Re: [PATCH 1/1] xen-netback: add reference from xenvif to backend_info to facilitate coredump analysis

[David Miller]

From: Dongli Zhang <dongli.zhang@xxxxxxxxxx>
Date: Fri, 12 Apr 2019 14:53:24 +0800

> During coredump analysis, it is not easy to obtain the address of
> backend_info in xen-netback.
> 
> So far there are two ways to obtain backend_info:
> 
> 1. Do what xenbus_device_find() does for vmcore to find the xenbus_device
> and then derive it from dev_get_drvdata().
> 
> 2. Extract backend_info from callstack of xenwatch (e.g., netback_remove()
> or frontend_changed()).
> 
> This patch adds a reference from xenvif to backend_info so that it would be
> much more easier to obtain backend_info during coredump analysis.
> 
> Signed-off-by: Dongli Zhang <dongli.zhang@xxxxxxxxxx>

Applied to net-next.