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Commit 647ecf34 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "mm/hotplug: invalid PFNs from pfn_to_online_page()"

parents 492aa84a 018bc5b3

include/linux/memory_hotplug.h

+10 −8
Original line number Diff line number Diff line
@@ -24,10 +24,12 @@ struct vmem_altmap; 
#define pfn_to_online_page(pfn)					   \

({								   \

	struct page *___page = NULL;				   \

	unsigned long ___nr = pfn_to_section_nr(pfn);	\

	unsigned long ___pfn = pfn;				   \

	unsigned long ___nr = pfn_to_section_nr(___pfn);	   \

								   \

	if (___nr < NR_MEM_SECTIONS && online_section_nr(___nr))\

		___page = pfn_to_page(pfn);		\

	if (___nr < NR_MEM_SECTIONS && online_section_nr(___nr) && \

	    pfn_valid_within(___pfn))				   \

		___page = pfn_to_page(___pfn);			   \

	___page;						   \

})