linux-kernel - Re: [PATCH net-next] RDS: fix rds-ping deadlock over TCP transport

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Date:	Fri, 16 Oct 2015 21:45:34 -0400
From:	Sowmini Varadhan <sowmini.varadhan@...cle.com>
To:	Santosh Shilimkar <santosh.shilimkar@...cle.com>
Cc:	netdev@...r.kernel.org, davem@...emloft.net,
	linux-kernel@...r.kernel.org, ssantosh@...nel.org
Subject: Re: [PATCH net-next] RDS: fix rds-ping deadlock over TCP transport

On (10/16/15 20:26), Santosh Shilimkar wrote:
> 
> diff --git a/net/rds/send.c b/net/rds/send.c
> +	if (!test_bit(RDS_LL_SEND_FULL, &conn->c_flags))
> +		queue_delayed_work(rds_wq, &conn->c_send_w, 0);

A minor note- it would help to add some comments here explaining 
that the pong has already been added to the sendq earlier.. 
in the case of IB, if RDS_LL_SEND_FULL has been set, it takes some
head-scratching to figure out how the pong gets sent, and a  few
comments could help clarify that.

but other than that, the contents look good to me, thus

Acked-by: Sowmini Varadhan <sowmini.varadhan@...cle.com>



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