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/write in btrfs by using uring cmd. There was approximately 10 percent of performance improvements through benchmark. The benchmark code is in https://github.com/SidongYang/btrfs-encoded-io-test/blob/main/main.c ./main -l Elapsed time: 0.598997 seconds ./main -l -f Elapsed time: 0.540332 seconds v2: - don't export iou_vc, use bvec for btrfs - use io_is_compat for checking compat - reduce allocation/free for import fixed vec v3: - add iou_vec cache in io_uring_cmd and use it - also encoded write fixed supported Sidong Yang (3): io-uring/cmd: add iou_vec field for io_uring_cmd io-uring/cmd: introduce io_uring_cmd_import_fixed_vec btrfs: ioctl: introduce btrfs_uring_import_iovec() fs/btrfs/ioctl.c | 32 +++++++++++++++++++++-------- include/linux/io_uring/cmd.h | 15 ++++++++++++++ io_uring/io_uring.c | 2 +- io_uring/opdef.c | 1 + io_uring/uring_cmd.c | 39 ++++++++++++++++++++++++++++++++++++ io_uring/uring_cmd.h | 3 +++ 6 files changed, 83 insertions(+), 9 deletions(-) -- 2.43.0
