From: Damien Le Moal <Damien.LeMoal@wdc.com>
To: Christoph Hellwig <hch@lst.de>,
"linux-nvme@lists.infradead.org" <linux-nvme@lists.infradead.org>
Cc: Keith Busch <kbusch@kernel.org>, Jens Axboe <axboe@kernel.dk>,
Sagi Grimberg <sagi@grimberg.me>
Subject: Re: [PATCH 07/20] nvme: lift the check for an unallocated namespace into nvme_identify_ns
Date: Mon, 28 Sep 2020 14:27:37 +0000 [thread overview]
Message-ID: <CY4PR04MB375113A310FAD26E94323EB7E7350@CY4PR04MB3751.namprd04.prod.outlook.com> (raw)
In-Reply-To: 20200928123502.435373-8-hch@lst.de
On 2020/09/28 21:35, Christoph Hellwig wrote:
> Move the check from the two callers into the common helper.
>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> drivers/nvme/host/core.c | 17 ++++++++---------
> 1 file changed, 8 insertions(+), 9 deletions(-)
>
> diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
> index fede487f6e043f..7b1423c7e7fc58 100644
> --- a/drivers/nvme/host/core.c
> +++ b/drivers/nvme/host/core.c
> @@ -1381,9 +1381,16 @@ static int nvme_identify_ns(struct nvme_ctrl *ctrl,
> error = nvme_submit_sync_cmd(ctrl->admin_q, &c, *id, sizeof(**id));
> if (error) {
> dev_warn(ctrl->device, "Identify namespace failed (%d)\n", error);
> - kfree(*id);
> + goto out_free_id;
> }
>
> + error = -ENODEV;
You could move this inside the if.
> + if ((*id)->ncap == 0) /* namespace not allocated or attached */
> + goto out_free_id;
> + return 0;
> +
> +out_free_id:
> + kfree(*id);
> return error;
> }
>
> @@ -2169,11 +2176,6 @@ static int nvme_validate_ns(struct nvme_ns *ns)
> if (ret)
> goto out;
>
> - if (id->ncap == 0) {
> - ret = -ENODEV;
> - goto free_id;
> - }
> -
> ret = nvme_report_ns_ids(ctrl, ns->head->ns_id, id, &ids);
> if (ret)
> goto free_id;
> @@ -3913,9 +3915,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
> if (ret)
> goto out_free_queue;
>
> - if (id->ncap == 0) /* no namespace (legacy quirk) */
> - goto out_free_id;
There is a call to nvme_identify_ns() above this, and I guess it is OK to assume
that that function will never return success if the ns cap is 0, right ?
If so, then this change looks OK.
> -
> ret = nvme_init_ns_head(ns, nsid, id);
> if (ret)
> goto out_free_id;
>
--
Damien Le Moal
Western Digital Research
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next prev parent reply other threads:[~2020-09-28 14:27 UTC|newest]
Thread overview: 90+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-28 12:34 refactor the nvme scanning and validation code Christoph Hellwig
2020-09-28 12:34 ` [PATCH 01/20] block: optimize blk_queue_zoned_model for !CONFIG_BLK_DEV_ZONED Christoph Hellwig
2020-09-28 14:11 ` Damien Le Moal
2020-09-29 8:29 ` Sagi Grimberg
2020-09-29 18:25 ` Christoph Hellwig
2020-09-29 21:12 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 02/20] nvme: fix initialization of the zone bitmaps Christoph Hellwig
2020-09-28 14:13 ` Damien Le Moal
2020-09-28 14:16 ` Damien Le Moal
2020-09-28 14:26 ` Christoph Hellwig
2020-09-29 21:27 ` Keith Busch
2020-09-28 12:34 ` [PATCH 03/20] nvme: remove the disk argument to nvme_update_zone_info Christoph Hellwig
2020-09-28 14:17 ` Damien Le Moal
2020-09-29 8:32 ` Sagi Grimberg
2020-09-29 21:15 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 04/20] nvme: rename nvme_validate_ns to nvme_validate_or_alloc_ns Christoph Hellwig
2020-09-28 14:19 ` Damien Le Moal
2020-09-29 8:33 ` Sagi Grimberg
2020-09-29 21:17 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 05/20] nvme: rename _nvme_revalidate_disk Christoph Hellwig
