Re: [RESENT PATCH] mm/memory_hotplug: Do not unlock when fails to take the device_hotplug_lock

[Oscar Salvador]

On Mon, Apr 08, 2019 at 12:07:17PM +0800, zhong jiang wrote:
> When adding the memory by probing memory block in sysfs interface, there is an
> obvious issue that we will unlock the device_hotplug_lock when fails to takes it.
> 
> That issue was introduced in Commit 8df1d0e4a265
> ("mm/memory_hotplug: make add_memory() take the device_hotplug_lock")
> 
> We should drop out in time when fails to take the device_hotplug_lock.
> 
> Fixes: 8df1d0e4a265 ("mm/memory_hotplug: make add_memory() take the device_hotplug_lock")
> Reported-by: Yang yingliang <yangyingliang@xxxxxxxxxx>
> Signed-off-by: zhong jiang <zhongjiang@xxxxxxxxxx>

Reviewed-by: Oscar Salvador <osalvador@xxxxxxx>

-- 
Oscar Salvador
SUSE L3