diff options
| author | Keith Busch <kbusch@kernel.org> | 2025-09-03 12:33:17 -0700 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2025-09-09 10:33:35 -0600 |
| commit | d57447ffb5fadffdba920f2fb933296fb6c5ff57 (patch) | |
| tree | dbd4a5c9aab4476d8e7420cae87090c767354775 /include/linux/blk-mq-dma.h | |
| parent | 05ceea5d3ec9a1b1d6858ffd4739fdb0ed1b8eaf (diff) | |
| download | linux-next-d57447ffb5fadffdba920f2fb933296fb6c5ff57.tar.gz linux-next-d57447ffb5fadffdba920f2fb933296fb6c5ff57.zip | |
blk-mq-dma: bring back p2p request flags
We only need to consider data and metadata dma mapping types separately.
The request and bio integrity payload have enough flag bits to
internally track the mapping type for each. Use these so the caller
doesn't need to track them, and provide separete request and integrity
helpers to the common code. This will make it easier to scale new
mappings, like the proposed MMIO attribute, without burdening the caller
to track such things.
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Leon Romanovsky <leonro@nvidia.com>
Signed-off-by: Keith Busch <kbusch@kernel.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/linux/blk-mq-dma.h')
| -rw-r--r-- | include/linux/blk-mq-dma.h | 11 |
1 files changed, 9 insertions, 2 deletions
diff --git a/include/linux/blk-mq-dma.h b/include/linux/blk-mq-dma.h index 0f45ea110ca1..51829958d872 100644 --- a/include/linux/blk-mq-dma.h +++ b/include/linux/blk-mq-dma.h @@ -43,7 +43,7 @@ static inline bool blk_rq_dma_map_coalesce(struct dma_iova_state *state) } /** - * blk_rq_dma_unmap - try to DMA unmap a request + * blk_dma_unmap - try to DMA unmap a request * @req: request to unmap * @dma_dev: device to unmap from * @state: DMA IOVA state @@ -53,7 +53,7 @@ static inline bool blk_rq_dma_map_coalesce(struct dma_iova_state *state) * Returns %false if the callers need to manually unmap every DMA segment * mapped using @iter or %true if no work is left to be done. */ -static inline bool blk_rq_dma_unmap(struct request *req, struct device *dma_dev, +static inline bool blk_dma_unmap(struct request *req, struct device *dma_dev, struct dma_iova_state *state, size_t mapped_len, bool is_p2p) { if (is_p2p) @@ -68,4 +68,11 @@ static inline bool blk_rq_dma_unmap(struct request *req, struct device *dma_dev, return !dma_need_unmap(dma_dev); } +static inline bool blk_rq_dma_unmap(struct request *req, struct device *dma_dev, + struct dma_iova_state *state, size_t mapped_len) +{ + return blk_dma_unmap(req, dma_dev, state, mapped_len, + req->cmd_flags & REQ_P2PDMA); +} + #endif /* BLK_MQ_DMA_H */ |