linux-kernel - Re: [PATCH net v2] rds: Fix incorrect statistics counting

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Message-ID: <8260b33b-504b-8b7e-44d0-b8699f33ab74@oracle.com>
Date:   Wed, 6 Sep 2017 09:48:46 -0700
From:   Santosh Shilimkar <santosh.shilimkar@...cle.com>
To:     Håkon Bugge <Haakon.Bugge@...cle.com>,
        "David S . Miller" <davem@...emloft.net>
Cc:     netdev@...r.kernel.org, linux-rdma@...r.kernel.org,
        rds-devel@....oracle.com, linux-kernel@...r.kernel.org,
        knut.omang@...cle.com
Subject: Re: [PATCH net v2] rds: Fix incorrect statistics counting

On 9/6/2017 9:35 AM, Håkon Bugge wrote:
> In rds_send_xmit() there is logic to batch the sends. However, if
> another thread has acquired the lock and has incremented the send_gen,
> it is considered a race and we yield. The code incrementing the
> s_send_lock_queue_raced statistics counter did not count this event
> correctly.
> 
> This commit counts the race condition correctly.
> 
> Changes from v1:
> - Removed check for *someone_on_xmit()*
> - Fixed incorrect indentation
> 
> Signed-off-by: Håkon Bugge <haakon.bugge@...cle.com>
> Reviewed-by: Knut Omang <knut.omang@...cle.com>
> ---

Thanks for the update.
Acked-by: Santosh Shilimkar <santosh.shilimkar@...cle.com>