2020-09-28 14:20 ` Damien Le Moal
2020-09-29 8:34 ` Sagi Grimberg
2020-09-29 21:18 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 06/20] nvme: rename __nvme_revalidate_disk Christoph Hellwig
2020-09-28 14:21 ` Damien Le Moal
2020-09-29 8:35 ` Sagi Grimberg
2020-09-29 21:20 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 07/20] nvme: lift the check for an unallocated namespace into nvme_identify_ns Christoph Hellwig
2020-09-28 14:27 ` Damien Le Moal [this message]
2020-09-29 18:29 ` Christoph Hellwig
2020-09-29 8:36 ` Sagi Grimberg
2020-09-29 21:22 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 08/20] nvme: call nvme_identify_ns as the first thing in nvme_alloc_ns_block Christoph Hellwig
2020-09-28 14:32 ` Damien Le Moal
2020-09-29 8:39 ` Sagi Grimberg
2020-09-29 18:30 ` Christoph Hellwig
2020-09-29 21:24 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 09/20] nvme: factor out a nvme_configure_metadata helper Christoph Hellwig
2020-09-28 14:35 ` Damien Le Moal
2020-09-29 8:40 ` Sagi Grimberg
2020-09-29 21:27 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 10/20] nvme: freeze the queue over ->lba_shift updates Christoph Hellwig
2020-09-28 14:49 ` Damien Le Moal
2020-09-29 8:48 ` Sagi Grimberg
2020-09-29 18:32 ` Christoph Hellwig
2020-09-29 19:07 ` Sagi Grimberg
2020-10-02 16:03 ` Sagi Grimberg
2020-10-05 8:32 ` Christoph Hellwig
2020-09-28 12:34 ` [PATCH 11/20] nvme: clean up the check for too large logic block sizes Christoph Hellwig
2020-09-28 14:50 ` Damien Le Moal
2020-09-29 18:33 ` Christoph Hellwig
2020-09-29 8:50 ` Sagi Grimberg
2020-09-29 18:34 ` Christoph Hellwig
2020-09-28 12:34 ` [PATCH 12/20] nvme: remove the 0 lba_shift check in nvme_update_ns_info Christoph Hellwig
2020-09-28 14:51 ` Damien Le Moal
2020-09-29 8:52 ` Sagi Grimberg
2020-09-29 18:34 ` Christoph Hellwig
2020-09-29 21:46 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 13/20] nvme: set the queue limits " Christoph Hellwig
2020-09-28 14:55 ` Damien Le Moal
2020-09-29 8:54 ` Sagi Grimberg
2020-09-29 21:52 ` Chaitanya Kulkarni
2020-09-30 6:12 ` Christoph Hellwig
2020-09-28 12:34 ` [PATCH 14/20] nvme: update the known admin effects Christoph Hellwig
2020-09-28 14:57 ` Damien Le Moal
2020-09-29 8:55 ` Sagi Grimberg
2020-09-29 21:54 ` Chaitanya Kulkarni
2020-09-28 12:34 ` [PATCH 15/20] nvme: remove nvme_update_formats Christoph Hellwig
2020-09-28 15:02 ` Damien Le Moal
2020-09-28 12:34 ` [PATCH 16/20] nvme: revalidate zone bitmaps in nvme_update_ns_info Christoph Hellwig
2020-09-28 15:06 ` Damien Le Moal
2020-09-29 18:37 ` Christoph Hellwig
2020-09-28 12:34 ` [PATCH 17/20] nvme: query namespae identifiers before adding the namespace Christoph Hellwig
2020-09-28 15:11 ` Damien Le Moal
2020-09-30 9:44 ` Niklas Cassel
2020-09-30 10:04 ` Niklas Cassel
2020-10-01 17:14 ` Christoph Hellwig
2020-10-01 17:43 ` Niklas Cassel
2020-10-02 6:41 ` Christoph Hellwig
2020-09-28 12:35 ` [PATCH 18/20] nvme: move nvme_validate_ns Christoph Hellwig
2020-09-28 15:12 ` Damien Le Moal
2020-09-30 0:22 ` Chaitanya Kulkarni
2020-09-30 6:13 ` Christoph Hellwig
2020-09-28 12:35 ` [PATCH 19/20] nvme: refactor nvme_validate_ns Christoph Hellwig
2020-09-28 15:15 ` Damien Le Moal
2020-09-29 18:40 ` Christoph Hellwig
2020-09-28 12:35 ` [PATCH 20/20] nvme: remove nvme_identify_ns_list Christoph Hellwig
2020-09-29 23:59 ` Chaitanya Kulkarni
2020-09-29 16:51 ` refactor the nvme scanning and validation code Keith Busch
2020-09-30 6:41 ` Christoph Hellwig
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