lkml.org 
[lkml]   [2014]   [Sep]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH] scsi: fix regression that accidentally disabled block-based tcq
On 9/12/14 7:00 PM, Christoph Hellwig wrote:
> Please try the fix below, looks like the commit broke TCQ for all drivers
> using block-level tagging.
>
> ---
> From 865a19b760d2786fe37d3b5c151a4ecea4c0e95e Mon Sep 17 00:00:00 2001
> From: Christoph Hellwig <hch@lst.de>
> Date: Fri, 12 Sep 2014 16:00:19 -0700
> Subject: scsi: fix regression that accidentally disabled block-based tcq
>
> The scsi blk-mq support accidentally flipped a conditional, which lead to
> never enabling block based tcq when using the legacy request path.
>
> Fixes: d285203cf647d7c9 scsi: add support for a blk-mq based I/O path.
> Reported-by: Hans de Goede <hdegoede@redhat.com>
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
> include/scsi/scsi_tcq.h | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/include/scsi/scsi_tcq.h b/include/scsi/scsi_tcq.h
> index cdcc90b..e645835 100644
> --- a/include/scsi/scsi_tcq.h
> +++ b/include/scsi/scsi_tcq.h
> @@ -68,7 +68,7 @@ static inline void scsi_activate_tcq(struct scsi_device *sdev, int depth)
> return;
>
> if (!shost_use_blk_mq(sdev->host) &&
> - blk_queue_tagged(sdev->request_queue))
> + !blk_queue_tagged(sdev->request_queue))
> blk_queue_init_tags(sdev->request_queue, depth,
> sdev->host->bqt);
>


Reviewed-by: Webb Scales <webbnh@hp.com>



\
 
 \ /
  Last update: 2014-09-15 21:21    [W:1.244 / U:0.676 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site