linux-kernel - Re: [PATCH v3] staging: lustre: mdc: manage number of modify RPCs in flight

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Date:   Wed, 9 Nov 2016 17:03:54 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     James Simmons <jsimmons@...radead.org>
Cc:     devel@...verdev.osuosl.org,
        Andreas Dilger <andreas.dilger@...el.com>,
        Oleg Drokin <oleg.drokin@...el.com>,
        Gregoire Pichon <gregoire.pichon@...l.net>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Lustre Development List <lustre-devel@...ts.lustre.org>
Subject: Re: [PATCH v3] staging: lustre: mdc: manage number of modify RPCs in
 flight

On Mon, Nov 07, 2016 at 05:23:23PM -0500, James Simmons wrote:
> From: Gregoire Pichon <gregoire.pichon@...l.net>
> 
> This patch is the main client part of a new feature that supports
> multiple modify metadata RPCs in parallel. Its goal is to improve
> metadata operations performance of a single client, while maintening
> the consistency of MDT reply reconstruction and MDT recovery
> mechanisms.
> 
> It allows to manage the number of modify RPCs in flight within
> the client obd structure and to assign a virtual index (the tag) to
> each modify RPC to help server side cleaning of reply data.
> 
> The mdc component uses this feature to send multiple modify RPCs
> in parallel.
> 
> Changelog:
> 
> v1) Initial patch with incorrect print out of timestamp in
>     obd_mod_rpc_stats_seq_show.
> 
> v2) Fixed up obd_mod_rpc_stats_seq_show to print out in nanoseconds
> 
> v3) Add this changelog

changelog goes below the --- line, you don't want that in the final
commit, right?

Please fix up and resend.

thanks,

greg k-h