lkml.org 
[lkml]   [2019]   [Apr]   [18]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] nvme: determine the number of IO queues
On Thu, Apr 18, 2019 at 02:21:57PM +0800, Aaron Ma wrote:
> On 4/18/19 1:33 AM, Maxim Levitsky wrote:
> >>
> >> Maybe its better to add a quirk for the broken device, which needs this?
>
> Adding quirk only makes the code more complicated.
> This patch doesn't change the default behavior.
> Only handle the NVME error code.

It does change the default behavior. If I have a degraded controller that
can't do IO in a machine with 1000's of CPUs, I have to iterate this
non-standard behavior 1000's of times before the drive is servicable
again. We currenlty figure that out in just a single try.

At least the quirks document *why* the driver is doing non-standard
behavior. We do the IO queue quirks for Macbooks, for example.

But why don't you file a bug report with the device vendor instead? Surely
a firmware fix provides the best possible outcome, and would make this
device work not only in all versions of Linux, but also every standard
compliant driver for any OS.

\
 
 \ /
  Last update: 2019-04-18 15:55    [W:0.097 / U:0.576 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site