[PATCH 05/27] mm, vmscan: Move LRU lists to node

Mel Gorman
2016-02-23T15:07:09Z

This moves the LRU lists from the zone to the node and all related data
such as counters, tracing, congestion tracking and writeback tracking.
This is mostly a mechanical patch but note that it introduces a number
of anomalies. For example, the scans are per-zone but using per-node
counters. We also mark a node as congested when a zone is congested. This
causes weird problems that are fixed later but is easier to review.

Signed-off-by: Mel Gorman <mgorman@techsingularity.net>
---
arch/tile/mm/pgtable.c | 8 +-
drivers/base/node.c | 19 +--
drivers/staging/android/lowmemorykiller.c | 8 +-
include/linux/backing-dev.h | 2 +-
include/linux/memcontrol.h | 8 +-
include/linux/mm_inline.h | 4 +-
include/linux/mmzone.h | 66 ++++++----
include/linux/swap.h | 2 +-
include/linux/vm_event_item.h | 10 +-
include/linux/vmstat.h | 18 +++
include/trace/events/vmscan.h | 12 +-
kernel/power/snapshot.c | 10 +-
mm/backing-dev.c | 15 ++-
mm/compaction.c | 18 +--
mm/huge_memory.c | 6 +-
mm/internal.h | 2 +-
mm/memcontrol.c | 18 +--
mm/memory-failure.c | 4 +-
mm/memory_hotplug.c | 2 +-
mm/mempolicy.c | 2 +-
mm/migrate.c | 21 +--
mm/mlock.c | 2 +-
mm/page-writeback.c | 8 +-
mm/page_alloc.c | 99 ++++++++------
mm/swap.c | 56 ++++----
mm/vmscan.c | 210 ++++++++++++++++--------------
mm/vmstat.c | 45 +++----
27 files changed, 368 insertions(+), 307 deletions(-)

diff --git a/arch/tile/mm/pgtable.c b/arch/tile/mm/pgtable.c
index 7bf2491a9c1f..3ed0a666d44a 100644
--- a/arch/tile/mm/pgtable.c
+++ b/arch/tile/mm/pgtable.c
@@ -45,10 +45,10 @@ void show_mem(unsigned int filter)
struct zone *zone;

pr_err("Active:%lu inactive:%lu dirty:%lu writeback:%lu unstable:%lu free:%lu\n slab:%lu mapped:%lu pagetables:%lu bounce:%lu pagecache:%lu swap:%lu\n",
- (global_page_state(NR_ACTIVE_ANON) +
- global_page_state(NR_ACTIVE_FILE)),
- (global_page_state(NR_INACTIVE_ANON) +
- global_page_state(NR_INACTIVE_FILE)),
+ (global_node_page_state(NR_ACTIVE_ANON) +
+ global_node_page_state(NR_ACTIVE_FILE)),
+ (global_node_page_state(NR_INACTIVE_ANON) +
+ global_node_page_state(NR_INACTIVE_FILE)),
global_page_state(NR_FILE_DIRTY),
global_page_state(NR_WRITEBACK),
global_page_state(NR_UNSTABLE_NFS),
diff --git a/drivers/base/node.c b/drivers/base/node.c
index efb81da250a8..4260c7f3ee1b 100644
--- a/drivers/base/node.c
+++ b/drivers/base/node.c
@@ -56,6 +56,7 @@ static ssize_t node_read_meminfo(struct device *dev,
{
int n;
int nid = dev->id;
+ struct pglist_data *pgdat = NODE_DATA(nid);
struct sysinfo i;

si_meminfo_node(&i, nid);
@@ -74,15 +75,15 @@ static ssize_t node_read_meminfo(struct device *dev,
nid, K(i.totalram),
nid, K(i.freeram),
nid, K(i.totalram - i.freeram),
- nid, K(sum_zone_node_page_state(nid, NR_ACTIVE_ANON) +
- sum_zone_node_page_state(nid, NR_ACTIVE_FILE)),
- nid, K(sum_zone_node_page_state(nid, NR_INACTIVE_ANON) +
- sum_zone_node_page_state(nid, NR_INACTIVE_FILE)),
- nid, K(sum_zone_node_page_state(nid, NR_ACTIVE_ANON)),
- nid, K(sum_zone_node_page_state(nid, NR_INACTIVE_ANON)),
- nid, K(sum_zone_node_page_state(nid, NR_ACTIVE_FILE)),
- nid, K(sum_zone_node_page_state(nid, NR_INACTIVE_FILE)),
- nid, K(sum_zone_node_page_state(nid, NR_UNEVICTABLE)),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_ANON) +
+ node_page_state(pgdat, NR_ACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_ANON) +
+ node_page_state(pgdat, NR_INACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_ANON)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_ANON)),
+ nid, K(node_page_state(pgdat, NR_ACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_INACTIVE_FILE)),
+ nid, K(node_page_state(pgdat, NR_UNEVICTABLE)),
nid, K(sum_zone_node_page_state(nid, NR_MLOCK)));

#ifdef CONFIG_HIGHMEM
diff --git a/drivers/staging/android/lowmemorykiller.c b/drivers/staging/android/lowmemorykiller.c
index 4b8a56cda6ca..7d677791d13a 100644
--- a/drivers/staging/android/lowmemorykiller.c
+++ b/drivers/staging/android/lowmemorykiller.c
@@ -70,10 +70,10 @@ static unsigned long lowmem_deathpending_timeout;
static unsigned long lowmem_count(struct shrinker *s,
struct shrink_control *sc)
{
- return global_page_state(NR_ACTIVE_ANON) +
- global_page_state(NR_ACTIVE_FILE) +
- global_page_state(NR_INACTIVE_ANON) +
- global_page_state(NR_INACTIVE_FILE);
+ return global_node_page_state(NR_ACTIVE_ANON) +
+ global_node_page_state(NR_ACTIVE_FILE) +
+ global_node_page_state(NR_INACTIVE_ANON) +
+ global_node_page_state(NR_INACTIVE_FILE);
}

static unsigned long lowmem_scan(struct shrinker *s, struct shrink_control *sc)
diff --git a/include/linux/backing-dev.h b/include/linux/backing-dev.h
index c82794f20110..491a91717788 100644
--- a/include/linux/backing-dev.h
+++ b/include/linux/backing-dev.h
@@ -197,7 +197,7 @@ static inline int wb_congested(struct bdi_writeback *wb, int cong_bits)
}

long congestion_wait(int sync, long timeout);
-long wait_iff_congested(struct zone *zone, int sync, long timeout);
+long wait_iff_congested(struct pglist_data *pgdat, int sync, long timeout);
int pdflush_proc_obsolete(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp, loff_t *ppos);

diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index 1191d79aa495..f5626a5c88c2 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -307,7 +307,7 @@ void mem_cgroup_uncharge_list(struct list_head *page_list);
void mem_cgroup_migrate(struct page *oldpage, struct page *newpage);

struct lruvec *mem_cgroup_zone_lruvec(struct zone *, struct mem_cgroup *);
-struct lruvec *mem_cgroup_page_lruvec(struct page *, struct zone *);
+struct lruvec *mem_cgroup_page_lruvec(struct page *, struct pglist_data *);

bool task_in_mem_cgroup(struct task_struct *task, struct mem_cgroup *memcg);
struct mem_cgroup *mem_cgroup_from_task(struct task_struct *p);
@@ -595,13 +595,13 @@ static inline void mem_cgroup_migrate(struct page *old, struct page *new)
static inline struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
struct mem_cgroup *memcg)
{
- return &zone->lruvec;
+ return zone_lruvec(zone);
}

static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
- struct zone *zone)
+ struct pglist_data *pgdat)
{
- return &zone->lruvec;
+ return &pgdat->lruvec;
}

static inline bool mm_match_cgroup(struct mm_struct *mm,
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 712e8c37a200..5817ae41ba30 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -28,7 +28,7 @@ static __always_inline void add_page_to_lru_list(struct page *page,
int nr_pages = hpage_nr_pages(page);
mem_cgroup_update_lru_size(lruvec, lru, nr_pages);
list_add(&page->lru, &lruvec->lists[lru]);
- __mod_zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru, nr_pages);
+ __mod_node_page_state(page_zone(page)->zone_pgdat, NR_LRU_BASE + lru, nr_pages);
}

static __always_inline void del_page_from_lru_list(struct page *page,
@@ -37,7 +37,7 @@ static __always_inline void del_page_from_lru_list(struct page *page,
int nr_pages = hpage_nr_pages(page);
mem_cgroup_update_lru_size(lruvec, lru, -nr_pages);
list_del(&page->lru);
- __mod_zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru, -nr_pages);
+ __mod_node_page_state(page_zone(page)->zone_pgdat, NR_LRU_BASE + lru, -nr_pages);
}

