'\" t
.\"     Title: free_area_init_nodes
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: January 2017
.\"    Manual: Memory Management in Linux
.\"    Source: Kernel Hackers Manual 4.8.15
.\"  Language: English
.\"
.TH "FREE_AREA_INIT_NODES" "9" "January 2017" "Kernel Hackers Manual 4\&.8\&." "Memory Management in Linux"
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.SH "NAME"
free_area_init_nodes \- Initialise all pg_data_t and zone data
.SH "SYNOPSIS"
.HP \w'void\ free_area_init_nodes('u
.BI "void free_area_init_nodes(unsigned\ long\ *\ " "max_zone_pfn" ");"
.SH "ARGUMENTS"
.PP
\fImax_zone_pfn\fR
.RS 4
an array of max PFNs for each zone
.RE
.SH "DESCRIPTION"
.PP
This will call
\fBfree_area_init_node\fR
for each active node in the system\&. Using the page ranges provided by
\fBmemblock_set_node\fR, 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\&.
.SH "COPYRIGHT"
.br