Re: [RFC PATCH 4/5] scsi: target: increase XCOPY I/O size

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To: David Disseldorp <ddiss@xxxxxxx>
Subject: Re: [RFC PATCH 4/5] scsi: target: increase XCOPY I/O size
From: Christoph Hellwig <hch@xxxxxxxxxxxxx>
Date: Tue, 24 Mar 2020 02:16:52 -0700
Cc: target-devel@xxxxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, martin.petersen@xxxxxxxxxx, bvanassche@xxxxxxx
In-reply-to: <20200323165410.24423-5-ddiss@suse.de>

On Mon, Mar 23, 2020 at 05:54:09PM +0100, David Disseldorp wrote:
> The I/O size is already bound by dev_attrib.hw_max_sectors, so increase
> the hardcoded XCOPY_MAX_SECTORS maximum to improve performance against
> backstores with high-latency.

Looks good,

Reviewed-by: Christoph Hellwig <hch@xxxxxx>

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References:
- [RFC PATCH 0/5] scsi: target: XCOPY performance
  - From: David Disseldorp
- [RFC PATCH 4/5] scsi: target: increase XCOPY I/O size
  - From: David Disseldorp

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