[SPDK] Any limitation on the number of inflight blob io requests?

Hi, All

Is there any limitation on the number of inflight blob io requests? I’m asking because we hit a problem like consecutively submitting more than 1000 blob reads (spdk_blob_io_read() calls), an ENOMEM error will be observed on the last read completion callback. Please be aware that’s just my speculation after reading some debug log, so the error isn’t necessary from SPDK, and our engineer is working on reproducer to narrow down the problem now, at the same time, I’d like to find out if there is any hard limitation on the number of inflight io requests by design?

Thanks
-Niu