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From: Yadan Fan <ydfan@suse.com>
To: Johannes Thumshirn <jthumshirn@suse.de>
Cc: don.brace@microsemi.com, jejb@linux.vnet.ibm.com,
	martin.petersen@oracle.com, esc.storagedev@microsemi.com,
	linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 1/2] hpsa: limit transfer length to 1MB
Date: Fri, 23 Jun 2017 17:12:54 +0800	[thread overview]
Message-ID: <75d55466-a883-3335-ad96-9baff4b907cd@suse.com> (raw)
In-Reply-To: <20170622100657.GG5670@linux-x5ow.site>

Hi Johannes,


On 2017年06月22日 18:06, Johannes Thumshirn wrote:
> On Thu, Jun 22, 2017 at 05:58:44PM +0800, Yadan Fan wrote:
>> 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 SLE12-SP2.
> Upstream doesn't care too much about SLES.
>
>> References: bsc#1025461
> and our internal Bugzilla IDs
>
>
> How about:
> The hpsa firmware will bypass the cache for any requests larger than 1MB, so
> we shoould cap the request size to avoid any performance regressions in
> kernels later than 4.3
>
> The same applies for Patch 2/2

Yes, I agree so, I will resend the modified patches.

Thanks,
Yadan

      reply	other threads:[~2017-06-23  9:13 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-22  9:58 [PATCH 1/2] hpsa: limit transfer length to 1MB Yadan Fan
2017-06-22  9:58 ` [PATCH 2/2] smartpqi: " Yadan Fan
2017-06-22 10:06 ` [PATCH 1/2] hpsa: " Johannes Thumshirn
2017-06-23  9:12   ` Yadan Fan [this message]

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