mm/memory_hotplug: do not unlock after failing to take the device_hotplug_lock
When adding memory by probing a memory block in the sysfs interface,
there is an obvious issue where we will unlock the device_hotplug_lock
when we failed to takes it.
That issue was introduced in 8df1d0e4a265 ("mm/memory_hotplug: make
add_memory() take the device_hotplug_lock").
We should drop out in time when failing to take the device_hotplug_lock.
Fixes: 8df1d0e4a265 ("mm/memory_hotplug: make add_memory() take the device_hotplug_lock")
Signed-off-by: zhong jiang <firstname.lastname@example.org>
Reported-by: Yang yingliang <email@example.com>
Acked-by: Michal Hocko <firstname.lastname@example.org>
Reviewed-by: David Hildenbrand <email@example.com>
Reviewed-by: Oscar Salvador <firstname.lastname@example.org>
Signed-off-by: Andrew Morton <email@example.com>
Signed-off-by: Linus Torvalds <firstname.lastname@example.org>
1 file changed