linux-kernel - Re: [PATCH] xen-netfront: Rework the fix for Rx stall during OOM and network stress

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Date:   Thu, 09 Feb 2017 16:34:41 -0500 (EST)
From:   David Miller <davem@...emloft.net>
To:     vineethp@...zon.com
Cc:     boris.ostrovsky@...cle.com, jgross@...e.com,
        xen-devel@...ts.xenproject.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, kamatam@...zon.com,
        aliguori@...zon.com, guruanb@...zon.com
Subject: Re: [PATCH] xen-netfront: Rework the fix for Rx stall during OOM
 and network stress

From: Vineeth Remanan Pillai <vineethp@...zon.com>
Date: Tue, 7 Feb 2017 18:59:01 +0000

> The commit 90c311b0eeea ("xen-netfront: Fix Rx stall during network
> stress and OOM") caused the refill timer to be triggerred almost on
> all invocations of xennet_alloc_rx_buffers for certain workloads.
> This reworks the fix by reverting to the old behaviour and taking into
> consideration the skb allocation failure. Refill timer is now triggered
> on insufficient requests or skb allocation failure.
> 
> Signed-off-by: Vineeth Remanan Pillai <vineethp@...zon.com>
> Fixes: 90c311b0eeea (xen-netfront: Fix Rx stall during network stress and OOM)
> Reported-by: Boris Ostrovsky <boris.ostrovsky@...cle.com>

Applied.