1 files changed, 3 insertions, 0 deletions

diff --git a/arch/parisc/mm/init.c b/arch/parisc/mm/init.c
index 2886ad70db48..29b998e430e6 100644
--- a/arch/parisc/mm/init.c
+++ b/arch/parisc/mm/init.c
@@ -505,7 +505,9 @@ void show_mem(void)
 
                 for (j = node_start_pfn(i); j < node_end_pfn(i); j++) {
                         struct page *p;
+                        unsigned long flags;
 
+                        pgdat_resize_lock(NODE_DATA(i), &flags);
                         p = nid_page_nr(i, j) - node_start_pfn(i);
 
                         total++;
@@ -517,6 +519,7 @@ void show_mem(void)
                                 free++;
                         else
                                 shared += page_count(p) - 1;
+                        pgdat_resize_unlock(NODE_DATA(i), &flags);
                 }
         }
 #endif