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. Sorry for mis-sending noisy mails. 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
