mm: move page mapped accounting to the node

Reclaim makes decisions based on the number of pages that are mapped but
it's mixing node and zone information.  Account NR_FILE_MAPPED and
NR_ANON_PAGES pages on the node.

Link: http://lkml.kernel.org/r/1467970510-21195-18-git-send-email-mgorman@techsingularity.net
Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Acked-by: Michal Hocko <mhocko@suse.com>
Cc: Hillf Danton <hillf.zj@alibaba-inc.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Joonsoo Kim <iamjoonsoo.kim@lge.com>
Cc: Minchan Kim <minchan@kernel.org>
Cc: Rik van Riel <riel@surriel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 9e38921..c606b0e 100644 (file)
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -55,7 +55,7 @@ void show_mem(unsigned int filter)
               global_page_state(NR_FREE_PAGES),
               (global_page_state(NR_SLAB_RECLAIMABLE) +
                global_page_state(NR_SLAB_UNRECLAIMABLE)),
-              global_page_state(NR_FILE_MAPPED),
+              global_node_page_state(NR_FILE_MAPPED),
               global_page_state(NR_PAGETABLE),
               global_page_state(NR_BOUNCE),
               global_page_state(NR_FILE_PAGES),

diff --git a/drivers/base/node.c b/drivers/base/node.c
index d4698f0..171ea12 100644 (file)
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -121,8 +121,8 @@ static ssize_t node_read_meminfo(struct device *dev,
                       nid, K(sum_zone_node_page_state(nid, NR_FILE_DIRTY)),
                       nid, K(sum_zone_node_page_state(nid, NR_WRITEBACK)),
                       nid, K(sum_zone_node_page_state(nid, NR_FILE_PAGES)),
-                      nid, K(sum_zone_node_page_state(nid, NR_FILE_MAPPED)),
-                      nid, K(sum_zone_node_page_state(nid, NR_ANON_PAGES)),
+                      nid, K(node_page_state(pgdat, NR_FILE_MAPPED)),
+                      nid, K(node_page_state(pgdat, NR_ANON_PAGES)),
                       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 cf301a9..b8d52aa 100644 (file)
--- a/fs/proc/meminfo.c
+++ b/fs/proc/meminfo.c
@@ -140,8 +140,8 @@ 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_page_state(NR_ANON_PAGES)),
-               K(global_page_state(NR_FILE_MAPPED)),
+               K(global_node_page_state(NR_ANON_PAGES)),
+               K(global_node_page_state(NR_FILE_MAPPED)),
                K(i.sharedram),
                K(global_page_state(NR_SLAB_RECLAIMABLE) +
                                global_page_state(NR_SLAB_UNRECLAIMABLE)),

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index fae2fe3..95d34d1 100644 (file)
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -115,9 +115,6 @@ enum zone_stat_item {
        NR_ZONE_LRU_ANON = NR_ZONE_LRU_BASE,
        NR_ZONE_LRU_FILE,
        NR_MLOCK,               /* mlock()ed pages found and moved off LRU */
-       NR_ANON_PAGES,  /* Mapped anonymous pages */
-       NR_FILE_MAPPED, /* pagecache pages mapped into pagetables.
-                          only modified from process context */
        NR_FILE_PAGES,
        NR_FILE_DIRTY,
        NR_WRITEBACK,
@@ -164,6 +161,9 @@ enum node_stat_item {
        WORKINGSET_REFAULT,
        WORKINGSET_ACTIVATE,
        WORKINGSET_NODERECLAIM,
+       NR_ANON_PAGES,  /* 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/page_alloc.c b/mm/page_alloc.c
index 73b018d..c11935b 100644 (file)
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -4312,7 +4312,7 @@ void show_free_areas(unsigned int filter)
                global_page_state(NR_UNSTABLE_NFS),
                global_page_state(NR_SLAB_RECLAIMABLE),
                global_page_state(NR_SLAB_UNRECLAIMABLE),
-               global_page_state(NR_FILE_MAPPED),
+               global_node_page_state(NR_FILE_MAPPED),
                global_page_state(NR_SHMEM),
                global_page_state(NR_PAGETABLE),
                global_page_state(NR_BOUNCE),
@@ -4334,6 +4334,7 @@ void show_free_areas(unsigned int filter)
                        " unevictable:%lukB"
                        " isolated(anon):%lukB"
                        " isolated(file):%lukB"
+                       " mapped:%lukB"
                        " all_unreclaimable? %s"
                        "\n",
                        pgdat->node_id,
@@ -4344,6 +4345,7 @@ void show_free_areas(unsigned int filter)
                        K(node_page_state(pgdat, NR_UNEVICTABLE)),
                        K(node_page_state(pgdat, NR_ISOLATED_ANON)),
                        K(node_page_state(pgdat, NR_ISOLATED_FILE)),
+                       K(node_page_state(pgdat, NR_FILE_MAPPED)),
                        !pgdat_reclaimable(pgdat) ? "yes" : "no");
        }
 
