[PATCH 01/14] mm/lru: move pgdat lru_lock into lruvec
From: Alex Shi <hidden>
Date: 2019-08-20 09:49:58
Also in:
linux-mm, lkml
Subsystem:
control group - memory resource controller (memcg), memory management, memory management - core, memory management - mglru (multi-gen lru), memory management - misc, memory management - page allocator, memory management - reclaim, memory management - swap, memory management - thp (transparent huge page), memory mapping, the rest · Maintainers:
Johannes Weiner, Michal Hocko, Roman Gushchin, Shakeel Butt, Andrew Morton, David Hildenbrand, Vlastimil Babka, Chris Li, Kairui Song, Lorenzo Stoakes, Liam R. Howlett, Linus Torvalds
This patch move lru_lock into lruvec, give a lru_lock for each of
lruvec, thus bring a lru_lock for each of memcg.
Per memcg lru_lock would ease the lru_lock contention a lot in
this patch series.
In some data center, containers are used widely to deploy different kind
of services, then multiple memcgs share per node pgdat->lru_lock which
cause heavy lock contentions when doing lru operations.
On my 2 socket * 6 cores E5-2630 platform, 24 containers run aim9
simultaneously with mmtests' config:
# AIM9
export AIM9_TESTTIME=180
export AIM9_TESTLIST=page_test,brk_test
perf lock report show much contentions on lru_lock in 20 second snapshot:
Name acquired contended avg wait (ns) total wait (ns) max wait (ns) min wait (ns)
&(ptlock_ptr(pag... 22 0 0 0 0 0
...
&(&pgdat->lru_lo... 9 7 12728 89096 26656 1597
With this patch series, lruvec->lru_lock show no contentions
&(&lruvec->lru_l... 8 0 0 0 0 0
and aim9 page_test/brk_test performance increased 5%~50%.
Now this patch still using per pgdat lru_lock, no function changes yet.
Signed-off-by: Alex Shi <redacted>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Vladimir Davydov <redacted>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Vlastimil Babka <redacted>
Cc: Dan Williams <redacted>
Cc: Oscar Salvador <osalvador@suse.de>
Cc: Mel Gorman <redacted>
Cc: Wei Yang <redacted>
Cc: Pavel Tatashin <redacted>
Cc: Arun KS <redacted>
Cc: Qian Cai <redacted>
Cc: Andrey Ryabinin <redacted>
Cc: "Kirill A. Shutemov" <redacted>
Cc: Hugh Dickins <hughd@google.com>
Cc: "Jérôme Glisse" <redacted>
Cc: Andrea Arcangeli <redacted>
Cc: "Aneesh Kumar K.V" <redacted>
Cc: David Rientjes <rientjes@google.com>
Cc: Souptick Joarder <redacted>
Cc: swkhack <redacted>
Cc: "Potyra, Stefan" <redacted>
Cc: Mike Rapoport <redacted>
Cc: Alexander Duyck <redacted>
Cc: Stephen Rothwell <redacted>
Cc: Colin Ian King <redacted>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Ira Weiny <redacted>
Cc: Kirill Tkhai <redacted>
Cc: Daniel Jordan <daniel.m.jordan@oracle.com>
Cc: Yafang Shao <redacted>
Cc: Yang Shi <redacted>
Cc: Tejun Heo <tj@kernel.org>
Cc: cgroups@vger.kernel.org
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
include/linux/mmzone.h | 4 +++-
mm/compaction.c | 10 +++++-----
mm/huge_memory.c | 6 +++---
mm/memcontrol.c | 6 +++---
mm/mlock.c | 10 +++++-----
mm/mmzone.c | 1 +
mm/page_alloc.c | 1 -
mm/page_idle.c | 4 ++--
mm/swap.c | 28 ++++++++++++++--------------
mm/vmscan.c | 38 +++++++++++++++++++-------------------
10 files changed, 55 insertions(+), 53 deletions(-)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index d77d717c620c..8d0076d084be 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h@@ -295,6 +295,9 @@ struct zone_reclaim_stat { struct lruvec { struct list_head lists[NR_LRU_LISTS]; + /* move lru_lock to per lruvec for memcg */ + spinlock_t lru_lock; + struct zone_reclaim_stat reclaim_stat; /* Evictions & activations on the inactive file list */ atomic_long_t inactive_age;
@@ -744,7 +747,6 @@ struct zonelist { /* Write-intensive fields used by page reclaim */ ZONE_PADDING(_pad1_) - spinlock_t lru_lock; #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT /*
diff --git a/mm/compaction.c b/mm/compaction.c
