From: Christoph Hellwig <hch@lst.de>
To: Minwoo Im <minwoo.im.dev@gmail.com>
Cc: "Christoph Hellwig" <hch@lst.de>,
linux-nvme@lists.infradead.org, "Keith Busch" <kbusch@kernel.org>,
"Jens Axboe" <axboe@fb.com>, "Sagi Grimberg" <sagi@grimberg.me>,
"Kanchan Joshi" <joshiiitr@gmail.com>,
"Javier González" <javier.gonz@samsung.com>
Subject: Re: [PATCH V2 1/1] nvme: introduce generic per-namespace chardev
Date: Wed, 7 Apr 2021 17:40:00 +0200 [thread overview]
Message-ID: <20210407154000.GA26718@lst.de> (raw)
In-Reply-To: <20210407153536.GA8667@localhost>
On Thu, Apr 08, 2021 at 12:35:36AM +0900, Minwoo Im wrote:
> 1. During the `nvme list` command, controller ioctl for the ns_head has
> been not coming out from the mutex_lock_killable(&nvme_subsystems_lock)
> because it just gets the controller reference and return it without
> unlocking it. So the first change point of this patch is to unlock the
> mutex right before the return. But, Is this a real issue? because
> this changes are not from this series though.....
Yeal issue, stupid rebase error when I stated to split and move a few
more pieces for better reuse from the chardev..
> 2. Can we have the check whether the ns_head has disk allocated or not
> by getting `disk` pointer out of the #ifdef CONFIG_NVME_MULTIPATH?
> If it's not allocated due to some reasons (e.g., !multipath, or CMIC
> does not support multiple controllers, or some failures during the
> allocations), disk will never be allocated. So, I tried to pull the
> `disk` pointer out of the #ifdef from the nvme_ns_head, but maybe
> this is not what you have intended.... It would be great if you can
> give some feedback on this.
This looks pretty sensible. If you give me a signoff I'll commit this
as a separate prep patch.
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next prev parent reply other threads:[~2021-04-07 15:40 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-06 6:48 [PATCH V2 0/1] nvme: introduce generic per-namespace chardev Minwoo Im
2021-04-06 6:48 ` [PATCH V2 1/1] " Minwoo Im
2021-04-07 13:15 ` Christoph Hellwig
2021-04-07 14:11 ` Minwoo Im
2021-04-07 14:21 ` Christoph Hellwig
2021-04-07 15:35 ` Minwoo Im
2021-04-07 15:40 ` Christoph Hellwig [this message]
2021-04-07 15:44 ` Minwoo Im
2021-04-07 15:47 ` Minwoo Im
2021-04-07 16:48 ` Christoph Hellwig
2021-04-07 16:59 ` Minwoo Im
2021-04-07 17:09 ` Minwoo Im
2021-04-07 17:14 ` Christoph Hellwig
2021-04-08 7:11 ` Javier González
2021-04-08 7:26 ` Christoph Hellwig
2021-04-08 10:26 ` Javier González
2021-04-08 11:27 ` Christoph Hellwig
2021-04-08 11:46 ` Javier González
2021-04-08 12:41 ` Minwoo Im
2021-04-06 9:01 ` [PATCH V2 0/1] " Niklas Cassel
2021-04-06 13:35 ` Minwoo Im
2021-04-06 14:59 ` Christoph Hellwig
2021-04-06 16:23 ` Minwoo Im
2021-04-07 6:00 ` Christoph Hellwig
2021-04-07 6:02 ` Minwoo Im
2021-04-07 7:36 ` Niklas Cassel
2021-04-07 9:39 ` Christoph Hellwig
2021-04-07 10:00 ` Niklas Cassel
2021-04-07 10:34 ` Damien Le Moal
2021-04-07 11:50 ` Javier González
2021-04-06 14:13 ` Kanchan Joshi
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