[PATCH 14/25] mm: Rename NR_ANON_PAGES to NR_ANON_MAPPED

[Mel Gorman <mgorman@suse.de>]

NR_FILE_PAGES  is the number of        file pages.
NR_FILE_MAPPED is the number of mapped file pages.
NR_ANON_PAGES  is the number of mapped anon pages.

This is unhelpful naming as it's easy to confuse NR_FILE_MAPPED and NR_ANON_PAGES for
mapped pages. This patch renames NR_ANON_PAGES so we have

NR_FILE_PAGES  is the number of        file pages.
NR_FILE_MAPPED is the number of mapped file pages.
NR_ANON_MAPPED is the number of mapped anon pages.

Signed-off-by: Mel Gorman <mgorman@suse.de>
---
 fs/proc/meminfo.c      | 2 +-
 include/linux/mmzone.h | 2 +-
 mm/migrate.c           | 2 +-
 mm/rmap.c              | 8 ++++----
 4 files changed, 7 insertions(+), 7 deletions(-)

diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 8f105c774b2e..2072876cce7c 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -173,7 +173,7 @@ 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)),
-		K(global_node_page_state(NR_ANON_PAGES)),
+		K(global_node_page_state(NR_ANON_MAPPED)),
 		K(global_node_page_state(NR_FILE_MAPPED)),
 		K(i.sharedram),
 		K(global_page_state(NR_SLAB_RECLAIMABLE) +
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index a523e1a30e54..4406f855d58e 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -157,7 +157,7 @@ enum node_stat_item {
 	WORKINGSET_REFAULT,
 	WORKINGSET_ACTIVATE,
 	WORKINGSET_NODERECLAIM,
-	NR_ANON_PAGES,	/* Mapped anonymous pages */
+	NR_ANON_MAPPED,	/* Mapped anonymous pages */
 	NR_FILE_MAPPED,	/* pagecache pages mapped into pagetables.
 			   only modified from process context */
 	NR_VM_NODE_STAT_ITEMS
diff --git a/mm/migrate.c b/mm/migrate.c
index a33e4b4ed60d..4a50bb7c06a6 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -376,7 +376,7 @@ int migrate_page_move_mapping(struct address_space *mapping,
 	 * new page and drop references to the old page.
 	 *
 	 * Note that anonymous pages are accounted for
-	 * via NR_FILE_PAGES and NR_ANON_PAGES if they
+	 * via NR_FILE_PAGES and NR_ANON_MAPPED if they
 	 * are mapped to swap space.
 	 */
 	__dec_zone_page_state(page, NR_FILE_PAGES);
diff --git a/mm/rmap.c b/mm/rmap.c
index f2ce8d11bed6..e6bf7a205913 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1047,7 +1047,7 @@ void do_page_add_anon_rmap(struct page *page,
 			__inc_zone_page_state(page,
 					      NR_ANON_TRANSPARENT_HUGEPAGES);
 		__mod_node_page_state(page_zone(page)->zone_pgdat,
-				NR_ANON_PAGES, hpage_nr_pages(page));
+				NR_ANON_MAPPED, hpage_nr_pages(page));
 	}
 	if (unlikely(PageKsm(page)))
 		return;
@@ -1078,7 +1078,7 @@ void page_add_new_anon_rmap(struct page *page,
 	atomic_set(&page->_mapcount, 0); /* increment count (starts at -1) */
 	if (PageTransHuge(page))
 		__inc_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES);
-	__mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_PAGES,
+	__mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_MAPPED,
 			hpage_nr_pages(page));
 	__page_set_anon_rmap(page, vma, address, 1);
 }
@@ -1146,7 +1146,7 @@ void page_remove_rmap(struct page *page)
 	if (!atomic_add_negative(-1, &page->_mapcount))
 		return;
 
-	/* Hugepages are not counted in NR_ANON_PAGES for now. */
+	/* Hugepages are not counted in NR_ANON_MAPPED for now. */
 	if (unlikely(PageHuge(page)))
 		return;
 
@@ -1158,7 +1158,7 @@ void page_remove_rmap(struct page *page)
 	if (PageTransHuge(page))
 		__dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES);
 
-	__mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_PAGES,
+	__mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_MAPPED,
 			      -hpage_nr_pages(page));
 
 	if (unlikely(PageMlocked(page)))
-- 
2.3.5

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