mm/page_cgroup.c: simplify code by using SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macros

Commit a539f3533b78e3 ("mm: add SECTION_ALIGN_UP() and
SECTION_ALIGN_DOWN() macro") introduced the SECTION_ALIGN_UP() and
SECTION_ALIGN_DOWN() macros.  Use those macros to increase code
readability.

Signed-off-by: Daniel Kiper <dkiper@net-space.pl>
Acked-by: David Rientjes <rientjes@google.com>
Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 4 insertions, 4 deletions

diff --git a/mm/page_cgroup.c b/mm/page_cgroup.c
index 9cb1c44ffc37..39d216d535ea 100644
--- a/mm/page_cgroup.c
+++ b/mm/page_cgroup.c
@@ -225,8 +225,8 @@ int __meminit online_page_cgroup(unsigned long start_pfn,
         unsigned long start, end, pfn;
         int fail = 0;
 
-        start = start_pfn & ~(PAGES_PER_SECTION - 1);
-        end = ALIGN(start_pfn + nr_pages, PAGES_PER_SECTION);
+        start = SECTION_ALIGN_DOWN(start_pfn);
+        end = SECTION_ALIGN_UP(start_pfn + nr_pages);
 
         if (nid == -1) {
                 /*
@@ -258,8 +258,8 @@ int __meminit offline_page_cgroup(unsigned long start_pfn,
 {
         unsigned long start, end, pfn;
 
-        start = start_pfn & ~(PAGES_PER_SECTION - 1);
-        end = ALIGN(start_pfn + nr_pages, PAGES_PER_SECTION);
+        start = SECTION_ALIGN_DOWN(start_pfn);
+        end = SECTION_ALIGN_UP(start_pfn + nr_pages);
 
         for (pfn = start; pfn < end; pfn += PAGES_PER_SECTION)
                 __free_page_cgroup(pfn);