[PATCH v16 00/11] Block write streams with nvme fdp

[Kanchan Joshi]

The series enables FDP support for block IO.
The patches
- Add ki_write_stream in kiocb (patch 1), and bi_write_stream in bio (patch 2).
- Introduce two new queue limits - max_write_streams and
  write_stream_granularity (patch 3, 4)
- Pass write stream (either from kiocb, or from inode write hints)
  for block device (patch 5)
- Per I/O write stream interface in io_uring (patch 6)
- Register nvme fdp via write stream queue limits (patch 10, 11)

Changes since v15:
- Merged to latest for-next (Jens)

Previous discussions:
v15: https://lore.kernel.org/linux-nvme/20250203184129.1829324-1-kbusch@meta.com/T/#u
v14: https://lore.kernel.org/linux-nvme/20241211183514.64070-1-kbusch@meta.com/T/#u
v13: https://lore.kernel.org/linux-nvme/20241210194722.1905732-1-kbusch@meta.com/T/#u
v12: https://lore.kernel.org/linux-nvme/20241206221801.790690-1-kbusch@meta.com/T/#u
v11: https://lore.kernel.org/linux-nvme/20241206015308.3342386-1-kbusch@meta.com/T/#u
v10: https://lore.kernel.org/linux-nvme/20241029151922.459139-1-kbusch@meta.com/T/#u
v9: https://lore.kernel.org/linux-nvme/20241025213645.3464331-1-kbusch@meta.com/T/#u
v8: https://lore.kernel.org/linux-nvme/20241017160937.2283225-1-kbusch@meta.com/T/#u
v7: https://lore.kernel.org/linux-nvme/20240930181305.17286-1-joshi.k@samsung.com/T/#u
v6: https://lore.kernel.org/linux-nvme/20240924092457.7846-1-joshi.k@samsung.com/T/#u
v5: https://lore.kernel.org/linux-nvme/20240910150200.6589-1-joshi.k@samsung.com/T/#u
v4: https://lore.kernel.org/linux-nvme/20240826170606.255718-1-joshi.k@samsung.com/T/#u
v3: https://lore.kernel.org/linux-nvme/20240702102619.164170-1-joshi.k@samsung.com/T/#u
v2: https://lore.kernel.org/linux-nvme/20240528150233.55562-1-joshi.k@samsung.com/T/#u
v1: https://lore.kernel.org/linux-nvme/20240510134015.29717-1-joshi.k@samsung.com/T/#u


Christoph Hellwig (7):
  fs: add a write stream field to the kiocb
  block: add a bi_write_stream field
  block: introduce a write_stream_granularity queue limit
  block: expose write streams for block device nodes
  nvme: add a nvme_get_log_lsi helper
  nvme: pass a void pointer to nvme_get/set_features for the result
  nvme: add FDP definitions

Keith Busch (4):
  block: introduce max_write_streams queue limit
  io_uring: enable per-io write streams
  nvme: register fdp parameters with the block layer
  nvme: use fdp streams if write stream is provided

 Documentation/ABI/stable/sysfs-block |  15 +++
 block/bio.c                          |   2 +
 block/blk-crypto-fallback.c          |   1 +
 block/blk-merge.c                    |   4 +
 block/blk-sysfs.c                    |   6 +
 block/fops.c                         |  23 ++++
 drivers/nvme/host/core.c             | 191 ++++++++++++++++++++++++++-
 drivers/nvme/host/nvme.h             |   7 +-
 include/linux/blk_types.h            |   1 +
 include/linux/blkdev.h               |  10 ++
 include/linux/fs.h                   |   1 +
 include/linux/nvme.h                 |  77 +++++++++++
 include/uapi/linux/io_uring.h        |   4 +
 io_uring/io_uring.c                  |   2 +
 io_uring/rw.c                        |   1 +
 15 files changed, 339 insertions(+), 6 deletions(-)


base-commit: e6d9dcfdc0c53b87cfe86163bfbd14f6457ef2b7
-- 
2.25.1