/**
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 86539225067e..93151a9a4f56 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h
@@ -118,12 +118,6 @@ enum zone_stat_item {
/* First 128 byte cacheline (assuming 64 bit words) */
NR_FREE_PAGES,
NR_ALLOC_BATCH,
- NR_LRU_BASE,
- NR_INACTIVE_ANON = NR_LRU_BASE, /* must match order of LRU_[IN]ACTIVE */
- NR_ACTIVE_ANON, /* " " " " " */
- NR_INACTIVE_FILE, /* " " " " " */
- NR_ACTIVE_FILE, /* " " " " " */
- NR_UNEVICTABLE, /* " " " " " */
NR_MLOCK, /* mlock()ed pages found and moved off LRU */
NR_ANON_PAGES, /* Mapped anonymous pages */
NR_FILE_MAPPED, /* pagecache pages mapped into pagetables.
@@ -141,12 +135,9 @@ enum zone_stat_item {
NR_VMSCAN_WRITE,
NR_VMSCAN_IMMEDIATE, /* Prioritise for reclaim when writeback ends */
NR_WRITEBACK_TEMP, /* Writeback using temporary buffers */
- NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */
- NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */
NR_SHMEM, /* shmem pages (included tmpfs/GEM pages) */
NR_DIRTIED, /* page dirtyings since bootup */
NR_WRITTEN, /* page writings since bootup */
- NR_PAGES_SCANNED, /* pages scanned since last reclaim */
#ifdef CONFIG_NUMA
NUMA_HIT, /* allocated in intended node */
NUMA_MISS, /* allocated in non intended node */
@@ -163,6 +154,15 @@ enum zone_stat_item {
NR_VM_ZONE_STAT_ITEMS };

enum node_stat_item {
+ NR_LRU_BASE,
+ NR_INACTIVE_ANON = NR_LRU_BASE, /* must match order of LRU_[IN]ACTIVE */
+ NR_ACTIVE_ANON, /* " " " " " */
+ NR_INACTIVE_FILE, /* " " " " " */
+ NR_ACTIVE_FILE, /* " " " " " */
+ NR_UNEVICTABLE, /* " " " " " */
+ NR_ISOLATED_ANON, /* Temporary isolated pages from anon lru */
+ NR_ISOLATED_FILE, /* Temporary isolated pages from file lru */
+ NR_PAGES_SCANNED, /* pages scanned since last reclaim */
NR_VM_NODE_STAT_ITEMS
};

@@ -221,7 +221,7 @@ struct lruvec {
/* Evictions & activations on the inactive file list */
atomic_long_t inactive_age;
#ifdef CONFIG_MEMCG
- struct zone *zone;
+ struct pglist_data *pgdat;
#endif
};

@@ -359,13 +359,6 @@ struct zone {
#ifdef CONFIG_NUMA
int node;
#endif
-
- /*
- * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
- * this zone's LRU. Maintained by the pageout code.
- */
- unsigned int inactive_ratio;
-
struct pglist_data *zone_pgdat;
struct per_cpu_pageset __percpu *pageset;

@@ -497,9 +490,6 @@ struct zone {

/* Write-intensive fields used by page reclaim */

- /* Fields commonly accessed by the page reclaim scanner */
- struct lruvec lruvec;
-
/*
* When free pages are below this point, additional steps are taken
* when reading the number of free pages to avoid per-cpu counter
@@ -540,17 +530,20 @@ struct zone {
enum zone_flags {
ZONE_RECLAIM_LOCKED, /* prevents concurrent reclaim */
ZONE_OOM_LOCKED, /* zone is in OOM killer zonelist */
- ZONE_CONGESTED, /* zone has many dirty pages backed by
+ ZONE_FAIR_DEPLETED, /* fair zone policy batch depleted */
+};
+
+enum pgdat_flags {
+ PGDAT_CONGESTED, /* zone has many dirty pages backed by
* a congested BDI
*/
- ZONE_DIRTY, /* reclaim scanning has recently found
+ PGDAT_DIRTY, /* reclaim scanning has recently found
* many dirty file pages at the tail
* of the LRU.
*/
- ZONE_WRITEBACK, /* reclaim scanning has recently found
+ PGDAT_WRITEBACK, /* reclaim scanning has recently found
* many pages under writeback
*/
- ZONE_FAIR_DEPLETED, /* fair zone policy batch depleted */
};

static inline unsigned long zone_end_pfn(const struct zone *zone)
@@ -704,12 +697,26 @@ typedef struct pglist_data {
unsigned long first_deferred_pfn;
#endif /* CONFIG_DEFERRED_STRUCT_PAGE_INIT */

+
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
spinlock_t split_queue_lock;
struct list_head split_queue;
unsigned long split_queue_len;
#endif

+ /* Fields commonly accessed by the page reclaim scanner */
+ struct lruvec lruvec;
+
+ /*
+ * The target ratio of ACTIVE_ANON to INACTIVE_ANON pages on
+ * this node's LRU. Maintained by the pageout code.
+ */
+ unsigned int inactive_ratio;
+
+ unsigned long flags;
+
+ ZONE_PADDING(_pad2_)
+
/* Per-node vmstats */
struct per_cpu_nodestat __percpu *per_cpu_nodestats;
atomic_long_t vm_stat[NR_VM_NODE_STAT_ITEMS];
@@ -731,6 +738,11 @@ static inline spinlock_t *zone_lru_lock(struct zone *zone)
return &zone->zone_pgdat->lru_lock;
}

+static inline struct lruvec *zone_lruvec(struct zone *zone)
+{
+ return &zone->zone_pgdat->lruvec;
+}
+
static inline unsigned long pgdat_end_pfn(pg_data_t *pgdat)
{
return pgdat->node_start_pfn + pgdat->node_spanned_pages;
@@ -778,12 +790,12 @@ extern int init_currently_empty_zone(struct zone *zone, unsigned long start_pfn,

extern void lruvec_init(struct lruvec *lruvec);

-static inline struct zone *lruvec_zone(struct lruvec *lruvec)
+static inline struct pglist_data *lruvec_pgdat(struct lruvec *lruvec)
{
#ifdef CONFIG_MEMCG
- return lruvec->zone;
+ return lruvec->pgdat;
#else
- return container_of(lruvec, struct zone, lruvec);
+ return container_of(lruvec, struct pglist_data, lruvec);
#endif
}

diff --git a/include/linux/swap.h b/include/linux/swap.h
index b14a2bb33514..a776f6506522 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -316,7 +316,7 @@ extern void lru_cache_add_active_or_unevictable(struct page *page,
struct vm_area_struct *vma);

/* linux/mm/vmscan.c */
-extern unsigned long zone_reclaimable_pages(struct zone *zone);
+extern unsigned long pgdat_reclaimable_pages(pg_data_t *pgdat);
extern unsigned long try_to_free_pages(struct zonelist *zonelist, int order,
gfp_t gfp_mask, nodemask_t *mask);
extern int __isolate_lru_page(struct page *page, isolate_mode_t mode);
diff --git a/include/linux/vm_event_item.h b/include/linux/vm_event_item.h
index ec084321fe09..8dcb5a813163 100644
--- a/include/linux/vm_event_item.h
+++ b/include/linux/vm_event_item.h
@@ -26,11 +26,11 @@ enum vm_event_item { PGPGIN, PGPGOUT, PSWPIN, PSWPOUT,
PGFREE, PGACTIVATE, PGDEACTIVATE,
PGFAULT, PGMAJFAULT,
PGLAZYFREED,
- FOR_ALL_ZONES(PGREFILL),
- FOR_ALL_ZONES(PGSTEAL_KSWAPD),
- FOR_ALL_ZONES(PGSTEAL_DIRECT),
- FOR_ALL_ZONES(PGSCAN_KSWAPD),
- FOR_ALL_ZONES(PGSCAN_DIRECT),
+ PGREFILL,
+ PGSTEAL_KSWAPD,
+ PGSTEAL_DIRECT,
+ PGSCAN_KSWAPD,
+ PGSCAN_DIRECT,
PGSCAN_DIRECT_THROTTLE,
#ifdef CONFIG_NUMA
PGSCAN_ZONE_RECLAIM_FAILED,
diff --git a/include/linux/vmstat.h b/include/linux/vmstat.h
index d9f8889263b6..8a43f7b80c20 100644
--- a/include/linux/vmstat.h
+++ b/include/linux/vmstat.h
@@ -178,6 +178,23 @@ static inline unsigned long zone_page_state_snapshot(struct zone *zone,
return x;
}

+static inline unsigned long node_page_state_snapshot(pg_data_t *pgdat,
+ enum zone_stat_item item)
+{
+ long x = atomic_long_read(&pgdat->vm_stat[item]);
+
+#ifdef CONFIG_SMP
+ int cpu;
+ for_each_online_cpu(cpu)
+ x += per_cpu_ptr(pgdat->per_cpu_nodestats, cpu)->vm_node_stat_diff[item];
+
+ if (x < 0)
+ x = 0;
+#endif
+ return x;
+}
+
+
#ifdef CONFIG_NUMA
extern unsigned long sum_zone_node_page_state(int node,
enum zone_stat_item item);
@@ -187,6 +204,7 @@ extern void zone_statistics(struct zone *, struct zone *, gfp_t gfp);

#else

+#define sum_zone_node_page_state(node, item) global_node_page_state(item)
#define node_page_state(node, item) global_node_page_state(item)
#define zone_statistics(_zl, _z, gfp) do { } while (0)

diff --git a/include/trace/events/vmscan.h b/include/trace/events/vmscan.h
index 0101ef37f1ee..897f1aa1ee5f 100644
--- a/include/trace/events/vmscan.h
+++ b/include/trace/events/vmscan.h
@@ -352,15 +352,14 @@ TRACE_EVENT(mm_vmscan_writepage,

TRACE_EVENT(mm_vmscan_lru_shrink_inactive,

- TP_PROTO(struct zone *zone,
+ TP_PROTO(int nid,
unsigned long nr_scanned, unsigned long nr_reclaimed,
int priority, int file),

- TP_ARGS(zone, nr_scanned, nr_reclaimed, priority, file),
+ TP_ARGS(nid, nr_scanned, nr_reclaimed, priority, file),

TP_STRUCT__entry(
__field(int, nid)
- __field(int, zid)
__field(unsigned long, nr_scanned)
__field(unsigned long, nr_reclaimed)
__field(int, priority)
@@ -368,16 +367,15 @@ TRACE_EVENT(mm_vmscan_lru_shrink_inactive,
),

