From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Max Gurtovoy <maxg@mellanox.com>
Cc: axboe@kernel.dk, sagi@grimberg.me, martin.petersen@oracle.com,
shlomin@mellanox.com, israelr@mellanox.com,
vladimirk@mellanox.com, linux-nvme@lists.infradead.org,
idanb@mellanox.com, oren@mellanox.com, kbusch@kernel.org,
hch@lst.de
Subject: Re: [PATCH 13/15] nvmet: Add metadata/T10-PI support
Date: Wed, 08 Jan 2020 22:24:46 -0500 [thread overview]
Message-ID: <yq1sgkpxqf5.fsf@oracle.com> (raw)
In-Reply-To: <20200106133736.123038-15-maxg@mellanox.com> (Max Gurtovoy's message of "Mon, 6 Jan 2020 15:37:34 +0200")
Max,
> - /* no limit on data transfer sizes for now */
> - id->mdts = 0;
> + /* Limit MDTS for metadata capable controllers (assume mpsmin is 4k) */
> + id->mdts = ctrl->pi_support ? ilog2(NVMET_T10_PI_MAX_KB_SZ >> 2) : 0;
[...]
> +#define NVMET_T10_PI_MAX_KB_SZ 128
Where does this limit come from?
--
Martin K. Petersen Oracle Linux Engineering
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linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme
next prev parent reply other threads:[~2020-01-09 3:25 UTC|newest]
Thread overview: 44+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-01-06 13:37 [PATCH 00/15 V3] nvme-rdma/nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-01-06 13:37 ` [PATCH] nvme-cli/fabrics: Add pi_enable param to connect cmd Max Gurtovoy
2020-01-06 13:37 ` [PATCH 01/15] nvme: Introduce namespace features flag Max Gurtovoy
2020-01-07 18:07 ` Keith Busch
2020-01-08 12:00 ` Max Gurtovoy
2020-01-09 3:11 ` Martin K. Petersen
2020-01-09 10:38 ` Max Gurtovoy
2020-01-09 16:26 ` Keith Busch
2020-01-12 9:40 ` Max Gurtovoy
2020-01-13 20:31 ` Keith Busch
2020-01-14 16:04 ` Max Gurtovoy
2020-01-12 9:40 ` Max Gurtovoy
2020-01-06 13:37 ` [PATCH 02/15] nvme: Enforce extended LBA format for fabrics metadata Max Gurtovoy
2020-01-16 23:53 ` James Smart
2020-01-19 11:20 ` Max Gurtovoy
2020-01-21 17:40 ` James Smart
2020-01-06 13:37 ` [PATCH 03/15] nvme: Introduce max_integrity_segments ctrl attribute Max Gurtovoy
2020-01-09 3:12 ` Martin K. Petersen
2020-01-06 13:37 ` [PATCH 04/15] nvme-fabrics: Allow user enabling metadata/T10-PI support Max Gurtovoy
2020-01-06 13:37 ` [PATCH 05/15] nvme: Introduce NVME_INLINE_PROT_SG_CNT Max Gurtovoy
2020-01-09 3:13 ` Martin K. Petersen
2020-01-06 13:37 ` [PATCH 06/15] nvme-rdma: Introduce nvme_rdma_sgl structure Max Gurtovoy
2020-01-06 13:37 ` [PATCH 07/15] nvme-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-01-06 13:37 ` [PATCH 08/15] nvmet: Prepare metadata request Max Gurtovoy
2020-01-06 13:37 ` [PATCH 09/15] nvmet: Add metadata characteristics for a namespace Max Gurtovoy
2020-01-09 3:16 ` Martin K. Petersen
2020-01-06 13:37 ` [PATCH 10/15] nvmet: Rename nvmet_rw_len to nvmet_rw_data_len Max Gurtovoy
2020-01-09 3:17 ` Martin K. Petersen
2020-01-06 13:37 ` [PATCH 11/15] nvmet: Rename nvmet_check_data_len to nvmet_check_transfer_len Max Gurtovoy
2020-01-09 3:19 ` Martin K. Petersen
2020-01-06 13:37 ` [PATCH 12/15] nvme: Add Metadata Capabilities enumerations Max Gurtovoy
2020-01-06 13:37 ` [PATCH 13/15] nvmet: Add metadata/T10-PI support Max Gurtovoy
2020-01-09 3:24 ` Martin K. Petersen [this message]
2020-01-27 17:17 ` Max Gurtovoy
2020-01-29 2:32 ` Martin K. Petersen
2020-01-17 16:46 ` James Smart
2020-01-19 13:47 ` Max Gurtovoy
2020-01-06 13:37 ` [PATCH 14/15] nvmet: Add metadata support for block devices Max Gurtovoy
2020-01-06 13:37 ` [PATCH 15/15] nvmet-rdma: Add metadata/T10-PI support Max Gurtovoy
2020-01-09 3:29 ` Martin K. Petersen
-- strict thread matches above, loose matches on Subject: below --
2020-04-28 13:11 [PATCH 00/15 V6] nvme-rdma/nvmet-rdma: " Max Gurtovoy
2020-04-28 13:11 ` [PATCH 13/15] nvmet: add " Max Gurtovoy
2020-05-01 15:58 ` Christoph Hellwig
2020-05-01 16:19 ` Christoph Hellwig
2019-11-05 16:20 [PATCH 00/15] nvme-rdma/nvmet-rdma: Add " Max Gurtovoy
2019-11-05 16:20 ` [PATCH 13/15] nvmet: " Max Gurtovoy
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