io_uring: allow IORING_OP_ASYNC_CANCEL with 'fd' key

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Currently sqe->addr must contain the user_data of the request being
canceled. Introduce the IORING_ASYNC_CANCEL_FD flag, which tells the
kernel that we're keying off the file fd instead for cancelation. This
allows canceling any request that a) uses a file, and b) was assigned the
file based on the value being passed in.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
Link: https://lore.kernel.org/r/20220418164402.75259-5-axboe@kernel.dk

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Jens Axboe 2022-04-18 10:44:01 -06:00

parent 8e29da69fe

commit 4bf94615b8

2 changed files with 63 additions and 7 deletions

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67

fs/io_uring.c

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3

include/uapi/linux/io_uring.h

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