Document the DMA-buf mapping lifetime negotiation

[PATCH 0/2] Document the DMA-buf mapping lifetime negotiation

Leon Romanovsky posted 2 patches 1 month ago

Download series mbox

Documentation/driver-api/dma-buf.rst    |  6 +++
Documentation/driver-api/pci/p2pdma.rst |  6 ++-
drivers/dma-buf/dma-buf.c               | 85 ++++++++++++++++++++++++++++++++-
3 files changed, 94 insertions(+), 3 deletions(-)

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[PATCH 0/2] Document the DMA-buf mapping lifetime negotiation

Posted by Leon Romanovsky 1 month ago

DMA-buf lets an exporter pin, move or revoke the backing storage under
an importer, and which of the three applies is decided by the optional
callbacks each side implements and by whether dma_buf_pin() succeeds.
Nothing in Documentation/ describes that, and the single reference to
the mechanism still names move_notify(), removed in v7.1.

Thanks

Signed-off-by: Leon Romanovsky <leonro@nvidia.com>
---
Leon Romanovsky (2):
      PCI/P2PDMA: Update DMABUF lifecycle docs after move_notify() rename
      dma-buf: Document how exporters and importers agree on mapping lifetime

 Documentation/driver-api/dma-buf.rst    |  6 +++
 Documentation/driver-api/pci/p2pdma.rst |  6 ++-
 drivers/dma-buf/dma-buf.c               | 85 ++++++++++++++++++++++++++++++++-
 3 files changed, 94 insertions(+), 3 deletions(-)
---
base-commit: 8049741ac93acd3a590dac070e12571fddf0e294
change-id: 20260820-document-dma-buf-3f8b41e32f57

Best regards,
--  
Leon Romanovsky <leonro@nvidia.com>