linux-kernel - Re: [PATCH v2 1/2] hpsa: limit transfer length to 1MB

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Message-ID: <yq1k236fo53.fsf@oracle.com>
Date:   Mon, 17 Jul 2017 22:57:12 -0400
From:   "Martin K. Petersen" <martin.petersen@...cle.com>
To:     Yadan Fan <ydfan@...e.com>
Cc:     don.brace@...rosemi.com, martin.petersen@...cle.com,
        jejb@...ux.vnet.ibm.com, esc.storagedev@...rosemi.com,
        linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 1/2] hpsa: limit transfer length to 1MB


Yadan,

> The hpsa 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

Applied to 4.13/scsi-fixes. Thanks!

-- 
Martin K. Petersen	Oracle Linux Engineering