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 <mgor...@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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