mm/memory_hotplug.c: use PFN_DOWN()
Replace ((x) >> PAGE_SHIFT) with the pfn macro.
Signed-off-by: Fabian Frederick <fabf@skynet.be>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 2906873..cbb7ca0 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1069,7 +1069,7 @@
struct pglist_data *pgdat;
unsigned long zones_size[MAX_NR_ZONES] = {0};
unsigned long zholes_size[MAX_NR_ZONES] = {0};
- unsigned long start_pfn = start >> PAGE_SHIFT;
+ unsigned long start_pfn = PFN_DOWN(start);
pgdat = NODE_DATA(nid);
if (!pgdat) {
@@ -1141,7 +1141,7 @@
static int check_hotplug_memory_range(u64 start, u64 size)
{
- u64 start_pfn = start >> PAGE_SHIFT;
+ u64 start_pfn = PFN_DOWN(start);
u64 nr_pages = size >> PAGE_SHIFT;
/* Memory range must be aligned with section */
