linux-kernel - Re: [PATCHv2 1/7] block: check for valid bio while splitting

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Message-ID: <aJ0JLLWrdfR5cRaW@kbusch-mbp>
Date: Wed, 13 Aug 2025 15:52:44 -0600
From: Keith Busch <kbusch@...nel.org>
To: "Martin K. Petersen" <martin.petersen@...cle.com>
Cc: Keith Busch <kbusch@...a.com>, linux-block@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	snitzer@...nel.org, axboe@...nel.dk, dw@...idwei.uk,
	brauner@...nel.org, Hannes Reinecke <hare@...e.de>
Subject: Re: [PATCHv2 1/7] block: check for valid bio while splitting

On Wed, Aug 13, 2025 at 05:23:47PM -0400, Martin K. Petersen wrote:
> dma_alignment defines the alignment of the DMA starting address. We
> don't have a dedicated queue limit for the transfer length granularity
> described by NVMe.

Darn, but thanks for confirming. I'll see if I can get by without
needing a new limit, or look into adding one if not. Worst case, I can
also let the device return the error, though I think we prefer not to
send an IO that we know should fail.