Commit 7b53d598 authored by Pavel Begunkov's avatar Pavel Begunkov Committed by Jens Axboe

io_uring: fix overflowed reqs cancellation

Overflowed requests in io_uring_cancel_files() should be shed only of
inflight and overflowed refs. All other left references are owned by
someone else.

If refcount_sub_and_test() fails, it will go further and put put extra
ref, don't do that. Also, don't need to do io_wq_cancel_work()
for overflowed reqs, they will be let go shortly anyway.
Signed-off-by: default avatarPavel Begunkov <asml.silence@gmail.com>
Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent bfe68a22
......@@ -7449,10 +7449,11 @@ static void io_uring_cancel_files(struct io_ring_ctx *ctx,
finish_wait(&ctx->inflight_wait, &wait);
continue;
}
} else {
io_wq_cancel_work(ctx->io_wq, &cancel_req->work);
io_put_req(cancel_req);
}
io_wq_cancel_work(ctx->io_wq, &cancel_req->work);
io_put_req(cancel_req);
schedule();
finish_wait(&ctx->inflight_wait, &wait);
}
......
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