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mm, memory hotplug: print debug message in the proper way for online_…
…pages online_pages() simply returns an error value if memory_notify(MEM_GOING_ONLINE, &arg) return a value that is not what we want for successfully onlining target pages. This patch arms to print more failure information like offline_pages() in online_pages. This patch also converts printk(KERN_<LEVEL>) to pr_<level>(), and moves __offline_pages() to not print failure information with KERN_INFO according to David Rientjes's suggestion[1]. [1] https://lkml.org/lkml/2016/2/24/1094 Signed-off-by: Chen Yucong <[email protected]> Acked-by: David Rientjes <[email protected]> Signed-off-by: Andrew Morton <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
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