TP_fast_assign(
- __entry->nid = zone_to_nid(zone);
- __entry->zid = zone_idx(zone);
+ __entry->nid = nid;
__entry->nr_scanned = nr_scanned;
__entry->nr_reclaimed = nr_reclaimed;
__entry->priority = priority;
__entry->reclaim_flags = trace_shrink_flags(file);
),

- TP_printk("nid=%d zid=%d nr_scanned=%ld nr_reclaimed=%ld priority=%d flags=%s",
- __entry->nid, __entry->zid,
+ TP_printk("nid=%d nr_scanned=%ld nr_reclaimed=%ld priority=%d flags=%s",
+ __entry->nid,
__entry->nr_scanned, __entry->nr_reclaimed,
__entry->priority,
show_reclaim_flags(__entry->reclaim_flags))
diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 3a970604308f..24a06bc23f85 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -1525,11 +1525,11 @@ static unsigned long minimum_image_size(unsigned long saveable)
unsigned long size;

size = global_page_state(NR_SLAB_RECLAIMABLE)
- + global_page_state(NR_ACTIVE_ANON)
- + global_page_state(NR_INACTIVE_ANON)
- + global_page_state(NR_ACTIVE_FILE)
- + global_page_state(NR_INACTIVE_FILE)
- - global_page_state(NR_FILE_MAPPED);
+ + global_node_page_state(NR_ACTIVE_ANON)
+ + global_node_page_state(NR_INACTIVE_ANON)
+ + global_node_page_state(NR_ACTIVE_FILE)
+ + global_node_page_state(NR_INACTIVE_FILE)
+ - global_node_page_state(NR_FILE_MAPPED);

return saveable <= size ? 0 : saveable - size;
}
diff --git a/mm/backing-dev.c b/mm/backing-dev.c
index 5683592f79d5..b59d4ebdf54a 100644
--- a/mm/backing-dev.c
+++ b/mm/backing-dev.c
@@ -982,24 +982,24 @@ long congestion_wait(int sync, long timeout)
EXPORT_SYMBOL(congestion_wait);

/**
- * wait_iff_congested - Conditionally wait for a backing_dev to become uncongested or a zone to complete writes
- * @zone: A zone to check if it is heavily congested
+ * wait_iff_congested - Conditionally wait for a backing_dev to become uncongested or a pgdat to complete writes
+ * @pgdat: A pgdat to check if it is heavily congested
* @sync: SYNC or ASYNC IO
* @timeout: timeout in jiffies
*
* In the event of a congested backing_dev (any backing_dev) and the given
- * @zone has experienced recent congestion, this waits for up to @timeout
+ * @pgdat has experienced recent congestion, this waits for up to @timeout
* jiffies for either a BDI to exit congestion of the given @sync queue
* or a write to complete.
*
- * In the absence of zone congestion, cond_resched() is called to yield
+ * In the absence of pgdat congestion, cond_resched() is called to yield
* the processor if necessary but otherwise does not sleep.
*
* The return value is 0 if the sleep is for the full timeout. Otherwise,
* it is the number of jiffies that were still remaining when the function
* returned. return_value == timeout implies the function did not sleep.
*/
-long wait_iff_congested(struct zone *zone, int sync, long timeout)
+long wait_iff_congested(struct pglist_data *pgdat, int sync, long timeout)
{
long ret;
unsigned long start = jiffies;
@@ -1008,12 +1008,13 @@ long wait_iff_congested(struct zone *zone, int sync, long timeout)

/*
* If there is no congestion, or heavy congestion is not being
- * encountered in the current zone, yield if necessary instead
+ * encountered in the current pgdat, yield if necessary instead
* of sleeping on the congestion queue
*/
if (atomic_read(&nr_wb_congested[sync]) == 0 ||
- !test_bit(ZONE_CONGESTED, &zone->flags)) {
+ !test_bit(PGDAT_CONGESTED, &pgdat->flags)) {
cond_resched();
+
/* In case we scheduled, work out time remaining */
ret = timeout - (jiffies - start);
if (ret < 0)
diff --git a/mm/compaction.c b/mm/compaction.c
index c85bd016754f..2ae7c7ea664e 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -591,8 +591,8 @@ static void acct_isolated(struct zone *zone, struct compact_control *cc)
list_for_each_entry(page, &cc->migratepages, lru)
count[!!page_is_file_cache(page)]++;

- mod_zone_page_state(zone, NR_ISOLATED_ANON, count[0]);
- mod_zone_page_state(zone, NR_ISOLATED_FILE, count[1]);
+ mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_ANON, count[0]);
+ mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, count[1]);
}

/* Similar to reclaim, but different enough that they don't share logic */
@@ -600,12 +600,12 @@ static bool too_many_isolated(struct zone *zone)
{
unsigned long active, inactive, isolated;

- inactive = zone_page_state(zone, NR_INACTIVE_FILE) +
- zone_page_state(zone, NR_INACTIVE_ANON);
- active = zone_page_state(zone, NR_ACTIVE_FILE) +
- zone_page_state(zone, NR_ACTIVE_ANON);
- isolated = zone_page_state(zone, NR_ISOLATED_FILE) +
- zone_page_state(zone, NR_ISOLATED_ANON);
+ inactive = node_page_state(zone->zone_pgdat, NR_INACTIVE_FILE) +
+ node_page_state(zone->zone_pgdat, NR_INACTIVE_ANON);
+ active = node_page_state(zone->zone_pgdat, NR_ACTIVE_FILE) +
+ node_page_state(zone->zone_pgdat, NR_ACTIVE_ANON);
+ isolated = node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE) +
+ node_page_state(zone->zone_pgdat, NR_ISOLATED_ANON);

return isolated > (inactive + active) / 2;
}
@@ -767,7 +767,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
}
}

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);

/* Try isolate the page */
if (__isolate_lru_page(page, isolate_mode) != 0)
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 59ca13bb13f9..709797510e10 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -1995,7 +1995,7 @@ void __khugepaged_exit(struct mm_struct *mm)
static void release_pte_page(struct page *page)
{
/* 0 stands for page_is_file_cache(page) == false */
- dec_zone_page_state(page, NR_ISOLATED_ANON + 0);
+ dec_node_page_state(page, NR_ISOLATED_ANON + 0);
unlock_page(page);
putback_lru_page(page);
}
@@ -2090,7 +2090,7 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma,
goto out;
}
/* 0 stands for page_is_file_cache(page) == false */
- inc_zone_page_state(page, NR_ISOLATED_ANON + 0);
+ inc_node_page_state(page, NR_ISOLATED_ANON + 0);
VM_BUG_ON_PAGE(!PageLocked(page), page);
VM_BUG_ON_PAGE(PageLRU(page), page);

@@ -3357,7 +3357,7 @@ static void __split_huge_page(struct page *page, struct list_head *list)

/* prevent PageLRU to go away from under us, and freeze lru stats */
spin_lock_irq(zone_lru_lock(zone));
- lruvec = mem_cgroup_page_lruvec(head, zone);
+ lruvec = mem_cgroup_page_lruvec(head, zone->zone_pgdat);

/* complete memcg works before add pages to LRU */
mem_cgroup_split_huge_fixup(head);
diff --git a/mm/internal.h b/mm/internal.h
index f9153e580d81..08c996d7b8fc 100644
--- a/mm/internal.h
+++ b/mm/internal.h
@@ -84,7 +84,7 @@ extern unsigned long highest_memmap_pfn;
*/
extern int isolate_lru_page(struct page *page);
extern void putback_lru_page(struct page *page);
-extern bool zone_reclaimable(struct zone *zone);
+extern bool pgdat_reclaimable(struct pglist_data *pgdat);

/*
* in mm/rmap.c:
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index c1acf0edd3b4..e9e35424c57e 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -958,7 +958,7 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
struct lruvec *lruvec;

if (mem_cgroup_disabled()) {
- lruvec = &zone->lruvec;
+ lruvec = zone_lruvec(zone);
goto out;
}

@@ -970,8 +970,8 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
* we have to be prepared to initialize lruvec->zone here;
* and if offlined then reonlined, we need to reinitialize it.
*/
- if (unlikely(lruvec->zone != zone))
- lruvec->zone = zone;
+ if (unlikely(lruvec->pgdat != zone->zone_pgdat))
+ lruvec->pgdat = zone->zone_pgdat;
return lruvec;
}

@@ -984,14 +984,14 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone,
* and putback protocol: the LRU lock must be held, and the page must
* either be PageLRU() or the caller must have isolated/allocated it.
*/
-struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct zone *zone)
+struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct pglist_data *pgdat)
{
struct mem_cgroup_per_zone *mz;
struct mem_cgroup *memcg;
struct lruvec *lruvec;

if (mem_cgroup_disabled()) {
- lruvec = &zone->lruvec;
+ lruvec = &pgdat->lruvec;
goto out;
}

@@ -1011,8 +1011,8 @@ struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct zone *zone)
* we have to be prepared to initialize lruvec->zone here;
* and if offlined then reonlined, we need to reinitialize it.
*/
- if (unlikely(lruvec->zone != zone))
- lruvec->zone = zone;
+ if (unlikely(lruvec->pgdat != pgdat))
+ lruvec->pgdat = pgdat;
return lruvec;
}

@@ -2092,7 +2092,7 @@ static void lock_page_lru(struct page *page, int *isolated)
if (PageLRU(page)) {
struct lruvec *lruvec;

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
ClearPageLRU(page);
del_page_from_lru_list(page, lruvec, page_lru(page));
*isolated = 1;
@@ -2107,7 +2107,7 @@ static void unlock_page_lru(struct page *page, int isolated)
if (isolated) {
struct lruvec *lruvec;

