linux-kernel - Re: [PATCH 23/36] driver core: bus: mark the struct bus

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Date:   Tue, 14 Mar 2023 22:33:57 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, rafael@...nel.org,
        "David S. Miller" <davem@...emloft.net>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "K. Y. Srinivasan" <kys@...rosoft.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Alex Shi <alexs@...nel.org>,
        Alexander Gordeev <agordeev@...ux.ibm.com>,
        Alexandre Bounine <alex.bou9@...il.com>,
        Alison Schofield <alison.schofield@...el.com>,
        Ben Widawsky <bwidawsk@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Dan Williams <dan.j.williams@...el.com>,
        Dexuan Cui <decui@...rosoft.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Haiyang Zhang <haiyangz@...rosoft.com>,
        Hannes Reinecke <hare@...e.de>,
        Harald Freudenberger <freude@...ux.ibm.com>,
        Heiko Carstens <hca@...ux.ibm.com>,
        Hu Haowen <src.res@...il.cn>,
        Ilya Dryomov <idryomov@...il.com>,
        Ira Weiny <ira.weiny@...el.com>,
        Iwona Winiarska <iwona.winiarska@...el.com>,
        Jakub Kicinski <kuba@...nel.org>, Jens Axboe <axboe@...nel.dk>,
        Jonathan Corbet <corbet@....net>,
        Laurentiu Tudor <laurentiu.tudor@....com>,
        Matt Porter <mporter@...nel.crashing.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Paolo Abeni <pabeni@...hat.com>,
        Stuart Yoder <stuyoder@...il.com>,
        Vasily Gorbik <gor@...ux.ibm.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        Wei Liu <wei.liu@...nel.org>,
        Yanteng Si <siyanteng@...ngson.cn>
Subject: Re: [PATCH 23/36] driver core: bus: mark the struct bus_type for
 sysfs callbacks as constant


Greg,

> struct bus_type should never be modified in a sysfs callback as there
> is nothing in the structure to modify, and frankly, the structure is
> almost never used in a sysfs callback, so mark it as constant to allow
> struct bus_type to be moved to read-only memory.

Acked-by: Martin K. Petersen <martin.petersen@...cle.com> # scsi

-- 
Martin K. Petersen	Oracle Linux Engineering