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Commit 6a08d031 authored by Srinivasarao Pathipati's avatar Srinivasarao Pathipati
Browse files

Revert "arm: extend pfn_valid to take into account freed memory map alignment" 



This reverts commit 6026d403.

Change-Id: Ic5175e2caf9b8bed357c38de67156fd6f90e4a17
Signed-off-by: default avatarSrinivasarao Pathipati <quic_spathi@quicinc.com>
parent 598165f1

arch/arm/mm/init.c

+1 −12
Original line number Diff line number Diff line
@@ -176,22 +176,11 @@ static void __init zone_sizes_init(unsigned long min, unsigned long max_low, 
int pfn_valid(unsigned long pfn)

{

	phys_addr_t addr = __pfn_to_phys(pfn);

	unsigned long pageblock_size = PAGE_SIZE * pageblock_nr_pages;



	if (__phys_to_pfn(addr) != pfn)

		return 0;



	/*

	 * If address less than pageblock_size bytes away from a present

	 * memory chunk there still will be a memory map entry for it

	 * because we round freed memory map to the pageblock boundaries.

	 */

	if (memblock_overlaps_region(&memblock.memory,

				     ALIGN_DOWN(addr, pageblock_size),

				     pageblock_size))

		return 1;



	return 0;

	return memblock_is_map_memory(__pfn_to_phys(pfn));

}

EXPORT_SYMBOL(pfn_valid);

#endif