@@ -4368,7 +4370,6 @@ void show_free_areas(unsigned int filter)
                        " mlocked:%lukB"
                        " dirty:%lukB"
                        " writeback:%lukB"
-                       " mapped:%lukB"
                        " shmem:%lukB"
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
                        " shmem_thp: %lukB"
@@ -4397,7 +4398,6 @@ void show_free_areas(unsigned int filter)
                        K(zone_page_state(zone, NR_MLOCK)),
                        K(zone_page_state(zone, NR_FILE_DIRTY)),
                        K(zone_page_state(zone, NR_WRITEBACK)),
-                       K(zone_page_state(zone, NR_FILE_MAPPED)),
                        K(zone_page_state(zone, NR_SHMEM)),
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
                        K(zone_page_state(zone, NR_SHMEM_THPS) * HPAGE_PMD_NR),

diff --git a/mm/rmap.c b/mm/rmap.c
index dc28bfe..a46aef3 100644 (file)
--- a/mm/rmap.c
+++ b/mm/rmap.c
@@ -1214,7 +1214,7 @@ void do_page_add_anon_rmap(struct page *page,
                 */
                if (compound)
                        __inc_zone_page_state(page, NR_ANON_THPS);
-               __mod_zone_page_state(page_zone(page), NR_ANON_PAGES, nr);
+               __mod_node_page_state(page_pgdat(page), NR_ANON_PAGES, nr);
        }
        if (unlikely(PageKsm(page)))
                return;
@@ -1258,7 +1258,7 @@ void page_add_new_anon_rmap(struct page *page,
                /* increment count (starts at -1) */
                atomic_set(&page->_mapcount, 0);
        }
-       __mod_zone_page_state(page_zone(page), NR_ANON_PAGES, nr);
+       __mod_node_page_state(page_pgdat(page), NR_ANON_PAGES, nr);
        __page_set_anon_rmap(page, vma, address, 1);
 }
 
@@ -1293,7 +1293,7 @@ void page_add_file_rmap(struct page *page, bool compound)
                if (!atomic_inc_and_test(&page->_mapcount))
                        goto out;
        }
-       __mod_zone_page_state(page_zone(page), NR_FILE_MAPPED, nr);
+       __mod_node_page_state(page_pgdat(page), NR_FILE_MAPPED, nr);
        mem_cgroup_inc_page_stat(page, MEM_CGROUP_STAT_FILE_MAPPED);
 out:
        unlock_page_memcg(page);
@@ -1329,11 +1329,11 @@ static void page_remove_file_rmap(struct page *page, bool compound)
        }
 
        /*
-        * We use the irq-unsafe __{inc|mod}_zone_page_stat because
+        * We use the irq-unsafe __{inc|mod}_zone_page_state because
         * these counters are not modified in interrupt context, and
         * pte lock(a spinlock) is held, which implies preemption disabled.
         */
-       __mod_zone_page_state(page_zone(page), NR_FILE_MAPPED, -nr);
+       __mod_node_page_state(page_pgdat(page), NR_FILE_MAPPED, -nr);
        mem_cgroup_dec_page_stat(page, MEM_CGROUP_STAT_FILE_MAPPED);
 
        if (unlikely(PageMlocked(page)))
@@ -1375,7 +1375,7 @@ static void page_remove_anon_compound_rmap(struct page *page)
                clear_page_mlock(page);
 
        if (nr) {
-               __mod_zone_page_state(page_zone(page), NR_ANON_PAGES, -nr);
+               __mod_node_page_state(page_pgdat(page), NR_ANON_PAGES, -nr);
                deferred_split_huge_page(page);
        }
 }
@@ -1404,7 +1404,7 @@ 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_zone_page_state(page, NR_ANON_PAGES);
+       __dec_node_page_state(page, NR_ANON_PAGES);
 
        if (unlikely(PageMlocked(page)))
                clear_page_mlock(page);

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 9f6e673..90b4665 100644 (file)
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3589,7 +3589,7 @@ int sysctl_min_slab_ratio = 5;
 
 static inline unsigned long zone_unmapped_file_pages(struct zone *zone)
 {
-       unsigned long file_mapped = zone_page_state(zone, NR_FILE_MAPPED);
+       unsigned long file_mapped = node_page_state(zone->zone_pgdat, NR_FILE_MAPPED);
        unsigned long file_lru = node_page_state(zone->zone_pgdat, NR_INACTIVE_FILE) +
                node_page_state(zone->zone_pgdat, NR_ACTIVE_FILE);
 

diff --git a/mm/vmstat.c b/mm/vmstat.c
index d17d66e..02e7406 100644 (file)
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -925,8 +925,6 @@ const char * const vmstat_text[] = {
        "nr_zone_anon_lru",
        "nr_zone_file_lru",
        "nr_mlock",
-       "nr_anon_pages",
-       "nr_mapped",
        "nr_file_pages",
        "nr_dirty",
        "nr_writeback",
@@ -970,6 +968,8 @@ const char * const vmstat_text[] = {
        "workingset_refault",
        "workingset_activate",
        "workingset_nodereclaim",
+       "nr_anon_pages",
+       "nr_mapped",
 
        /* enum writeback_stat_item counters */
        "nr_dirty_threshold",