linux-kernel - [RFC PATCH v2 0/2] introduce io_uring_cmd_import_fixed

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Message-ID: <20250312130924.11402-1-sidong.yang@furiosa.ai>
Date: Wed, 12 Mar 2025 13:09:20 +0000
From: Sidong Yang <sidong.yang@...iosa.ai>
To: Jens Axboe <axboe@...nel.dk>,
	Pavel Begunkov <asml.silence@...il.com>,
	Josef Bacik <josef@...icpanda.com>,
	David Sterba <dsterba@...e.com>
Cc: Sidong Yang <sidong.yang@...iosa.ai>,
	io-uring@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-btrfs@...r.kernel.org
Subject: [RFC PATCH v2 0/2] introduce io_uring_cmd_import_fixed_vec

This patche series introduce io_uring_cmd_import_vec. With this function,
Multiple fixed buffer could be used in uring cmd. It's vectored version
for io_uring_cmd_import_fixed(). Also this patch series includes a usage
for new api for encoded read in btrfs by using uring cmd.

v2:
 - don't export iou_vc, use bvec for btrfs
 - use io_is_compat for checking compat
 - reduce allocation/free for import fixed vec
 
Sidong Yang (2):
  io_uring: cmd: introduce io_uring_cmd_import_fixed_vec
  btrfs: ioctl: use registered buffer for IORING_URING_CMD_FIXED

 fs/btrfs/ioctl.c             | 27 ++++++++++++++++++++++-----
 include/linux/io_uring/cmd.h | 14 ++++++++++++++
 io_uring/uring_cmd.c         | 31 +++++++++++++++++++++++++++++++
 3 files changed, 67 insertions(+), 5 deletions(-)

--
2.43.0