[PATCHv4 0/4] block integrity: directly map user space addresses

[Keith Busch <kbusch@meta.com>]

From: Keith Busch <kbusch@kernel.org>

Handling passthrough metadata ("integrity") today introduces overhead
and complications that we can avoid if we just map user space addresses
directly. This patch series implements that, falling back to a kernel
bounce buffer if necessary.

v3->v4:

  Code organization suggestions (Jens, Christoph)

  Spelling and unnecessary punctionation (Anuj)

  Open code the final user page unpin (Ming)

  Eliminate another allocation for the bounce copy by moving the bvec
  into the bip rather than just a pointer to it (me)

Keith Busch (4):
  block: bio-integrity: directly map user buffers
  nvme: use bio_integrity_map_user
  iouring: remove IORING_URING_CMD_POLLED
  io_uring: remove uring_cmd cookie

 block/bio-integrity.c     | 203 ++++++++++++++++++++++++++++++++++++++
 drivers/nvme/host/ioctl.c | 197 ++++++------------------------------
 include/linux/bio.h       |   9 ++
 include/linux/io_uring.h  |   9 +-
 io_uring/uring_cmd.c      |   1 -
 5 files changed, 243 insertions(+), 176 deletions(-)

-- 
2.34.1