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
VM_BUG_ON_PAGE(PageLRU(page), page);
SetPageLRU(page);
add_page_to_lru_list(page, lruvec, page_lru(page));
diff --git a/mm/memory-failure.c b/mm/memory-failure.c
index 67c30eb993f0..204709f9ae0f 100644
--- a/mm/memory-failure.c
+++ b/mm/memory-failure.c
@@ -1657,7 +1657,7 @@ static int __soft_offline_page(struct page *page, int flags)
put_hwpoison_page(page);
if (!ret) {
LIST_HEAD(pagelist);
- inc_zone_page_state(page, NR_ISOLATED_ANON +
+ inc_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
list_add(&page->lru, &pagelist);
ret = migrate_pages(&pagelist, new_page, NULL, MPOL_MF_MOVE_ALL,
@@ -1665,7 +1665,7 @@ static int __soft_offline_page(struct page *page, int flags)
if (ret) {
if (!list_empty(&pagelist)) {
list_del(&page->lru);
- dec_zone_page_state(page, NR_ISOLATED_ANON +
+ dec_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
putback_lru_page(page);
}
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 92402f8d17e8..b33fe895a35c 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1524,7 +1524,7 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn)
put_page(page);
list_add_tail(&page->lru, &source);
move_pages--;
- inc_zone_page_state(page, NR_ISOLATED_ANON +
+ inc_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));

} else {
diff --git a/mm/mempolicy.c b/mm/mempolicy.c
index 8c5fd08c253c..4871e4d66c44 100644
--- a/mm/mempolicy.c
+++ b/mm/mempolicy.c
@@ -963,7 +963,7 @@ static void migrate_page_add(struct page *page, struct list_head *pagelist,
if ((flags & MPOL_MF_MOVE_ALL) || page_mapcount(page) == 1) {
if (!isolate_lru_page(page)) {
list_add_tail(&page->lru, pagelist);
- inc_zone_page_state(page, NR_ISOLATED_ANON +
+ inc_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
}
}
diff --git a/mm/migrate.c b/mm/migrate.c
index 90cbf7c65cac..aea3e350f4fc 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -92,7 +92,7 @@ void putback_movable_pages(struct list_head *l)
continue;
}
list_del(&page->lru);
- dec_zone_page_state(page, NR_ISOLATED_ANON +
+ dec_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
if (unlikely(isolated_balloon_page(page)))
balloon_page_putback(page);
@@ -969,7 +969,7 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page,
* restored.
*/
list_del(&page->lru);
- dec_zone_page_state(page, NR_ISOLATED_ANON +
+ dec_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
/* Soft-offlined page shouldn't go through lru cache list */
if (reason == MR_MEMORY_FAILURE) {
@@ -1291,7 +1291,7 @@ static int do_move_page_to_node_array(struct mm_struct *mm,
err = isolate_lru_page(page);
if (!err) {
list_add_tail(&page->lru, &pagelist);
- inc_zone_page_state(page, NR_ISOLATED_ANON +
+ inc_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
}
put_and_set:
@@ -1557,15 +1557,16 @@ static bool migrate_balanced_pgdat(struct pglist_data *pgdat,
unsigned long nr_migrate_pages)
{
int z;
+
+ if (!pgdat_reclaimable(pgdat))
+ return false;
+
for (z = pgdat->nr_zones - 1; z >= 0; z--) {
struct zone *zone = pgdat->node_zones + z;

if (!populated_zone(zone))
continue;

- if (!zone_reclaimable(zone))
- continue;
-
/* Avoid waking kswapd by allocating pages_to_migrate pages. */
if (!zone_watermark_ok(zone, 0,
high_wmark_pages(zone) +
@@ -1659,7 +1660,7 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page)
}

page_lru = page_is_file_cache(page);
- mod_zone_page_state(page_zone(page), NR_ISOLATED_ANON + page_lru,
+ mod_node_page_state(page_zone(page)->zone_pgdat, NR_ISOLATED_ANON + page_lru,
hpage_nr_pages(page));

/*
@@ -1717,7 +1718,7 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma,
if (nr_remaining) {
if (!list_empty(&migratepages)) {
list_del(&page->lru);
- dec_zone_page_state(page, NR_ISOLATED_ANON +
+ dec_node_page_state(page, NR_ISOLATED_ANON +
page_is_file_cache(page));
putback_lru_page(page);
}
@@ -1807,7 +1808,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
/* Retake the callers reference and putback on LRU */
get_page(page);
putback_lru_page(page);
- mod_zone_page_state(page_zone(page),
+ mod_node_page_state(page_zone(page)->zone_pgdat,
NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR);

goto out_unlock;
@@ -1860,7 +1861,7 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm,
count_vm_events(PGMIGRATE_SUCCESS, HPAGE_PMD_NR);
count_vm_numa_events(NUMA_PAGE_MIGRATE, HPAGE_PMD_NR);

- mod_zone_page_state(page_zone(page),
+ mod_node_page_state(page_zone(page)->zone_pgdat,
NR_ISOLATED_ANON + page_lru,
-HPAGE_PMD_NR);
return isolated;
diff --git a/mm/mlock.c b/mm/mlock.c
index ce7dabd53e7e..40156665ccf0 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c
@@ -103,7 +103,7 @@ static bool __munlock_isolate_lru_page(struct page *page, bool getpage)
if (PageLRU(page)) {
struct lruvec *lruvec;

- lruvec = mem_cgroup_page_lruvec(page, page_zone(page));
+ lruvec = mem_cgroup_page_lruvec(page, page_zone(page)->zone_pgdat);
if (getpage)
get_page(page);
ClearPageLRU(page);
diff --git a/mm/page-writeback.c b/mm/page-writeback.c
index 11ff8f758631..b0960ec94bc9 100644
--- a/mm/page-writeback.c
+++ b/mm/page-writeback.c
@@ -285,8 +285,8 @@ static unsigned long zone_dirtyable_memory(struct zone *zone)
*/
nr_pages -= min(nr_pages, zone->totalreserve_pages);

- nr_pages += zone_page_state(zone, NR_INACTIVE_FILE);
- nr_pages += zone_page_state(zone, NR_ACTIVE_FILE);
+ nr_pages += node_page_state(zone->zone_pgdat, NR_INACTIVE_FILE);
+ nr_pages += node_page_state(zone->zone_pgdat, NR_ACTIVE_FILE);

return nr_pages;
}
@@ -344,8 +344,8 @@ static unsigned long global_dirtyable_memory(void)
*/
x -= min(x, totalreserve_pages);

- x += global_page_state(NR_INACTIVE_FILE);
- x += global_page_state(NR_ACTIVE_FILE);
+ x += global_node_page_state(NR_INACTIVE_FILE);
+ x += global_node_page_state(NR_ACTIVE_FILE);

if (!vm_highmem_is_dirtyable)
x -= highmem_dirtyable_memory(x);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 288015b5ee24..b03c7b5872bf 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -801,9 +801,9 @@ static void free_pcppages_bulk(struct zone *zone, int count,
unsigned long nr_scanned;

spin_lock(&zone->lock);
- nr_scanned = zone_page_state(zone, NR_PAGES_SCANNED);
+ nr_scanned = node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED);
if (nr_scanned)
- __mod_zone_page_state(zone, NR_PAGES_SCANNED, -nr_scanned);
+ __mod_node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED, -nr_scanned);

while (to_free) {
struct page *page;
@@ -855,9 +855,9 @@ static void free_one_page(struct zone *zone,
{
unsigned long nr_scanned;
spin_lock(&zone->lock);
- nr_scanned = zone_page_state(zone, NR_PAGES_SCANNED);
+ nr_scanned = node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED);
if (nr_scanned)
- __mod_zone_page_state(zone, NR_PAGES_SCANNED, -nr_scanned);
+ __mod_node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED, -nr_scanned);

if (unlikely(has_isolate_pageblock(zone) ||
is_migrate_isolate(migratetype))) {
@@ -3131,7 +3131,7 @@ should_reclaim_retry(gfp_t gfp_mask, unsigned order,
unsigned long available;
unsigned long reclaimable;

- available = reclaimable = zone_reclaimable_pages(zone);
+ available = reclaimable = pgdat_reclaimable_pages(zone->zone_pgdat);
available -= DIV_ROUND_UP(no_progress_loops * available,
MAX_RECLAIM_RETRIES);
available += zone_page_state_snapshot(zone, NR_FREE_PAGES);
@@ -3914,6 +3914,7 @@ void show_free_areas(unsigned int filter)
unsigned long free_pcp = 0;
int cpu;
struct zone *zone;
+ pg_data_t *pgdat;

for_each_populated_zone(zone) {
if (skip_free_areas_node(filter, zone_to_nid(zone)))
@@ -3929,13 +3930,13 @@ void show_free_areas(unsigned int filter)
" slab_reclaimable:%lu slab_unreclaimable:%lu\n"
" mapped:%lu shmem:%lu pagetables:%lu bounce:%lu\n"
" free:%lu free_pcp:%lu free_cma:%lu\n",
- global_page_state(NR_ACTIVE_ANON),
- global_page_state(NR_INACTIVE_ANON),
- global_page_state(NR_ISOLATED_ANON),
- global_page_state(NR_ACTIVE_FILE),
- global_page_state(NR_INACTIVE_FILE),
- global_page_state(NR_ISOLATED_FILE),
- global_page_state(NR_UNEVICTABLE),
+ global_node_page_state(NR_ACTIVE_ANON),
+ global_node_page_state(NR_INACTIVE_ANON),
+ global_node_page_state(NR_ISOLATED_ANON),
+ global_node_page_state(NR_ACTIVE_FILE),
+ global_node_page_state(NR_INACTIVE_FILE),
+ global_node_page_state(NR_ISOLATED_FILE),
+ global_node_page_state(NR_UNEVICTABLE),
global_page_state(NR_FILE_DIRTY),
global_page_state(NR_WRITEBACK),
global_page_state(NR_UNSTABLE_NFS),
@@ -3949,6 +3950,28 @@ void show_free_areas(unsigned int filter)
free_pcp,
global_page_state(NR_FREE_CMA_PAGES));