index 952dc2fb24e5..9a737f343183 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c@@ -846,7 +846,7 @@ static bool too_many_isolated(pg_data_t *pgdat) * a fatal signal is pending. */ if (!(low_pfn % SWAP_CLUSTER_MAX) - && compact_unlock_should_abort(&pgdat->lru_lock, + && compact_unlock_should_abort(&pgdat->lruvec.lru_lock, flags, &locked, cc)) { low_pfn = 0; goto fatal_pending;
@@ -919,7 +919,7 @@ static bool too_many_isolated(pg_data_t *pgdat) if (unlikely(__PageMovable(page)) && !PageIsolated(page)) { if (locked) { - spin_unlock_irqrestore(&pgdat->lru_lock, + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); locked = false; }
@@ -949,7 +949,7 @@ static bool too_many_isolated(pg_data_t *pgdat) /* If we already hold the lock, we can skip some rechecking */ if (!locked) { - locked = compact_lock_irqsave(&pgdat->lru_lock, + locked = compact_lock_irqsave(&pgdat->lruvec.lru_lock, &flags, cc); /* Try get exclusive access under lock */
@@ -1016,7 +1016,7 @@ static bool too_many_isolated(pg_data_t *pgdat) */ if (nr_isolated) { if (locked) { - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); locked = false; } putback_movable_pages(&cc->migratepages);
@@ -1043,7 +1043,7 @@ static bool too_many_isolated(pg_data_t *pgdat) isolate_abort: if (locked) - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); /* * Updated the cached scanner pfn once the pageblock has been scanned
diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 738065f765ab..3a483deee807 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c@@ -2529,7 +2529,7 @@ static void __split_huge_page(struct page *page, struct list_head *list, xa_unlock(&head->mapping->i_pages); } - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); remap_page(head);
@@ -2740,7 +2740,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) lru_add_drain(); /* prevent PageLRU to go away from under us, and freeze lru stats */ - spin_lock_irqsave(&pgdata->lru_lock, flags); + spin_lock_irqsave(&pgdata->lruvec.lru_lock, flags); if (mapping) { XA_STATE(xas, &mapping->i_pages, page_index(head));
@@ -2785,7 +2785,7 @@ int split_huge_page_to_list(struct page *page, struct list_head *list) spin_unlock(&pgdata->split_queue_lock); fail: if (mapping) xa_unlock(&mapping->i_pages); - spin_unlock_irqrestore(&pgdata->lru_lock, flags); + spin_unlock_irqrestore(&pgdata->lruvec.lru_lock, flags); remap_page(head); ret = -EBUSY; }
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 6f5c0c517c49..2792b8ed405f 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c@@ -2557,7 +2557,7 @@ static void lock_page_lru(struct page *page, int *isolated) { pg_data_t *pgdat = page_pgdat(page); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); if (PageLRU(page)) { struct lruvec *lruvec;
@@ -2581,7 +2581,7 @@ static void unlock_page_lru(struct page *page, int isolated) SetPageLRU(page); add_page_to_lru_list(page, lruvec, page_lru(page)); } - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); } static void commit_charge(struct page *page, struct mem_cgroup *memcg,
@@ -2901,7 +2901,7 @@ void __memcg_kmem_uncharge(struct page *page, int order) /* * Because tail pages are not marked as "used", set it. We're under - * pgdat->lru_lock and migration entries setup in all page mappings. + * pgdat->lruvec.lru_lock and migration entries setup in all page mappings. */ void mem_cgroup_split_huge_fixup(struct page *head) {
diff --git a/mm/mlock.c b/mm/mlock.c
index a90099da4fb4..1279684bada0 100644
--- a/mm/mlock.c
+++ b/mm/mlock.c@@ -194,7 +194,7 @@ unsigned int munlock_vma_page(struct page *page) * might otherwise copy PageMlocked to part of the tail pages before * we clear it in the head page. It also stabilizes hpage_nr_pages(). */ - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); if (!TestClearPageMlocked(page)) { /* Potentially, PTE-mapped THP: do not skip the rest PTEs */
@@ -206,14 +206,14 @@ unsigned int munlock_vma_page(struct page *page) __mod_zone_page_state(page_zone(page), NR_MLOCK, -nr_pages); if (__munlock_isolate_lru_page(page, true)) { - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); __munlock_isolated_page(page); goto out; } __munlock_isolation_failed(page); unlock_out: - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); out: return nr_pages - 1;
