io_uring: process requests completed with -EAGAIN on poll list
A request that completes with an -EAGAIN result after it has been added to the poll list, will not be removed from that list in io_do_iopoll() because the f_op->iopoll() will not succeed for that request. Maintain a retryable local list similar to the done list, and explicity reissue requests with an -EAGAIN result. Signed-off-by: NBijan Mottahedeh <bijan.mottahedeh@oracle.com> Signed-off-by: NJens Axboe <axboe@kernel.dk>
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