linux-kernel - Re: [PATCH] nvme-sysfs: display max_hw_sectors

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <ZxfJ_TfT7MMGWs4X@kbusch-mbp>
Date: Tue, 22 Oct 2024 09:51:25 -0600
From: Keith Busch <kbusch@...nel.org>
To: Sagi Grimberg <sagi@...mberg.me>
Cc: Abhishek Bapat <abhishekbapat@...gle.com>, Jens Axboe <axboe@...nel.dk>,
	Christoph Hellwig <hch@....de>,
	Prashant Malani <pmalani@...gle.com>,
	linux-nvme@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] nvme-sysfs: display max_hw_sectors_kb without requiring
 namespaces

On Tue, Oct 22, 2024 at 06:35:11PM +0300, Sagi Grimberg wrote:
> On 22/10/2024 17:53, Keith Busch wrote:
> > On Thu, Oct 17, 2024 at 02:32:18PM -0700, Abhishek Bapat wrote:
> > 
> > The request_queue is owned by the block layer, so that seems like an
> > okay place to export it, but attached to some other device's sysfs
> > directory instead of a gendisk.
> > 
> > I'm just suggesting this because it doesn't sound like this is an nvme
> > specific problem.
> 
> Won't it be confusing to find queue/ directory in controller nvmeX sysfs
> entry?

It's the attributes of the request queue associated with that
controller, so I think a queue/ directory under it makes sense. That's
how it looks for gendisks, so why not for disk-less queues?

Many queue attributes only make sense for gendisks, though, so maybe
need to tweak visibility if we decide to do it like this.