Re: [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host

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To: Hannes Reinecke <hare@xxxxxxx>
Subject: Re: [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host
From: Christoph Hellwig <hch@xxxxxx>
Date: Thu, 6 Jun 2019 08:41:53 +0200
Cc: Christoph Hellwig <hch@xxxxxx>, Jens Axboe <axboe@xxxxxxxxx>, Sebastian Ott <sebott@xxxxxxxxxxxxx>, Sagi Grimberg <sagi@xxxxxxxxxxx>, Max Gurtovoy <maxg@xxxxxxxxxxxx>, Bart Van Assche <bvanassche@xxxxxxx>, Ulf Hansson <ulf.hansson@xxxxxxxxxx>, Alan Stern <stern@xxxxxxxxxxxxxxxxxxx>, Oliver Neukum <oneukum@xxxxxxxx>, linux-block@xxxxxxxxxxxxxxx, linux-rdma@xxxxxxxxxxxxxxx, linux-mmc@xxxxxxxxxxxxxxx, linux-nvme@xxxxxxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, megaraidlinux.pdl@xxxxxxxxxxxx, MPT-FusionLinux.pdl@xxxxxxxxxxxx, linux-hyperv@xxxxxxxxxxxxxxx, linux-usb@xxxxxxxxxxxxxxx, usb-storage@xxxxxxxxxxxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <345c3931-0940-7d59-ebc6-fa1ea56c60ac@suse.de>
References: <20190605190836.32354-1-hch@lst.de> <20190605190836.32354-11-hch@lst.de> <345c3931-0940-7d59-ebc6-fa1ea56c60ac@suse.de>
User-agent: Mutt/1.5.17 (2007-11-01)

On Thu, Jun 06, 2019 at 08:02:07AM +0200, Hannes Reinecke wrote:
> >  	scsi_change_queue_depth(sdev, device_qd);
> >  
> What happened to the NOMERGES queue flag?

Quote from the patch description:

"Also remove the bogus nomerges flag, merges do take the virt_boundary
 into account."

References:
- properly communicate queue limits to the DMA layer
  - From: Christoph Hellwig
- [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host
  - From: Christoph Hellwig
- Re: [PATCH 10/13] megaraid_sas: set virt_boundary_mask in the scsi host
  - From: Hannes Reinecke

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