kernel/power/tuxonice_pageflags.c

   1 /*
   2  * kernel/power/tuxonice_pageflags.c
   3  *
   4  * Copyright (C) 2004-2010 Nigel Cunningham (nigel at tuxonice net)
   5  *
   6  * This file is released under the GPLv2.
   7  *
   8  * Routines for serialising and relocating pageflags in which we
   9  * store our image metadata.
  10  */
  11
  12 #include <linux/list.h>
  13 #include <linux/module.h>
  14 #include "tuxonice_pageflags.h"
  15 #include "power.h"
  16
  17 int toi_pageflags_space_needed(void)
  18 {
  19         int total = 0;
  20         struct bm_block *bb;
  21
  22         total = sizeof(unsigned int);
  23
  24         list_for_each_entry(bb, &pageset1_map->blocks, hook)
  25             total += 2 * sizeof(unsigned long) + PAGE_SIZE;
  26
  27         return total;
  28 }
  29 EXPORT_SYMBOL_GPL(toi_pageflags_space_needed);