[dm-devel] [PATCH 1/2] dm-mpath: Enable hw_handler_params to take effect if hw_handler is the same between new and old

[Mike Snitzer]

On Thu, Nov 24 2016 at  2:11am -0500,
tang.junhui at zte.com.cn <tang.junhui at zte.com.cn> wrote:

> From: "tang.junhui" <tang.junhui at zte.com.cn>
> 
> If the hardware handle which a device has already attached is the same
> with m->hw_handler_name, m->hw_handler_params should not be ignored, but
> be enabled to take effect.
> 
> Signed-off-by: tang.junhui <tang.junhui at zte.com.cn>

I tweaked this a little bit and staged it for 4.10, see:
https://git.kernel.org/cgit/linux/kernel/git/device-mapper/linux-dm.git/commit/?h=dm-4.10&id=1422b33eda2ffbc70eb11163bf7ac1e59ebba222