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Date: Mon, 10 Jun 2024 13:57:32 +0200
From: Christoph Hellwig <hch@lst.de>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>, Jens Axboe <axboe@kernel.dk>,
	Mike Snitzer <snitzer@kernel.org>,
	Mikulas Patocka <mpatocka@redhat.com>, Song Liu <song@kernel.org>,
	Yu Kuai <yukuai3@huawei.com>,
	Dan Williams <dan.j.williams@intel.com>,
	Vishal Verma <vishal.l.verma@intel.com>,
	Dave Jiang <dave.jiang@intel.com>, Ira Weiny <ira.weiny@intel.com>,
	Keith Busch <kbusch@kernel.org>, Sagi Grimberg <sagi@grimberg.me>,
	Chaitanya Kulkarni <kch@nvidia.com>, linux-block@vger.kernel.org,
	dm-devel@lists.linux.dev, linux-raid@vger.kernel.org,
	nvdimm@lists.linux.dev, linux-nvme@lists.infradead.org,
	linux-scsi@vger.kernel.org, Bart Van Assche <bvanassche@acm.org>,
	Kanchan Joshi <joshi.k@samsung.com>
Subject: Re: [PATCH 03/11] block: remove the BIP_IP_CHECKSUM flag
Message-ID: <20240610115732.GA19790@lst.de>
References: <20240607055912.3586772-1-hch@lst.de> <20240607055912.3586772-4-hch@lst.de> <yq1frtl3tmw.fsf@ca-mkp.ca.oracle.com>
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On Mon, Jun 10, 2024 at 07:56:00AM -0400, Martin K. Petersen wrote:
> > Remove the BIP_IP_CHECKSUM as sd can just look at the per-disk
> > checksum type instead.
> 
> This removes the ability to submit an individual I/O using a CRC instead
> of the IP checksum. There are cases which can't be expressed when
> the controller is operating in IP checksum mode.

Huh, how?