Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB

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To: don.brace@xxxxxxxxxxxxx
Subject: Re: [PATCH v2 2/2] smartpqi: limit transfer length to 1MB
From: "Martin K. Petersen" <martin.petersen@xxxxxxxxxx>
Date: Wed, 12 Jul 2017 17:27:08 -0400
Cc: Yadan Fan <ydfan@xxxxxxxx>, martin.petersen@xxxxxxxxxx, jejb@xxxxxxxxxxxxxxxxxx, esc.storagedev@xxxxxxxxxxxxx, linux-scsi@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx
In-reply-to: <20170623094006.16807-2-ydfan@suse.com> (Yadan Fan's message of "Fri, 23 Jun 2017 17:40:06 +0800")
Organization: Oracle Corporation
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux)

Don,

> The smartpqi firmware will bypass the cache for any request larger
> than 1MB, so we should cap the request size to avoid any
> performance degradation in kernels later than v4.3

Ping on these...

-- 
Martin K. Petersen	Oracle Linux Engineering

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References:
- [PATCH v2 1/2] hpsa: limit transfer length to 1MB
  - From: Yadan Fan
- [PATCH v2 2/2] smartpqi: limit transfer length to 1MB
  - From: Yadan Fan

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