FREE_AREA_INIT_NODES(9)             Memory Management in Linux            FREE_AREA_INIT_NODES(9)



NAME
       free_area_init_nodes - Initialise all pg_data_t and zone data

SYNOPSIS
       void free_area_init_nodes(unsigned long * max_zone_pfn);

ARGUMENTS
       max_zone_pfn
           an array of max PFNs for each zone

DESCRIPTION
       This will call free_area_init_node for each active node in the system. Using the page
       ranges provided by memblock_set_node, the size of each zone in each node and their holes
       is calculated. If the maximum PFN between two adjacent zones match, it is assumed that the
       zone is empty. For example, if arch_max_dma_pfn == arch_max_dma32_pfn, it is assumed that
       arch_max_dma32_pfn has no pages. It is also assumed that a zone starts where the previous
       one ended. For example, ZONE_DMA32 starts at arch_max_dma_pfn.

COPYRIGHT
Kernel Hackers Manual 4.8.                 January 2017                   FREE_AREA_INIT_NODES(9)