mm/page_cgroup.c: simplify code by using SECTION_ALIGN_UP() and SECTION_ALIGN_DOWN() macros (1bb36fbd) · Commits · 戴 / test

Commit ("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>

mm/page_cgroup.c

+4 −4

Original line number	Diff line number	Diff line
		@@ -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);

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