From mboxrd@z Thu Jan  1 00:00:00 1970
From: hch@lst.de (Christoph Hellwig)
Date: Thu, 6 Jun 2019 08:48:48 +0200
Subject: [RFC PATCH V6 1/3] nvmet: introduce nvmet_req_to_ctrl to get
 ctrl instance
In-Reply-To: <20190606063229.17258-2-minwoo.im.dev@gmail.com>
References: <20190606063229.17258-1-minwoo.im.dev@gmail.com>
 <20190606063229.17258-2-minwoo.im.dev@gmail.com>
Message-ID: <20190606064848.GF27033@lst.de>

On Thu, Jun 06, 2019@03:32:27PM +0900, Minwoo Im wrote:
> nvme host driver can get the controller instance from
> nvme_req(req)->ctrl.  In case of target driver, it needs to get
> controller instance from the struct nvmet_req with sq where the request
> has been submitted.

Note that normally we can just dereference ->sq just fine, as it only
isn't set in the low-level code before accepting the initial connect.

Maybe keep this as a helper in trace.h?