@@ -298,7 +298,7 @@ static void __munlock_pagevec(struct pagevec *pvec, struct zone *zone) pagevec_init(&pvec_putback); /* Phase 1: page isolation */ - spin_lock_irq(&zone->zone_pgdat->lru_lock); + spin_lock_irq(&zone->zone_pgdat->lruvec.lru_lock); for (i = 0; i < nr; i++) { struct page *page = pvec->pages[i];
@@ -325,7 +325,7 @@ static void __munlock_pagevec(struct pagevec *pvec, struct zone *zone) pvec->pages[i] = NULL; } __mod_zone_page_state(zone, NR_MLOCK, delta_munlocked); - spin_unlock_irq(&zone->zone_pgdat->lru_lock); + spin_unlock_irq(&zone->zone_pgdat->lruvec.lru_lock); /* Now we can release pins of pages that we are not munlocking */ pagevec_release(&pvec_putback);
diff --git a/mm/mmzone.c b/mm/mmzone.c
index 4686fdc23bb9..3750a90ed4a0 100644
--- a/mm/mmzone.c
+++ b/mm/mmzone.c@@ -91,6 +91,7 @@ void lruvec_init(struct lruvec *lruvec) enum lru_list lru; memset(lruvec, 0, sizeof(struct lruvec)); + spin_lock_init(&lruvec->lru_lock); for_each_lru(lru) INIT_LIST_HEAD(&lruvec->lists[lru]);
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index 272c6de1bf4e..1b07dcaabbd7 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c@@ -6677,7 +6677,6 @@ static void __meminit pgdat_init_internals(struct pglist_data *pgdat) init_waitqueue_head(&pgdat->pfmemalloc_wait); pgdat_page_ext_init(pgdat); - spin_lock_init(&pgdat->lru_lock); lruvec_init(node_lruvec(pgdat)); }
diff --git a/mm/page_idle.c b/mm/page_idle.c
index 295512465065..420bc0ac8c1e 100644
--- a/mm/page_idle.c
+++ b/mm/page_idle.c@@ -42,12 +42,12 @@ static struct page *page_idle_get_page(unsigned long pfn) return NULL; pgdat = page_pgdat(page); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); if (unlikely(!PageLRU(page))) { put_page(page); page = NULL; } - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); return page; }
diff --git a/mm/swap.c b/mm/swap.c
index ae300397dfda..63f4782af57a 100644
--- a/mm/swap.c
+++ b/mm/swap.c@@ -63,12 +63,12 @@ static void __page_cache_release(struct page *page) struct lruvec *lruvec; unsigned long flags; - spin_lock_irqsave(&pgdat->lru_lock, flags); + spin_lock_irqsave(&pgdat->lruvec.lru_lock, flags); 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)); - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); } __ClearPageWaiters(page); mem_cgroup_uncharge(page);
@@ -201,16 +201,16 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, if (pagepgdat != pgdat) { if (pgdat) - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); pgdat = pagepgdat; - spin_lock_irqsave(&pgdat->lru_lock, flags); + spin_lock_irqsave(&pgdat->lruvec.lru_lock, flags); } lruvec = mem_cgroup_page_lruvec(page, pgdat); (*move_fn)(page, lruvec, arg); } if (pgdat) - spin_unlock_irqrestore(&pgdat->lru_lock, flags); + spin_unlock_irqrestore(&pgdat->lruvec.lru_lock, flags); release_pages(pvec->pages, pvec->nr); pagevec_reinit(pvec); }
@@ -326,9 +326,9 @@ void activate_page(struct page *page) pg_data_t *pgdat = page_pgdat(page); page = compound_head(page); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); __activate_page(page, mem_cgroup_page_lruvec(page, pgdat), NULL); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); } #endif
@@ -733,7 +733,7 @@ void release_pages(struct page **pages, int nr) * same pgdat. The lock is held only if pgdat != NULL. */ if (locked_pgdat && ++lock_batch == SWAP_CLUSTER_MAX) { - spin_unlock_irqrestore(&locked_pgdat->lru_lock, flags); + spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags); locked_pgdat = NULL; }
@@ -742,7 +742,7 @@ void release_pages(struct page **pages, int nr) if (is_zone_device_page(page)) { if (locked_pgdat) { - spin_unlock_irqrestore(&locked_pgdat->lru_lock, + spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags); locked_pgdat = NULL; }
