linux-kernel - Re: [EXT] Re: [PATCH] nvme: Add abrupt shutdown support

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]

Date:   Mon, 5 Jul 2021 12:42:08 +0200
From:   Christoph Hellwig <hch@....de>
To:     "Shivamurthy Shastri (sshivamurthy)" <sshivamurthy@...ron.com>
Cc:     Christoph Hellwig <hch@....de>,
        "kbusch@...nel.org" <kbusch@...nel.org>,
        "axboe@...com" <axboe@...com>,
        "sagi@...mberg.me" <sagi@...mberg.me>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "shiva.linuxworks@...il.com" <shiva.linuxworks@...il.com>
Subject: Re: [EXT] Re: [PATCH] nvme: Add abrupt shutdown support

On Mon, Jul 05, 2021 at 10:40:21AM +0000, Shivamurthy Shastri (sshivamurthy) wrote:
> Micron Confidential
> 
> Hi Christoph,
> 
> > 
> > 
> > On Mon, Jul 05, 2021 at 10:11:57AM +0000, shiva.linuxworks@...il.com wrote:
> > > From: Shivamurthy Shastri <sshivamurthy@...ron.com>
> > >
> > > Enabling the abrupt shutdown support. In this shutdown type host does
> > > not need to send Delete I/O Submission Queue and Delete I/O Completion
> > > queue commands to the device.
> > 
> > Why?
> 
> This is to achieve faster shutdown at the cost of data in-flight.

What is the actual use case, and why would a module paramter be a good
interface?