[Crash-utility] One more change for crash

[Badari Pulavarty]

Hi Dave,

I am playing with "crash" on my machine with it fails with
CONFIG_SPARSE_MEM. It looks like "node_mem_map" doesn't
exist for SPARSE_MEM :(

crash: invalid structure member offset: pglist_data_node_mem_map
       FILE: memory.c  LINE: 10053  FUNCTION: dump_memory_nodes()

[./crash] error trace: 100afe98 => 100d12f4 => 100d01cc => 10142f64

  10142f64: .OFFSET_verify+140
  100d01cc: .dump_memory_nodes+520
  100d12f4: .node_table_init+492
  100afe98: .vm_init+7948


Thanks,
Badari


typedef struct pglist_data {
        struct zone node_zones[MAX_NR_ZONES];
        struct zonelist node_zonelists[GFP_ZONETYPES];
        int nr_zones;
#ifdef CONFIG_FLAT_NODE_MEM_MAP
        struct page *node_mem_map;
#endif
        struct bootmem_data *bdata;