diff options
| author |   Anuj Gupta <anuj20.g@samsung.com> | 2022-09-30 11:57:39 +0530 |
|---|---|---|
| committer |   Jens Axboe <axboe@kernel.dk> | 2022-09-30 07:50:59 -0600 |
| commit | 9cda70f622cdcf049521a9c2886e5fd8a90a0591 (patch) | |
| tree | 4b56fa2929bfb24a0211c20e561a55453c041878 /include/uapi/linux | |
| parent | io_uring: add io_uring_cmd_import_fixed (diff) | |
| download | linux-dev-9cda70f622cdcf049521a9c2886e5fd8a90a0591.tar.xz linux-dev-9cda70f622cdcf049521a9c2886e5fd8a90a0591.zip | |
io_uring: introduce fixed buffer support for io_uring_cmd
Add IORING_URING_CMD_FIXED flag that is to be used for sending io_uring
command with previously registered buffers. User-space passes the buffer
index in sqe->buf_index, same as done in read/write variants that uses
fixed buffers.
Signed-off-by: Anuj Gupta <anuj20.g@samsung.com>
Signed-off-by: Kanchan Joshi <joshi.k@samsung.com>
Link: https://lore.kernel.org/r/20220930062749.152261-3-anuj20.g@samsung.com
[axboe: shuffle valid flags check before acting on it]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 92f29d9505a6..ab7458033ee3 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -56,6 +56,7 @@ struct io_uring_sqe { __u32 hardlink_flags; __u32 xattr_flags; __u32 msg_ring_flags; + __u32 uring_cmd_flags; }; __u64 user_data; /* data to be passed back at completion time */ /* pack this to avoid bogus arm OABI complaints */ @@ -220,6 +221,14 @@ enum io_uring_op { }; /* + * sqe->uring_cmd_flags + * IORING_URING_CMD_FIXED use registered buffer; pass thig flag + * along with setting sqe->buf_index. + */ +#define IORING_URING_CMD_FIXED (1U << 0) + + +/* * sqe->fsync_flags */ #define IORING_FSYNC_DATASYNC (1U << 0) |