mm/page_alloc.c: fix type information of memoryless node

For a memoryless node, the output of get_pfn_range_for_nid are all zero.
It will display mem from 0 to -1.

Signed-off-by: Zhen Lei <thunder.leizhen@huawei.com>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 2 insertions, 1 deletions

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index b0fda2b9ca76..4a4c399baceb 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -5476,7 +5476,8 @@ void __paginginit free_area_init_node(int nid, unsigned long *zones_size,
 #ifdef CONFIG_HAVE_MEMBLOCK_NODE_MAP
         get_pfn_range_for_nid(nid, &start_pfn, &end_pfn);
         pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid,
-                (u64)start_pfn << PAGE_SHIFT, ((u64)end_pfn << PAGE_SHIFT) - 1);
+                (u64)start_pfn << PAGE_SHIFT,
+                end_pfn ? ((u64)end_pfn << PAGE_SHIFT) - 1 : 0);
 #endif
         calculate_node_totalpages(pgdat, start_pfn, end_pfn,
                                   zones_size, zholes_size);