx>, Alexander Duyck <alexander.duyck@xxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, IOMMU <iommu@xxxxxxxxxxxxxxx>, MM <linux-mm@xxxxxxxxx>

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] using scanning.
Patch 3 avoid calling dma sync API after driver has already unbound.

Follow-Ups:
- [PATCH RFC v4 3/3] page_pool: skip dma sync operation for inflight pages
  - From: Yunsheng Lin

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