Increase the number of inflight commands.

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Hi Nicholas,

Using a very fast initiator I've found that I can never send more than 16 commands to LIO target before the window is closed. (I have counters for both inflight requests and the reason for not sending requests).
Using TGT target I can send more commands a thus get higher throughput.
I want to increase this number but increasing the "TA_DEFAULT_CMDSN_DEPTH" from 16 to 128 didn't help, so I guess this is not the right constant (BTW is there a module parameter?).

Please advice.

Best regards,

S.P.

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