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io_uring/cancel: add IORING_ASYNC_CANCEL_USERDATA

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Add a flag to explicitly match on user_data in the request for
cancelation purposes. This is the default behavior if none of the
other match flags are set, but if we ALSO want to match on user_data,
then this flag can be set.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe
2023-06-23 10:33:11 -06:00
parent a30badf66d
commit 8165b56604
2 changed files with 14 additions and 6 deletions
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2
include/uapi/linux/io_uring.h
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@@ -299,11 +299,13 @@ enum io_uring_op {
* request 'user_data'
* IORING_ASYNC_CANCEL_ANY Match any request
* IORING_ASYNC_CANCEL_FD_FIXED 'fd' passed in is a fixed descriptor
* IORING_ASYNC_CANCEL_USERDATA Match on user_data, default for no other key
*/
#define IORING_ASYNC_CANCEL_ALL (1U << 0)
#define IORING_ASYNC_CANCEL_FD (1U << 1)
#define IORING_ASYNC_CANCEL_ANY (1U << 2)
#define IORING_ASYNC_CANCEL_FD_FIXED (1U << 3)
#define IORING_ASYNC_CANCEL_USERDATA (1U << 4)
/*
* send/sendmsg and recv/recvmsg flags (sqe->ioprio)