diff options
| author | Jens Axboe <axboe@kernel.dk> | 2022-05-27 10:55:07 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2022-07-24 18:39:12 -0600 |
| commit | b9ba8a4463cd78d0aee520c4bf2569820ac29929 (patch) | |
| tree | 7ffcd2042e9e3bec8f314b0e3b997cca4613b591 /include/uapi/linux/io_uring.h | |
| parent | d9b57aa3cfc792ccac6858376c017dbea6cb2872 (diff) | |
io_uring: add support for level triggered poll
By default, the POLL_ADD command does edge triggered poll - if we get
a non-zero mask on the initial poll attempt, we complete the request
successfully.
Support level triggered by always waiting for a notification, regardless
of whether or not the initial mask matches the file state.
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'include/uapi/linux/io_uring.h')
| -rw-r--r-- | include/uapi/linux/io_uring.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/io_uring.h b/include/uapi/linux/io_uring.h index 0ad3da28d2fc..4927bb69387a 100644 --- a/include/uapi/linux/io_uring.h +++ b/include/uapi/linux/io_uring.h @@ -229,10 +229,13 @@ enum io_uring_op { * * IORING_POLL_UPDATE Update existing poll request, matching * sqe->addr as the old user_data field. + * + * IORING_POLL_LEVEL Level triggered poll. */ #define IORING_POLL_ADD_MULTI (1U << 0) #define IORING_POLL_UPDATE_EVENTS (1U << 1) #define IORING_POLL_UPDATE_USER_DATA (1U << 2) +#define IORING_POLL_ADD_LEVEL (1U << 3) /* * ASYNC_CANCEL flags. |