+ for_each_online_pgdat(pgdat) {
+ printk("Node %d"
+ " active_anon:%lukB"
+ " inactive_anon:%lukB"
+ " active_file:%lukB"
+ " inactive_file:%lukB"
+ " unevictable:%lukB"
+ " isolated(anon):%lukB"
+ " isolated(file):%lukB"
+ " all_unreclaimable? %s"
+ "\n",
+ pgdat->node_id,
+ K(node_page_state(pgdat, NR_ACTIVE_ANON)),
+ K(node_page_state(pgdat, NR_INACTIVE_ANON)),
+ K(node_page_state(pgdat, NR_ACTIVE_FILE)),
+ K(node_page_state(pgdat, NR_INACTIVE_FILE)),
+ K(node_page_state(pgdat, NR_UNEVICTABLE)),
+ K(node_page_state(pgdat, NR_ISOLATED_ANON)),
+ K(node_page_state(pgdat, NR_ISOLATED_FILE)),
+ !pgdat_reclaimable(pgdat) ? "yes" : "no");
+ }
+
for_each_populated_zone(zone) {
int i;

@@ -3965,13 +3988,6 @@ void show_free_areas(unsigned int filter)
" min:%lukB"
" low:%lukB"
" high:%lukB"
- " active_anon:%lukB"
- " inactive_anon:%lukB"
- " active_file:%lukB"
- " inactive_file:%lukB"
- " unevictable:%lukB"
- " isolated(anon):%lukB"
- " isolated(file):%lukB"
" present:%lukB"
" managed:%lukB"
" mlocked:%lukB"
@@ -3989,21 +4005,13 @@ void show_free_areas(unsigned int filter)
" local_pcp:%ukB"
" free_cma:%lukB"
" writeback_tmp:%lukB"
- " pages_scanned:%lu"
- " all_unreclaimable? %s"
+ " node_pages_scanned:%lu"
"\n",
zone->name,
K(zone_page_state(zone, NR_FREE_PAGES)),
K(min_wmark_pages(zone)),
K(low_wmark_pages(zone)),
K(high_wmark_pages(zone)),
- K(zone_page_state(zone, NR_ACTIVE_ANON)),
- K(zone_page_state(zone, NR_INACTIVE_ANON)),
- K(zone_page_state(zone, NR_ACTIVE_FILE)),
- K(zone_page_state(zone, NR_INACTIVE_FILE)),
- K(zone_page_state(zone, NR_UNEVICTABLE)),
- K(zone_page_state(zone, NR_ISOLATED_ANON)),
- K(zone_page_state(zone, NR_ISOLATED_FILE)),
K(zone->present_pages),
K(zone->managed_pages),
K(zone_page_state(zone, NR_MLOCK)),
@@ -4022,9 +4030,7 @@ void show_free_areas(unsigned int filter)
K(this_cpu_read(zone->pageset->pcp.count)),
K(zone_page_state(zone, NR_FREE_CMA_PAGES)),
K(zone_page_state(zone, NR_WRITEBACK_TEMP)),
- K(zone_page_state(zone, NR_PAGES_SCANNED)),
- (!zone_reclaimable(zone) ? "yes" : "no")
- );
+ K(node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED)));
printk("lowmem_reserve[]:");
for (i = 0; i < MAX_NR_ZONES; i++)
printk(" %ld", zone->lowmem_reserve[i]);
@@ -5579,7 +5585,7 @@ static void __paginginit free_area_init_core(struct pglist_data *pgdat)
/* For bootup, initialized properly in watermark setup */
mod_zone_page_state(zone, NR_ALLOC_BATCH, zone->managed_pages);

- lruvec_init(&zone->lruvec);
+ lruvec_init(zone_lruvec(zone));
if (!size)
continue;

@@ -6465,26 +6471,37 @@ void setup_per_zone_wmarks(void)
* 1TB 101 10GB
* 10TB 320 32GB
*/
-static void __meminit calculate_zone_inactive_ratio(struct zone *zone)
+static void __meminit calculate_node_inactive_ratio(struct pglist_data *pgdat)
{
unsigned int gb, ratio;
+ int z;
+ unsigned long managed_pages = 0;
+
+ for (z = 0; z < MAX_NR_ZONES; z++) {
+ struct zone *zone = &pgdat->node_zones[z];

- /* Zone size in gigabytes */
- gb = zone->managed_pages >> (30 - PAGE_SHIFT);
+ if (!populated_zone(zone))
+ continue;
+
+ managed_pages += zone->managed_pages;
+ }
+
+ /* Node size in gigabytes */
+ gb = managed_pages >> (30 - PAGE_SHIFT);
if (gb)
ratio = int_sqrt(10 * gb);
else
ratio = 1;

- zone->inactive_ratio = ratio;
+ pgdat->inactive_ratio = ratio;
}

-static void __meminit setup_per_zone_inactive_ratio(void)
+static void __meminit setup_per_node_inactive_ratio(void)
{
- struct zone *zone;
+ struct pglist_data *pgdat;

- for_each_zone(zone)
- calculate_zone_inactive_ratio(zone);
+ for_each_online_pgdat(pgdat)
+ calculate_node_inactive_ratio(pgdat);
}

/*
@@ -6532,7 +6549,7 @@ int __meminit init_per_zone_wmark_min(void)
setup_per_zone_wmarks();
refresh_zone_stat_thresholds();
setup_per_zone_lowmem_reserve();
- setup_per_zone_inactive_ratio();
+ setup_per_node_inactive_ratio();
return 0;
}
module_init(init_per_zone_wmark_min)
diff --git a/mm/swap.c b/mm/swap.c
index 4067911033e1..83d3fbd03316 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -60,7 +60,7 @@ static void __page_cache_release(struct page *page)
unsigned long flags;

spin_lock_irqsave(zone_lru_lock(zone), flags);
- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
del_page_from_lru_list(page, lruvec, page_off_lru(page));
@@ -191,7 +191,7 @@ static void pagevec_lru_move_fn(struct pagevec *pvec,
spin_lock_irqsave(zone_lru_lock(zone), flags);
}

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
(*move_fn)(page, lruvec, arg);
}
if (zone)
@@ -313,11 +313,11 @@ static bool need_activate_page_drain(int cpu)

void activate_page(struct page *page)
{
- struct zone *zone = page_zone(page);
+ struct pglist_data *pgdat = page_zone(page)->zone_pgdat;

- spin_lock_irq(zone_lru_lock(zone));
- __activate_page(page, mem_cgroup_page_lruvec(page, zone), NULL);
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
+ __activate_page(page, mem_cgroup_page_lruvec(page, pgdat), NULL);
+ spin_unlock_irq(&pgdat->lru_lock);
}
#endif

@@ -443,16 +443,16 @@ void lru_cache_add(struct page *page)
*/
void add_page_to_unevictable_list(struct page *page)
{
- struct zone *zone = page_zone(page);
+ struct pglist_data *pgdat = page_zone(page)->zone_pgdat;
struct lruvec *lruvec;

- spin_lock_irq(zone_lru_lock(zone));
- lruvec = mem_cgroup_page_lruvec(page, zone);
+ spin_lock_irq(&pgdat->lru_lock);
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);
ClearPageActive(page);
SetPageUnevictable(page);
SetPageLRU(page);
add_page_to_lru_list(page, lruvec, LRU_UNEVICTABLE);
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);
}

/**
@@ -710,7 +710,7 @@ void release_pages(struct page **pages, int nr, bool cold)
{
int i;
LIST_HEAD(pages_to_free);
- struct zone *zone = NULL;
+ struct pglist_data *pgdat = NULL;
struct lruvec *lruvec;
unsigned long uninitialized_var(flags);
unsigned int uninitialized_var(lock_batch);
@@ -721,11 +721,11 @@ void release_pages(struct page **pages, int nr, bool cold)
/*
* Make sure the IRQ-safe lock-holding time does not get
* excessive with a continuous string of pages from the
- * same zone. The lock is held only if zone != NULL.
+ * same pgdat. The lock is held only if pgdat != NULL.
*/
- if (zone && ++lock_batch == SWAP_CLUSTER_MAX) {
- spin_unlock_irqrestore(zone_lru_lock(zone), flags);
- zone = NULL;
+ if (pgdat && ++lock_batch == SWAP_CLUSTER_MAX) {
+ spin_unlock_irqrestore(&pgdat->lru_lock, flags);
+ pgdat = NULL;
}

page = compound_head(page);
@@ -733,27 +733,27 @@ void release_pages(struct page **pages, int nr, bool cold)
continue;

if (PageCompound(page)) {
- if (zone) {
- spin_unlock_irqrestore(zone_lru_lock(zone), flags);
- zone = NULL;
+ if (pgdat) {
+ spin_unlock_irqrestore(&pgdat->lru_lock, flags);
+ pgdat = NULL;
}
__put_compound_page(page);
continue;
}

if (PageLRU(page)) {
- struct zone *pagezone = page_zone(page);
+ struct pglist_data *page_pgdat = page_zone(page)->zone_pgdat;

- if (pagezone != zone) {
- if (zone)
- spin_unlock_irqrestore(zone_lru_lock(zone),
+ if (page_pgdat != pgdat) {
+ if (pgdat)
+ spin_unlock_irqrestore(&pgdat->lru_lock,
flags);
lock_batch = 0;
- zone = pagezone;
- spin_lock_irqsave(zone_lru_lock(zone), flags);
+ pgdat = page_pgdat;
+ spin_lock_irqsave(&pgdat->lru_lock, flags);
}

