io_uring/cmd: let cmds to know about dying task

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When the taks that submitted a request is dying, a task work for that
request might get run by a kernel thread or even worse by a half
dismantled task. We can't just cancel the task work without running the
callback as the cmd might need to do some clean up, so pass a flag
instead. If set, it's not safe to access any task resources and the
callback is expected to cancel the cmd ASAP.

Reviewed-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Pavel Begunkov <asml.silence@gmail.com>
Signed-off-by: David Sterba <dsterba@suse.com>

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Pavel Begunkov 2024-11-04 16:12:04 +00:00 • committed by David Sterba

parent 1cc86aeada

commit df3b8ca604

2 changed files with 6 additions and 1 deletions

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1

include/linux/io_uring_types.h

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6

io_uring/uring_cmd.c

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