Linux-NVME Archive on lore.kernel.org
 help / color / Atom feed
From: Christoph Hellwig <hch@lst.de>
To: Logan Gunthorpe <logang@deltatee.com>
Cc: Jens Axboe <axboe@fb.com>, Sagi Grimberg <sagi@grimberg.me>,
	Chaitanya Kulkarni <Chaitanya.Kulkarni@wdc.com>,
	linux-kernel@vger.kernel.org, linux-nvme@lists.infradead.org,
	Stephen Bates <sbates@raithlin.com>,
	linux-block@vger.kernel.org, Keith Busch <kbusch@kernel.org>,
	linux-fsdevel@vger.kernel.org, Max Gurtovoy <maxg@mellanox.com>,
	Christoph Hellwig <hch@lst.de>
Subject: Re: [PATCH v9 01/12] nvme-core: introduce nvme_ctrl_get_by_path()
Date: Thu, 10 Oct 2019 13:37:54 +0200
Message-ID: <20191010113754.GA28921@lst.de> (raw)
In-Reply-To: <20191009192530.13079-2-logang@deltatee.com>

> +struct nvme_ctrl *nvme_ctrl_get_by_path(const char *path)
> +{
> +	struct nvme_ctrl *ctrl;
> +	struct file *f;
> +
> +	f = filp_open(path, O_RDWR, 0);
> +	if (IS_ERR(f))
> +		return ERR_CAST(f);
> +
> +	if (f->f_op != &nvme_dev_fops) {
> +		ctrl = ERR_PTR(-EINVAL);
> +		goto out_close;
> +	}
> +
> +	ctrl = f->private_data;
> +	nvme_get_ctrl(ctrl);
> +
> +out_close:
> +	filp_close(f, NULL);
> +
> +	return ctrl;

No need for the empty line here.  Also can you make sure this new
code (and all the new exports) are only enabled if
CONFIG_NVME_TARGET_PASSTHRU is set.  Preferably by having a little
block at the end of this file with this function and the extra
exports with a big fat comment that they are only for nvmet-passthrough.

_______________________________________________
Linux-nvme mailing list
Linux-nvme@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/linux-nvme

  parent reply index

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-10-09 19:25 [PATCH v9 00/12] nvmet: add target passthru commands support Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 01/12] nvme-core: introduce nvme_ctrl_get_by_path() Logan Gunthorpe
2019-10-09 22:13   ` Keith Busch
2019-10-10 11:37   ` Christoph Hellwig [this message]
2019-10-09 19:25 ` [PATCH v9 02/12] nvme-core: export existing ctrl and ns interfaces Logan Gunthorpe
2019-10-09 22:14   ` Keith Busch
2019-10-09 19:25 ` [PATCH v9 03/12] nvmet: add return value to nvmet_add_async_event() Logan Gunthorpe
2019-10-09 22:17   ` Keith Busch
2019-10-09 19:25 ` [PATCH v9 04/12] nvmet: make nvmet_copy_ns_identifier() non-static Logan Gunthorpe
2019-10-09 22:18   ` Keith Busch
2019-10-10 11:50   ` Christoph Hellwig
2019-10-09 19:25 ` [PATCH v9 05/12] Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> [logang@deltatee.com: fixed some of the wording in the help message] Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Reviewed-by: Max Gurtovoy <maxg@mellanox.com> Logan Gunthorpe
2019-10-10 12:34   ` Christoph Hellwig
2019-10-25 23:09     ` [PATCH v9 05/12] Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 05/12] nvmet-passthru: add passthru code to process commands Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 06/12] nvmet-passthru: add enable/disable helpers Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 07/12] nvmet-core: don't check the data len for pt-ctrl Logan Gunthorpe
2019-10-10 11:04   ` Christoph Hellwig
2019-10-09 19:25 ` [PATCH v9 08/12] nvmet-tcp: don't check data_len in nvmet_tcp_map_data() Logan Gunthorpe
2019-10-10 11:07   ` Christoph Hellwig
2019-10-09 19:25 ` [PATCH v9 09/12] nvmet-configfs: introduce passthru configfs interface Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 10/12] block: don't check blk_rq_is_passthrough() in blk_do_io_stat() Logan Gunthorpe
2019-10-10 10:05   ` Christoph Hellwig
2019-10-10 17:56     ` Logan Gunthorpe
2019-10-09 19:25 ` [PATCH v9 11/12] block: call blk_account_io_start() in blk_execute_rq_nowait() Logan Gunthorpe
2019-10-10 10:06   ` Christoph Hellwig
2019-10-09 19:25 ` [PATCH v9 12/12] nvmet-passthru: support block accounting Logan Gunthorpe

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20191010113754.GA28921@lst.de \
    --to=hch@lst.de \
    --cc=Chaitanya.Kulkarni@wdc.com \
    --cc=axboe@fb.com \
    --cc=kbusch@kernel.org \
    --cc=linux-block@vger.kernel.org \
    --cc=linux-fsdevel@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-nvme@lists.infradead.org \
    --cc=logang@deltatee.com \
    --cc=maxg@mellanox.com \
    --cc=sagi@grimberg.me \
    --cc=sbates@raithlin.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

Linux-NVME Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-nvme/0 linux-nvme/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-nvme linux-nvme/ https://lore.kernel.org/linux-nvme \
		linux-nvme@lists.infradead.org
	public-inbox-index linux-nvme

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.infradead.lists.linux-nvme


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git