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
del_page_from_lru_list(page, lruvec, page_off_lru(page));
@@ -764,8 +764,8 @@ void release_pages(struct page **pages, int nr, bool cold)

list_add(&page->lru, &pages_to_free);
}
- if (zone)
- spin_unlock_irqrestore(zone_lru_lock(zone), flags);
+ if (pgdat)
+ spin_unlock_irqrestore(&pgdat->lru_lock, flags);

mem_cgroup_uncharge_list(&pages_to_free);
free_hot_cold_page_list(&pages_to_free, cold);
@@ -801,7 +801,7 @@ void lru_add_page_tail(struct page *page, struct page *page_tail,
VM_BUG_ON_PAGE(PageCompound(page_tail), page);
VM_BUG_ON_PAGE(PageLRU(page_tail), page);
VM_BUG_ON(NR_CPUS != 1 &&
- !spin_is_locked(zone_lru_lock(lruvec_zone(lruvec))));
+ !spin_is_locked(&lruvec_pgdat(lruvec)->lru_lock));

if (!list)
SetPageLRU(page_tail);
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 13a8ca37ab42..760fdea19729 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -191,26 +191,26 @@ static bool sane_reclaim(struct scan_control *sc)
}
#endif

-unsigned long zone_reclaimable_pages(struct zone *zone)
+unsigned long pgdat_reclaimable_pages(struct pglist_data *pgdat)
{
unsigned long nr;

- nr = zone_page_state_snapshot(zone, NR_ACTIVE_FILE) +
- zone_page_state_snapshot(zone, NR_INACTIVE_FILE) +
- zone_page_state_snapshot(zone, NR_ISOLATED_FILE);
+ nr = node_page_state_snapshot(pgdat, NR_ACTIVE_FILE) +
+ node_page_state_snapshot(pgdat, NR_INACTIVE_FILE) +
+ node_page_state_snapshot(pgdat, NR_ISOLATED_FILE);

if (get_nr_swap_pages() > 0)
- nr += zone_page_state_snapshot(zone, NR_ACTIVE_ANON) +
- zone_page_state_snapshot(zone, NR_INACTIVE_ANON) +
- zone_page_state_snapshot(zone, NR_ISOLATED_ANON);
+ nr += node_page_state_snapshot(pgdat, NR_ACTIVE_ANON) +
+ node_page_state_snapshot(pgdat, NR_INACTIVE_ANON) +
+ node_page_state_snapshot(pgdat, NR_ISOLATED_ANON);

return nr;
}

-bool zone_reclaimable(struct zone *zone)
+bool pgdat_reclaimable(struct pglist_data *pgdat)
{
- return zone_page_state_snapshot(zone, NR_PAGES_SCANNED) <
- zone_reclaimable_pages(zone) * 6;
+ return node_page_state_snapshot(pgdat, NR_PAGES_SCANNED) <
+ pgdat_reclaimable_pages(pgdat) * 6;
}

unsigned long lruvec_lru_size(struct lruvec *lruvec, enum lru_list lru)
@@ -218,7 +218,7 @@ unsigned long lruvec_lru_size(struct lruvec *lruvec, enum lru_list lru)
if (!mem_cgroup_disabled())
return mem_cgroup_get_lru_size(lruvec, lru);

- return zone_page_state(lruvec_zone(lruvec), NR_LRU_BASE + lru);
+ return node_page_state(lruvec_pgdat(lruvec), NR_LRU_BASE + lru);
}

/*
@@ -877,7 +877,7 @@ static void page_check_dirty_writeback(struct page *page,
* shrink_page_list() returns the number of reclaimed pages
*/
static unsigned long shrink_page_list(struct list_head *page_list,
- struct zone *zone,
+ struct pglist_data *pgdat,
struct scan_control *sc,
enum ttu_flags ttu_flags,
unsigned long *ret_nr_dirty,
@@ -917,7 +917,6 @@ static unsigned long shrink_page_list(struct list_head *page_list,
goto keep;

VM_BUG_ON_PAGE(PageActive(page), page);
- VM_BUG_ON_PAGE(page_zone(page) != zone, page);

sc->nr_scanned++;

@@ -996,7 +995,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
/* Case 1 above */
if (current_is_kswapd() &&
PageReclaim(page) &&
- test_bit(ZONE_WRITEBACK, &zone->flags)) {
+ test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
nr_immediate++;
goto keep_locked;

@@ -1086,7 +1085,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
*/
if (page_is_file_cache(page) &&
(!current_is_kswapd() ||
- !test_bit(ZONE_DIRTY, &zone->flags))) {
+ !test_bit(PGDAT_DIRTY, &pgdat->flags))) {
/*
* Immediately reclaim when written back.
* Similar in principal to deactivate_page()
@@ -1260,11 +1259,11 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone,
}
}

- ret = shrink_page_list(&clean_pages, zone, &sc,
+ ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc,
TTU_UNMAP|TTU_IGNORE_ACCESS,
&dummy1, &dummy2, &dummy3, &dummy4, &dummy5, true);
list_splice(&clean_pages, page_list);
- mod_zone_page_state(zone, NR_ISOLATED_FILE, -ret);
+ mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret);
return ret;
}

@@ -1442,7 +1441,7 @@ int isolate_lru_page(struct page *page)
struct lruvec *lruvec;

spin_lock_irq(zone_lru_lock(zone));
- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
if (PageLRU(page)) {
int lru = page_lru(page);
get_page(page);
@@ -1462,7 +1461,7 @@ int isolate_lru_page(struct page *page)
* the LRU list will go small and be scanned faster than necessary, leading to
* unnecessary swapping, thrashing and OOM.
*/
-static int too_many_isolated(struct zone *zone, int file,
+static int too_many_isolated(struct pglist_data *pgdat, int file,
struct scan_control *sc)
{
unsigned long inactive, isolated;
@@ -1474,11 +1473,11 @@ static int too_many_isolated(struct zone *zone, int file,
return 0;

if (file) {
- inactive = zone_page_state(zone, NR_INACTIVE_FILE);
- isolated = zone_page_state(zone, NR_ISOLATED_FILE);
+ inactive = node_page_state(pgdat, NR_INACTIVE_FILE);
+ isolated = node_page_state(pgdat, NR_ISOLATED_FILE);
} else {
- inactive = zone_page_state(zone, NR_INACTIVE_ANON);
- isolated = zone_page_state(zone, NR_ISOLATED_ANON);
+ inactive = node_page_state(pgdat, NR_INACTIVE_ANON);
+ isolated = node_page_state(pgdat, NR_ISOLATED_ANON);
}

/*
@@ -1496,7 +1495,7 @@ static noinline_for_stack void
putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list)
{
struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
- struct zone *zone = lruvec_zone(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
LIST_HEAD(pages_to_free);

/*
@@ -1509,13 +1508,13 @@ putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list)
VM_BUG_ON_PAGE(PageLRU(page), page);
list_del(&page->lru);
if (unlikely(!page_evictable(page))) {
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);
putback_lru_page(page);
- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
continue;
}

- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);

SetPageLRU(page);
lru = page_lru(page);
@@ -1532,10 +1531,10 @@ putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list)
del_page_from_lru_list(page, lruvec, lru);

if (unlikely(PageCompound(page))) {
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);
mem_cgroup_uncharge(page);
(*get_compound_page_dtor(page))(page);
- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
} else
list_add(&page->lru, &pages_to_free);
}
@@ -1579,10 +1578,10 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
unsigned long nr_immediate = 0;
isolate_mode_t isolate_mode = 0;
int file = is_file_lru(lru);
- struct zone *zone = lruvec_zone(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;

- while (unlikely(too_many_isolated(zone, file, sc))) {
+ while (unlikely(too_many_isolated(pgdat, file, sc))) {
congestion_wait(BLK_RW_ASYNC, HZ/10);

/* We are about to die and free our memory. Return now. */
@@ -1597,49 +1596,47 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
if (!sc->may_writepage)
isolate_mode |= ISOLATE_CLEAN;

- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);

nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &page_list,
&nr_scanned, sc, isolate_mode, lru);

- __mod_zone_page_state(zone, NR_LRU_BASE + lru, -nr_taken);
- __mod_zone_page_state(zone, NR_ISOLATED_ANON + file, nr_taken);
+ __mod_node_page_state(pgdat, NR_LRU_BASE + lru, -nr_taken);
+ __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);

if (global_reclaim(sc)) {
- __mod_zone_page_state(zone, NR_PAGES_SCANNED, nr_scanned);
+ __mod_node_page_state(pgdat, NR_PAGES_SCANNED, nr_scanned);
if (current_is_kswapd())
- __count_zone_vm_events(PGSCAN_KSWAPD, zone, nr_scanned);
+ __count_vm_events(PGSCAN_KSWAPD, nr_scanned);
else
- __count_zone_vm_events(PGSCAN_DIRECT, zone, nr_scanned);
+ __count_vm_events(PGSCAN_DIRECT, nr_scanned);
}
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);

if (nr_taken == 0)
return 0;

- nr_reclaimed = shrink_page_list(&page_list, zone, sc, TTU_UNMAP,
+ nr_reclaimed = shrink_page_list(&page_list, pgdat, sc, TTU_UNMAP,
&nr_dirty, &nr_unqueued_dirty, &nr_congested,
&nr_writeback, &nr_immediate,
false);

- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);

reclaim_stat->recent_scanned[file] += nr_taken;

if (global_reclaim(sc)) {
if (current_is_kswapd())
- __count_zone_vm_events(PGSTEAL_KSWAPD, zone,
- nr_reclaimed);
+ __count_vm_events(PGSTEAL_KSWAPD, nr_reclaimed);
else
- __count_zone_vm_events(PGSTEAL_DIRECT, zone,
- nr_reclaimed);
+ __count_vm_events(PGSTEAL_DIRECT, nr_reclaimed);
}

putback_inactive_pages(lruvec, &page_list);

