[PATCH 17/27] mm: Rename NR_ANON_PAGES to NR_ANON_MAPPED

Mel Gorman
2016-06-09T18:07:56Z

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@techsingularity.net>
---
drivers/base/node.c | 2 +-
fs/proc/meminfo.c | 2 +-
include/linux/mmzone.h | 2 +-
mm/migrate.c | 2 +-
mm/rmap.c | 8 ++++----
5 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/base/node.c b/drivers/base/node.c
index 66aed68a0fdc..897b6bcb36be 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -120,7 +120,7 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(sum_zone_node_page_state(nid, NR_WRITEBACK)),
nid, K(sum_zone_node_page_state(nid, NR_FILE_PAGES)),
nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
- nid, K(node_page_state(pgdat, NR_ANON_PAGES)),
+ nid, K(node_page_state(pgdat, NR_ANON_MAPPED)),
nid, K(i.sharedram),
nid, sum_zone_node_page_state(nid, NR_KERNEL_STACK) *
THREAD_SIZE / 1024,
diff --git a/fs/proc/meminfo.c b/fs/proc/meminfo.c
index 54e039682ec9..076afb43fc56 100644
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -138,7 +138,7 @@ 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 eac00a55e098..8fbb2a1f7a0f 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -156,7 +156,7 @@ 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 cff5d6aa2240..133772d8f08f 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -501,7 +501,7 @@ 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.
*/
if (newzone != oldzone) {
diff --git a/mm/rmap.c b/mm/rmap.c
index ab3d7a3151c3..45443d488e92 100644
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1220,7 +1220,7 @@ void do_page_add_anon_rmap(struct page *page,
NR_ANON_TRANSPARENT_HUGEPAGES);
}
__mod_node_page_state(page_zone(page)->zone_pgdat,
- NR_ANON_PAGES, nr);
+ NR_ANON_MAPPED, nr);
}
if (unlikely(PageKsm(page)))
return;
@@ -1264,7 +1264,7 @@ void page_add_new_anon_rmap(struct page *page,
/* increment count (starts at -1) */
atomic_set(&page->_mapcount, 0);
}
- __mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_PAGES, nr);
+ __mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_MAPPED, nr);
__page_set_anon_rmap(page, vma, address, 1);
}

@@ -1346,7 +1346,7 @@ static void page_remove_anon_compound_rmap(struct page *page)
clear_page_mlock(page);

if (nr) {
- __mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_PAGES, -nr);
+ __mod_node_page_state(page_zone(page)->zone_pgdat, NR_ANON_MAPPED, -nr);
deferred_split_huge_page(page);
}
}
@@ -1378,7 +1378,7 @@ void page_remove_rmap(struct page *page, bool compound)
* these counters are not modified in interrupt context, and
* pte lock(a spinlock) is held, which implies preemption disabled.
*/
- __dec_node_page_state(page, NR_ANON_PAGES);
+ __dec_node_page_state(page, NR_ANON_MAPPED);

if (unlikely(PageMlocked(page)))
clear_page_mlock(page);
--
2.6.4