This series fixes the late dma_unmap crash for page pool first reported by Yonglong Liu in [0]. It is an alternative approach to the one submitted by Yunsheng Lin, most recently in [1]. The first two commits are small refactors of the page pool code, in preparation of the main change in patch 3. See the commit message of patch 3 for the details. -Toke [0] https://lore.kernel.org/lkml/8067f204-1380-4d37-8ffd-007fc6f26738@xxxxxxxxxx/T/ [1] https://lore.kernel.org/r/20250307092356.638242-1-linyunsheng@xxxxxxxxxx Signed-off-by: Toke Høiland-Jørgensen <toke@xxxxxxxxxx> --- Toke Høiland-Jørgensen (3): page_pool: Move pp_magic check into helper functions page_pool: Turn dma_sync and dma_sync_cpu fields into a bitmap page_pool: Track DMA-mapped pages and unmap them when destroying the pool drivers/net/ethernet/mellanox/mlx5/core/en/xdp.c | 4 +- include/net/page_pool/helpers.h | 6 +- include/net/page_pool/types.h | 54 +++++++++++++++- mm/page_alloc.c | 9 +-- net/core/devmem.c | 3 +- net/core/netmem_priv.h | 33 +++++++++- net/core/page_pool.c | 81 ++++++++++++++++++++---- net/core/skbuff.c | 16 +---- net/core/xdp.c | 4 +- 9 files changed, 164 insertions(+), 46 deletions(-) --- base-commit: 8ef890df4031121a94407c84659125cbccd3fdbe change-id: 20250310-page-pool-track-dma-0332343a460e
