Commit 3cd14fcd authored by Kirill A. Shutemov's avatar Kirill A. Shutemov Committed by Linus Torvalds
Browse files

thp: account anon transparent huge pages into NR_ANON_PAGES 



We use NR_ANON_PAGES as base for reporting AnonPages to user.  There's
not much sense in not accounting transparent huge pages there, but add
them on printing to user.

Let's account transparent huge pages in NR_ANON_PAGES in the first place.

Signed-off-by: default avatarKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: default avatarDave Hansen <dave.hansen@linux.intel.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Hugh Dickins <hughd@google.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Matthew Wilcox <willy@linux.intel.com>
Cc: Hillf Danton <dhillf@gmail.com>
Cc: Ning Qu <quning@google.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 7caef267

drivers/base/node.c

+0 −6
Original line number Diff line number Diff line
@@ -125,13 +125,7 @@ static ssize_t node_read_meminfo(struct device *dev, 
		       nid, K(node_page_state(nid, NR_WRITEBACK)),

		       nid, K(node_page_state(nid, NR_FILE_PAGES)),

		       nid, K(node_page_state(nid, NR_FILE_MAPPED)),

#ifdef CONFIG_TRANSPARENT_HUGEPAGE

		       nid, K(node_page_state(nid, NR_ANON_PAGES)

			+ node_page_state(nid, NR_ANON_TRANSPARENT_HUGEPAGES) *

			HPAGE_PMD_NR),

#else

		       nid, K(node_page_state(nid, NR_ANON_PAGES)),

#endif

		       nid, K(node_page_state(nid, NR_SHMEM)),

		       nid, node_page_state(nid, NR_KERNEL_STACK) *

				THREAD_SIZE / 1024,

fs/proc/meminfo.c

+0 −6
Original line number Diff line number Diff line
@@ -132,13 +132,7 @@ static int meminfo_proc_show(struct seq_file *m, void *v) 
		K(i.freeswap),

		K(global_page_state(NR_FILE_DIRTY)),

		K(global_page_state(NR_WRITEBACK)),

#ifdef CONFIG_TRANSPARENT_HUGEPAGE

		K(global_page_state(NR_ANON_PAGES)

		  + global_page_state(NR_ANON_TRANSPARENT_HUGEPAGES) *

		  HPAGE_PMD_NR),

#else

		K(global_page_state(NR_ANON_PAGES)),

#endif

		K(global_page_state(NR_FILE_MAPPED)),

		K(global_page_state(NR_SHMEM)),

		K(global_page_state(NR_SLAB_RECLAIMABLE) +

mm/huge_memory.c

+0 −1
Original line number Diff line number Diff line
@@ -1661,7 +1661,6 @@ static void __split_huge_page_refcount(struct page *page, 
	BUG_ON(atomic_read(&page->_count) <= 0);



	__mod_zone_page_state(zone, NR_ANON_TRANSPARENT_HUGEPAGES, -1);

	__mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR);



	ClearPageCompound(page);

	compound_unlock(page);

mm/rmap.c

+9 −9
Original line number Diff line number Diff line
@@ -1052,11 +1052,11 @@ void do_page_add_anon_rmap(struct page *page, 
{

	int first = atomic_inc_and_test(&page->_mapcount);

	if (first) {

		if (!PageTransHuge(page))

			__inc_zone_page_state(page, NR_ANON_PAGES);

		else

		if (PageTransHuge(page))

			__inc_zone_page_state(page,

					      NR_ANON_TRANSPARENT_HUGEPAGES);

		__mod_zone_page_state(page_zone(page), NR_ANON_PAGES,

				hpage_nr_pages(page));

	}

	if (unlikely(PageKsm(page)))

		return;
@@ -1085,10 +1085,10 @@ void page_add_new_anon_rmap(struct page *page, 
	VM_BUG_ON(address < vma->vm_start || address >= vma->vm_end);

	SetPageSwapBacked(page);

	atomic_set(&page->_mapcount, 0); /* increment count (starts at -1) */

	if (!PageTransHuge(page))

		__inc_zone_page_state(page, NR_ANON_PAGES);

	else

	if (PageTransHuge(page))

		__inc_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES);

	__mod_zone_page_state(page_zone(page), NR_ANON_PAGES,

			hpage_nr_pages(page));

	__page_set_anon_rmap(page, vma, address, 1);

	if (!mlocked_vma_newpage(vma, page)) {

		SetPageActive(page);
@@ -1148,11 +1148,11 @@ void page_remove_rmap(struct page *page) 
		goto out;

	if (anon) {

		mem_cgroup_uncharge_page(page);

		if (!PageTransHuge(page))

			__dec_zone_page_state(page, NR_ANON_PAGES);

		else

		if (PageTransHuge(page))

			__dec_zone_page_state(page,

					      NR_ANON_TRANSPARENT_HUGEPAGES);

		__mod_zone_page_state(page_zone(page), NR_ANON_PAGES,

				-hpage_nr_pages(page));

	} else {

		__dec_zone_page_state(page, NR_FILE_MAPPED);

		mem_cgroup_dec_page_stat(page, MEM_CGROUP_STAT_FILE_MAPPED);

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