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SubjectRe: [PATCH v1 5/5] mm/memory_hotplug: print only with DEBUG_VM in online/offline_pages()
>  failed_addition:
> +#ifdef CONFIG_DEBUG_VM
> pr_debug("online_pages [mem %#010llx-%#010llx] failed\n",
> (unsigned long long) pfn << PAGE_SHIFT,
> (((unsigned long long) pfn + nr_pages) << PAGE_SHIFT) - 1);
> +#endif

I have never been sure about this.
IMO, if I fail to online pages, I want to know I failed.
I think that pr_err would be better than pr_debug and without CONFIG_DEBUG_VM.

But at least, if not, envolve it with a CONFIG_DEBUG_VM, but change pr_debug to pr_info.

> +#ifdef CONFIG_DEBUG_VM
> pr_debug("memory offlining [mem %#010llx-%#010llx] failed\n",
> (unsigned long long) start_pfn << PAGE_SHIFT,
> ((unsigned long long) end_pfn << PAGE_SHIFT) - 1);
> +#endif

Same goes here.

Thanks
--
Oscar Salvador
SUSE L3

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