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List:       drbd-dev
Subject:    Re: [Drbd-dev] [PATCH 01/10] block: make generic_make_request handle	arbitrarily sized bios
From:       Keith Busch <keith.busch () intel ! com>
Date:       2015-04-28 16:01:26
Message-ID: alpine.LNX.2.00.1504281546340.19844 () localhost ! lm ! intel ! com
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On Tue, 28 Apr 2015, Christoph Hellwig wrote:
> This seems to lack support for QUEUE_FLAG_SG_GAPS to work around
> the retarded PPR format in the NVMe driver.

Might strong words, sir! I'm missing the context here, but I'll say PRP
is much more efficient for h/w to process over SGL, and the requirement
comes from that h/w rather than the driver.
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