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zhong jiang
37803841c9
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 in8df1d0e4a2("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. Link: http://lkml.kernel.org/r/[email protected] Fixes:8df1d0e4a2("mm/memory_hotplug: make add_memory() take the device_hotplug_lock") Signed-off-by: zhong jiang <[email protected]> Reported-by: Yang yingliang <[email protected]> Acked-by: Michal Hocko <[email protected]> Reviewed-by: David Hildenbrand <[email protected]> Reviewed-by: Oscar Salvador <[email protected]> Cc: <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>