linux-kernel - Re: [Non-DoD Source] [PATCH v3 15/15] md/raid5: Increase restriction on max segments per request

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Message-ID: <68536888-54fc-adde-a69d-321a5004e566@deltatee.com>
Date:   Thu, 16 Jun 2022 15:35:47 -0600
From:   Logan Gunthorpe <logang@...tatee.com>
To:     "Finlayson, James M CIV (USA)" <james.m.finlayson4.civ@...l.mil>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-raid@...r.kernel.org" <linux-raid@...r.kernel.org>,
        Song Liu <song@...nel.org>
Cc:     Christoph Hellwig <hch@...radead.org>,
        Guoqing Jiang <guoqing.jiang@...ux.dev>,
        Stephen Bates <sbates@...thlin.com>,
        Martin Oliveira <Martin.Oliveira@...eticom.com>,
        David Sloan <David.Sloan@...eticom.com>
Subject: Re: [Non-DoD Source] [PATCH v3 15/15] md/raid5: Increase restriction
 on max segments per request



On 2022-06-16 15:32, Finlayson, James M CIV (USA) wrote:
> Innocent question from position of ignorance....I see these last 15 check-ins all as performance improvements.   I tend to push hard on mdraid performance, but have RAID6 needs....are these some optimizations available for RAID6 and are they in process or did I just ask a silly question?

Yes, the optimizations in this series should improve raid6 performance
in the exact same way.

Raid6 and Raid5 share the same implementation. They are both
(confusingly) in the raid5.c file.

Logan