linux-kernel - Re: [PATCH V4 05/11] megaraid_sas: SAS3.5 Generic Megaraid Controllers Fast Path for RAID 1/10 Writes

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Message-ID: <fa806409-b63d-d365-27a6-36838991434c@redhat.com>
Date:   Fri, 9 Dec 2016 11:54:43 +0100
From:   Tomas Henzl <thenzl@...hat.com>
To:     Sasikumar Chandrasekaran <sasikumar.pc@...adcom.com>,
        jejb@...nel.org, hch@...radead.org
Cc:     linux-scsi@...r.kernel.org, Sathya.Prakash@...adcom.com,
        linux-kernel@...r.kernel.org, christopher.owens@...adcom.com,
        kiran-kumar.kasturi@...adcom.com
Subject: Re: [PATCH V4 05/11] megaraid_sas: SAS3.5 Generic Megaraid
 Controllers Fast Path for RAID 1/10 Writes

On 7.12.2016 00:00, Sasikumar Chandrasekaran wrote:
> To improve RAID 1/10 Write performance, OS drivers need to issue the required Write
> IOs as Fast Path IOs (after the appropriate checks allowing Fast Path to be used)
> to the appropriate physical drives (translated from the OS logical IO) and wait for
> all Write IOs to complete.  If any of the Write IOs fail or time out, the IO will be
> re issued to FW as an LD IO so FW can perform the error handling.
>
> This patch is depending on patch 4
>
> Signed-off-by: Sasikumar Chandrasekaran <sasikumar.pc@...adcom.com>

Reviewed-by: Tomas Henzl <thenzl@...hat.com>

Tomas