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mm/memory_hotplug.c: use PFN_DOWN()

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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>
This commit is contained in:
Fabian Frederick 2014-06-04 16:07:51 -07:00 committed by Linus Torvalds
parent 96f8d8e096
commit c8e861a531
1 changed files with 2 additions and 2 deletions
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4
mm/memory_hotplug.c
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@ -1069,7 +1069,7 @@ static pg_data_t __ref *hotadd_new_pgdat(int nid, u64 start)
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 @@ out:
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 */