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Merge tag 'for-7.4/io_uring-dmabuf-20261023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux
Pull io_uring dma-buf support from Jens Axboe:
"This adds native dma-buf support to the I/O path, exposed through
io_uring. It's been in development for a while and should be ready to
go now.
- dma-buf file I/O infrastructure: a dma_buf_io_ctx created through a
new ->init_dma_buf_io_ctx file operation, and a dma_buf_io_map
holding the device DMA mapping. The two are split so a mapping can
be invalidated and re-established underneath a live context, with
the map counting in-flight requests so it can be torn down safely.
- A new iov_iter type for dmabuf maps, and a dma map backed bio type
for the block layer, with raw block device support on top.
- nvme-pci backend implementing dma-buf backed requests, including
SGL support.
- io_uring dmabuf backed registered buffers, built on a reworked
buffer registration structure with an extended update path, regbuf
import flags, an uncloneable flag for buffer types that can't be
cloned, and cloning support for registered dma-bufs"
* tag 'for-7.4/io_uring-dmabuf-20261023' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
io_uring/dma-buf: don't fail fixed buffers without dma-buf support
nvme-pci: detach dma-bufs only on removal
block: reject dma-bufs larger than 4GiB
io_uring/dma-buf: allow cloning registered dma-bufs
dma-buf-io: document dma_buf_io_init_map
dma-buf-io: fix typos in kernel docs
block: fix indention for dma-buf checks
io_uring/rsrc: add dmabuf backed registered buffers
io_uring/rsrc: add regbuf import flags
io_uring/rsrc: add uncloneable regbuf flag
io_uring/rsrc: extend buffer update
io_uring/rsrc: introduce buf registration structure
nvme-pci: add SGL support for the dmabuf path
nvme-pci: implement dma-buf backed requests
nvme-pci: rename nvme_pci_sgl_set_data to nvme_pci_dma_iter_set_sgl
block: add dma-buf support for raw bdev
block: introduce dma map backed bio type
block: always adjust bi_offset on bio_advance_iter
iov_iter: add iterator type for dmabuf maps
dma-buf: introduce initial file I/O infrastructure
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||
|---|---|---|
| .. | ||
| heaps | ||
| .kunitconfig | ||
| dma-buf-io.c | ||
| dma-buf-mapping.c | ||
| dma-buf.c | ||
| dma-fence-array.c | ||
| dma-fence-chain.c | ||
| dma-fence-unwrap.c | ||
| dma-fence.c | ||
| dma-heap.c | ||
| dma-resv.c | ||
| Kconfig | ||
| Makefile | ||
| st-dma-fence-chain.c | ||
| st-dma-fence-unwrap.c | ||
| st-dma-fence.c | ||
| st-dma-resv.c | ||
| sw_sync.c | ||
| sync_debug.c | ||
| sync_debug.h | ||
| sync_file.c | ||
| sync_trace.h | ||
| udmabuf.c | ||