- __mod_zone_page_state(zone, NR_ISOLATED_ANON + file, -nr_taken);
+ __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken);

- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);

mem_cgroup_uncharge_list(&page_list);
free_hot_cold_page_list(&page_list, true);
@@ -1659,7 +1656,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
* are encountered in the nr_immediate check below.
*/
if (nr_writeback && nr_writeback == nr_taken)
- set_bit(ZONE_WRITEBACK, &zone->flags);
+ set_bit(PGDAT_WRITEBACK, &pgdat->flags);

/*
* Legacy memcg will stall in page writeback so avoid forcibly
@@ -1671,16 +1668,16 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
* backed by a congested BDI and wait_iff_congested will stall.
*/
if (nr_dirty && nr_dirty == nr_congested)
- set_bit(ZONE_CONGESTED, &zone->flags);
+ set_bit(PGDAT_CONGESTED, &pgdat->flags);

/*
* If dirty pages are scanned that are not queued for IO, it
* implies that flushers are not keeping up. In this case, flag
- * the zone ZONE_DIRTY and kswapd will start writing pages from
+ * the pgdat PGDAT_DIRTY and kswapd will start writing pages from
* reclaim context.
*/
if (nr_unqueued_dirty == nr_taken)
- set_bit(ZONE_DIRTY, &zone->flags);
+ set_bit(PGDAT_DIRTY, &pgdat->flags);

/*
* If kswapd scans pages marked marked for immediate
@@ -1699,9 +1696,10 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
*/
if (!sc->hibernation_mode && !current_is_kswapd() &&
current_may_throttle())
- wait_iff_congested(zone, BLK_RW_ASYNC, HZ/10);
+ wait_iff_congested(pgdat, BLK_RW_ASYNC, HZ/10);

- trace_mm_vmscan_lru_shrink_inactive(zone, nr_scanned, nr_reclaimed,
+ trace_mm_vmscan_lru_shrink_inactive(pgdat->node_id,
+ nr_scanned, nr_reclaimed,
sc->priority, file);
return nr_reclaimed;
}
@@ -1729,14 +1727,14 @@ static void move_active_pages_to_lru(struct lruvec *lruvec,
struct list_head *pages_to_free,
enum lru_list lru)
{
- struct zone *zone = lruvec_zone(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
unsigned long pgmoved = 0;
struct page *page;
int nr_pages;

while (!list_empty(list)) {
page = lru_to_page(list);
- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);

VM_BUG_ON_PAGE(PageLRU(page), page);
SetPageLRU(page);
@@ -1752,15 +1750,15 @@ static void move_active_pages_to_lru(struct lruvec *lruvec,
del_page_from_lru_list(page, lruvec, lru);

if (unlikely(PageCompound(page))) {
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);
mem_cgroup_uncharge(page);
(*get_compound_page_dtor(page))(page);
- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
} else
list_add(&page->lru, pages_to_free);
}
}
- __mod_zone_page_state(zone, NR_LRU_BASE + lru, pgmoved);
+ __mod_node_page_state(pgdat, NR_LRU_BASE + lru, pgmoved);
if (!is_active_lru(lru))
__count_vm_events(PGDEACTIVATE, pgmoved);
}
@@ -1781,7 +1779,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
unsigned long nr_rotated = 0;
isolate_mode_t isolate_mode = 0;
int file = is_file_lru(lru);
- struct zone *zone = lruvec_zone(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);

lru_add_drain();

@@ -1790,19 +1788,19 @@ static void shrink_active_list(unsigned long nr_to_scan,
if (!sc->may_writepage)
isolate_mode |= ISOLATE_CLEAN;

- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);

nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &l_hold,
&nr_scanned, sc, isolate_mode, lru);
if (global_reclaim(sc))
- __mod_zone_page_state(zone, NR_PAGES_SCANNED, nr_scanned);
+ __mod_node_page_state(pgdat, NR_PAGES_SCANNED, nr_scanned);

reclaim_stat->recent_scanned[file] += nr_taken;

- __count_zone_vm_events(PGREFILL, zone, nr_scanned);
- __mod_zone_page_state(zone, NR_LRU_BASE + lru, -nr_taken);
- __mod_zone_page_state(zone, NR_ISOLATED_ANON + file, nr_taken);
- spin_unlock_irq(zone_lru_lock(zone));
+ __count_vm_events(PGREFILL, nr_scanned);
+ __mod_node_page_state(pgdat, NR_LRU_BASE + lru, -nr_taken);
+ __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken);
+ spin_unlock_irq(&pgdat->lru_lock);

while (!list_empty(&l_hold)) {
cond_resched();
@@ -1847,7 +1845,7 @@ static void shrink_active_list(unsigned long nr_to_scan,
/*
* Move pages back to the lru list.
*/
- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
/*
* Count referenced pages from currently used mappings as rotated,
* even though only some of them are actually re-activated. This
@@ -1858,22 +1856,22 @@ static void shrink_active_list(unsigned long nr_to_scan,

move_active_pages_to_lru(lruvec, &l_active, &l_hold, lru);
move_active_pages_to_lru(lruvec, &l_inactive, &l_hold, lru - LRU_ACTIVE);
- __mod_zone_page_state(zone, NR_ISOLATED_ANON + file, -nr_taken);
- spin_unlock_irq(zone_lru_lock(zone));
+ __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken);
+ spin_unlock_irq(&pgdat->lru_lock);

mem_cgroup_uncharge_list(&l_hold);
free_hot_cold_page_list(&l_hold, true);
}

#ifdef CONFIG_SWAP
-static bool inactive_anon_is_low_global(struct zone *zone)
+static bool inactive_anon_is_low_global(struct pglist_data *pgdat)
{
unsigned long active, inactive;

- active = zone_page_state(zone, NR_ACTIVE_ANON);
- inactive = zone_page_state(zone, NR_INACTIVE_ANON);
+ active = node_page_state(pgdat, NR_ACTIVE_ANON);
+ inactive = node_page_state(pgdat, NR_INACTIVE_ANON);

- return inactive * zone->inactive_ratio < active;
+ return inactive * pgdat->inactive_ratio < active;
}

/**
@@ -1895,7 +1893,7 @@ static bool inactive_anon_is_low(struct lruvec *lruvec)
if (!mem_cgroup_disabled())
return mem_cgroup_inactive_anon_is_low(lruvec);

- return inactive_anon_is_low_global(lruvec_zone(lruvec));
+ return inactive_anon_is_low_global(lruvec_pgdat(lruvec));
}
#else
static inline bool inactive_anon_is_low(struct lruvec *lruvec)
@@ -1973,7 +1971,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat;
u64 fraction[2];
u64 denominator = 0; /* gcc */
- struct zone *zone = lruvec_zone(lruvec);
+ struct pglist_data *pgdat = lruvec_pgdat(lruvec);
unsigned long anon_prio, file_prio;
enum scan_balance scan_balance;
unsigned long anon, file;
@@ -1994,7 +1992,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
* well.
*/
if (current_is_kswapd()) {
- if (!zone_reclaimable(zone))
+ if (!pgdat_reclaimable(pgdat))
force_scan = true;
if (!mem_cgroup_online(memcg))
force_scan = true;
@@ -2040,14 +2038,24 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
* anon pages. Try to detect this based on file LRU size.
*/
if (global_reclaim(sc)) {
- unsigned long zonefile;
- unsigned long zonefree;
+ unsigned long pgdatfile;
+ unsigned long pgdatfree;
+ int z;
+ unsigned long total_high_wmark = 0;
+
+ pgdatfree = sum_zone_node_page_state(pgdat->node_id, NR_FREE_PAGES);
+ pgdatfile = node_page_state(pgdat, NR_ACTIVE_FILE) +
+ node_page_state(pgdat, NR_INACTIVE_FILE);

- zonefree = zone_page_state(zone, NR_FREE_PAGES);
- zonefile = zone_page_state(zone, NR_ACTIVE_FILE) +
- zone_page_state(zone, NR_INACTIVE_FILE);
+ for (z = 0; z < MAX_NR_ZONES; z++) {
+ struct zone *zone = &pgdat->node_zones[z];
+ if (!populated_zone(zone))
+ continue;
+
+ total_high_wmark += high_wmark_pages(zone);
+ }

- if (unlikely(zonefile + zonefree <= high_wmark_pages(zone))) {
+ if (unlikely(pgdatfile + pgdatfree <= total_high_wmark)) {
scan_balance = SCAN_ANON;
goto out;
}
@@ -2094,7 +2102,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,
file = lruvec_lru_size(lruvec, LRU_ACTIVE_FILE) +
lruvec_lru_size(lruvec, LRU_INACTIVE_FILE);

- spin_lock_irq(zone_lru_lock(zone));
+ spin_lock_irq(&pgdat->lru_lock);
if (unlikely(reclaim_stat->recent_scanned[0] > anon / 4)) {
reclaim_stat->recent_scanned[0] /= 2;
reclaim_stat->recent_rotated[0] /= 2;
@@ -2115,7 +2123,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg,

fp = file_prio * (reclaim_stat->recent_scanned[1] + 1);
fp /= reclaim_stat->recent_rotated[1] + 1;
- spin_unlock_irq(zone_lru_lock(zone));
+ spin_unlock_irq(&pgdat->lru_lock);

fraction[0] = ap;
fraction[1] = fp;
@@ -2369,9 +2377,9 @@ static inline bool should_continue_reclaim(struct zone *zone,
* inactive lists are large enough, continue reclaiming
*/
pages_for_compaction = (2UL << sc->order);
- inactive_lru_pages = zone_page_state(zone, NR_INACTIVE_FILE);
+ inactive_lru_pages = node_page_state(zone->zone_pgdat, NR_INACTIVE_FILE);
if (get_nr_swap_pages() > 0)
- inactive_lru_pages += zone_page_state(zone, NR_INACTIVE_ANON);
+ inactive_lru_pages += node_page_state(zone->zone_pgdat, NR_INACTIVE_ANON);
if (sc->nr_reclaimed < pages_for_compaction &&
inactive_lru_pages > pages_for_compaction)
return true;
@@ -2571,7 +2579,7 @@ static void shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
continue;

if (sc->priority != DEF_PRIORITY &&
- !zone_reclaimable(zone))
+ !pgdat_reclaimable(zone->zone_pgdat))
continue; /* Let kswapd poll it */

/*
@@ -2709,7 +2717,7 @@ static bool pfmemalloc_watermark_ok(pg_data_t *pgdat)
for (i = 0; i <= ZONE_NORMAL; i++) {
zone = &pgdat->node_zones[i];
if (!populated_zone(zone) ||
- zone_reclaimable_pages(zone) == 0)
+ pgdat_reclaimable_pages(pgdat) == 0)
continue;

pfmemalloc_reserve += min_wmark_pages(zone);
@@ -3017,7 +3025,7 @@ static bool pgdat_balanced(pg_data_t *pgdat, int order, int classzone_idx)
* DEF_PRIORITY. Effectively, it considers them balanced so
* they must be considered balanced here as well!
*/
- if (!zone_reclaimable(zone)) {
+ if (!pgdat_reclaimable(zone->zone_pgdat)) {
balanced_pages += zone->managed_pages;
continue;
}
@@ -3081,6 +3089,7 @@ static bool kswapd_shrink_zone(struct zone *zone,
int testorder = sc->order;
unsigned long balance_gap;
bool lowmem_pressure;
+ struct pglist_data *pgdat = zone->zone_pgdat;

/* Reclaim above the high watermark. */
sc->nr_to_reclaim = max(SWAP_CLUSTER_MAX, high_wmark_pages(zone));
@@ -3105,7 +3114,8 @@ static bool kswapd_shrink_zone(struct zone *zone,

shrink_zone(zone, sc, zone_idx(zone) == classzone_idx);

- clear_bit(ZONE_WRITEBACK, &zone->flags);
+ /* TODO: ANOMALY */
+ clear_bit(PGDAT_WRITEBACK, &pgdat->flags);

/*
* If a zone reaches its high watermark, consider it to be no longer
@@ -3113,10 +3123,10 @@ static bool kswapd_shrink_zone(struct zone *zone,
* BDIs but as pressure is relieved, speculatively avoid congestion
* waits.
*/
- if (zone_reclaimable(zone) &&
+ if (pgdat_reclaimable(zone->zone_pgdat) &&
zone_balanced(zone, testorder, false, 0, classzone_idx)) {
- clear_bit(ZONE_CONGESTED, &zone->flags);
- clear_bit(ZONE_DIRTY, &zone->flags);
+ clear_bit(PGDAT_CONGESTED, &pgdat->flags);
+ clear_bit(PGDAT_DIRTY, &pgdat->flags);
}

return sc->nr_scanned >= sc->nr_to_reclaim;
@@ -3175,7 +3185,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx)
continue;

if (sc.priority != DEF_PRIORITY &&
- !zone_reclaimable(zone))
+ !pgdat_reclaimable(zone->zone_pgdat))
continue;

/*
@@ -3202,9 +3212,11 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx)
/*
* If balanced, clear the dirty and congested
* flags
+ *
+ * TODO: ANOMALY
*/
- clear_bit(ZONE_CONGESTED, &zone->flags);
- clear_bit(ZONE_DIRTY, &zone->flags);
+ clear_bit(PGDAT_CONGESTED, &zone->zone_pgdat->flags);
+ clear_bit(PGDAT_DIRTY, &zone->zone_pgdat->flags);
}
}

@@ -3234,7 +3246,7 @@ static int balance_pgdat(pg_data_t *pgdat, int order, int classzone_idx)
continue;

if (sc.priority != DEF_PRIORITY &&
- !zone_reclaimable(zone))
+ !pgdat_reclaimable(zone->zone_pgdat))
continue;

sc.nr_scanned = 0;
@@ -3630,8 +3642,8 @@ 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_lru = zone_page_state(zone, NR_INACTIVE_FILE) +
- zone_page_state(zone, NR_ACTIVE_FILE);
+ unsigned long file_lru = node_page_state(zone->zone_pgdat, NR_INACTIVE_FILE) +
+ node_page_state(zone->zone_pgdat, NR_ACTIVE_FILE);

/*
* It's possible for there to be more file mapped pages than
@@ -3734,7 +3746,7 @@ int zone_reclaim(struct zone *zone, gfp_t gfp_mask, unsigned int order)
zone_page_state(zone, NR_SLAB_RECLAIMABLE) <= zone->min_slab_pages)
return ZONE_RECLAIM_FULL;

- if (!zone_reclaimable(zone))
+ if (!pgdat_reclaimable(zone->zone_pgdat))
return ZONE_RECLAIM_FULL;

/*
@@ -3813,7 +3825,7 @@ void check_move_unevictable_pages(struct page **pages, int nr_pages)
zone = pagezone;
spin_lock_irq(zone_lru_lock(zone));
}
- lruvec = mem_cgroup_page_lruvec(page, zone);
+ lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);

if (!PageLRU(page) || !PageUnevictable(page))
continue;
diff --git a/mm/vmstat.c b/mm/vmstat.c
index ea4e6f9f1094..19bd521e161b 100644
--- a/mm/vmstat.c
+++ b/mm/vmstat.c
@@ -943,11 +943,6 @@ const char * const vmstat_text[] = {
/* enum zone_stat_item countes */
"nr_free_pages",
"nr_alloc_batch",
- "nr_inactive_anon",
- "nr_active_anon",
- "nr_inactive_file",
- "nr_active_file",
- "nr_unevictable",
"nr_mlock",
"nr_anon_pages",
"nr_mapped",
@@ -963,12 +958,9 @@ const char * const vmstat_text[] = {
"nr_vmscan_write",
"nr_vmscan_immediate_reclaim",
"nr_writeback_temp",
- "nr_isolated_anon",
- "nr_isolated_file",
"nr_shmem",
"nr_dirtied",
"nr_written",
- "nr_pages_scanned",

#ifdef CONFIG_NUMA
"numa_hit",
@@ -984,6 +976,16 @@ const char * const vmstat_text[] = {
"nr_anon_transparent_hugepages",
"nr_free_cma",

+ /* Node-based counters */
+ "nr_inactive_anon",
+ "nr_active_anon",
+ "nr_inactive_file",
+ "nr_active_file",
+ "nr_unevictable",
+ "nr_isolated_anon",
+ "nr_isolated_file",
+ "nr_pages_scanned",
+
/* enum writeback_stat_item counters */
"nr_dirty_threshold",
"nr_dirty_background_threshold",
@@ -1005,11 +1007,11 @@ const char * const vmstat_text[] = {
"pgmajfault",
"pglazyfreed",

- TEXTS_FOR_ZONES("pgrefill")
- TEXTS_FOR_ZONES("pgsteal_kswapd")
- TEXTS_FOR_ZONES("pgsteal_direct")
- TEXTS_FOR_ZONES("pgscan_kswapd")
- TEXTS_FOR_ZONES("pgscan_direct")
+ "pgrefill",
+ "pgsteal_kswapd",
+ "pgsteal_direct",
+ "pgscan_kswapd",
+ "pgscan_direct",
"pgscan_direct_throttle",

#ifdef CONFIG_NUMA
@@ -1426,7 +1428,7 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
"\n min %lu"
"\n low %lu"
"\n high %lu"
- "\n scanned %lu"
+ "\n node_scanned %lu"
"\n spanned %lu"
"\n present %lu"
"\n managed %lu",
@@ -1434,13 +1436,13 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
min_wmark_pages(zone),
low_wmark_pages(zone),
high_wmark_pages(zone),
- zone_page_state(zone, NR_PAGES_SCANNED),
+ node_page_state(zone->zone_pgdat, NR_PAGES_SCANNED),
zone->spanned_pages,
zone->present_pages,
zone->managed_pages);

for (i = 0; i < NR_VM_ZONE_STAT_ITEMS; i++)
- seq_printf(m, "\n %-12s %lu", vmstat_text[i],
+ seq_printf(m, "\n %-12s %lu", vmstat_text[i],
zone_page_state(zone, i));

seq_printf(m,
@@ -1470,12 +1472,12 @@ static void zoneinfo_show_print(struct seq_file *m, pg_data_t *pgdat,
#endif
}
seq_printf(m,
- "\n all_unreclaimable: %u"
- "\n start_pfn: %lu"
- "\n inactive_ratio: %u",
- !zone_reclaimable(zone),
+ "\n node_unreclaimable: %u"
+ "\n start_pfn: %lu"
+ "\n node_inactive_ratio: %u",
+ !pgdat_reclaimable(zone->zone_pgdat),
zone->zone_start_pfn,
- zone->inactive_ratio);
+ zone->zone_pgdat->inactive_ratio);
seq_putc(m, '\n');
}

@@ -1566,7 +1568,6 @@ static int vmstat_show(struct seq_file *m, void *arg)
{
unsigned long *l = arg;
unsigned long off = l - (unsigned long *)m->private;
-
seq_printf(m, "%s %lu\n", vmstat_text[off], *l);
return 0;
}
--
2.6.4