@@ -762,7 +762,7 @@ void release_pages(struct page **pages, int nr) if (PageCompound(page)) { if (locked_pgdat) { - spin_unlock_irqrestore(&locked_pgdat->lru_lock, flags); + spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags); locked_pgdat = NULL; } __put_compound_page(page);
@@ -774,11 +774,11 @@ void release_pages(struct page **pages, int nr) if (pgdat != locked_pgdat) { if (locked_pgdat) - spin_unlock_irqrestore(&locked_pgdat->lru_lock, + spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags); lock_batch = 0; locked_pgdat = pgdat; - spin_lock_irqsave(&locked_pgdat->lru_lock, flags); + spin_lock_irqsave(&locked_pgdat->lruvec.lru_lock, flags); } lruvec = mem_cgroup_page_lruvec(page, locked_pgdat);
@@ -794,7 +794,7 @@ void release_pages(struct page **pages, int nr) list_add(&page->lru, &pages_to_free); } if (locked_pgdat) - spin_unlock_irqrestore(&locked_pgdat->lru_lock, flags); + spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags); mem_cgroup_uncharge_list(&pages_to_free); free_unref_page_list(&pages_to_free);
@@ -832,7 +832,7 @@ void lru_add_page_tail(struct page *page, struct page *page_tail, VM_BUG_ON_PAGE(!PageHead(page), page); VM_BUG_ON_PAGE(PageCompound(page_tail), page); VM_BUG_ON_PAGE(PageLRU(page_tail), page); - lockdep_assert_held(&lruvec_pgdat(lruvec)->lru_lock); + lockdep_assert_held(&lruvec->lru_lock); if (!list) SetPageLRU(page_tail);
diff --git a/mm/vmscan.c b/mm/vmscan.c
index c77d1e3761a7..c7a228525df0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c@@ -1805,7 +1805,7 @@ int isolate_lru_page(struct page *page) pg_data_t *pgdat = page_pgdat(page); struct lruvec *lruvec; - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); lruvec = mem_cgroup_page_lruvec(page, pgdat); if (PageLRU(page)) { int lru = page_lru(page);
@@ -1814,7 +1814,7 @@ int isolate_lru_page(struct page *page) del_page_from_lru_list(page, lruvec, lru); ret = 0; } - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); } return ret; }
@@ -1890,9 +1890,9 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, VM_BUG_ON_PAGE(PageLRU(page), page); if (unlikely(!page_evictable(page))) { list_del(&page->lru); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); putback_lru_page(page); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); continue; } lruvec = mem_cgroup_page_lruvec(page, pgdat);
@@ -1910,10 +1910,10 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, del_page_from_lru_list(page, lruvec, lru); if (unlikely(PageCompound(page))) { - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); mem_cgroup_uncharge(page); (*get_compound_page_dtor(page))(page); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); } else list_add(&page->lru, &pages_to_free); } else {
@@ -1976,7 +1976,7 @@ static int current_may_throttle(void) lru_add_drain(); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &page_list, &nr_scanned, sc, lru);
@@ -1988,7 +1988,7 @@ static int current_may_throttle(void) if (global_reclaim(sc)) __count_vm_events(item, nr_scanned); __count_memcg_events(lruvec_memcg(lruvec), item, nr_scanned); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); if (nr_taken == 0) return 0;
@@ -1996,7 +1996,7 @@ static int current_may_throttle(void) nr_reclaimed = shrink_page_list(&page_list, pgdat, sc, 0, &stat, false); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); item = current_is_kswapd() ? PGSTEAL_KSWAPD : PGSTEAL_DIRECT; if (global_reclaim(sc))
@@ -2009,7 +2009,7 @@ static int current_may_throttle(void) __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); mem_cgroup_uncharge_list(&page_list); free_unref_page_list(&page_list);
@@ -2062,7 +2062,7 @@ static void shrink_active_list(unsigned long nr_to_scan, lru_add_drain(); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &l_hold, &nr_scanned, sc, lru);
@@ -2073,7 +2073,7 @@ static void shrink_active_list(unsigned long nr_to_scan, __count_vm_events(PGREFILL, nr_scanned); __count_memcg_events(lruvec_memcg(lruvec), PGREFILL, nr_scanned); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); while (!list_empty(&l_hold)) { cond_resched();
@@ -2119,7 +2119,7 @@ static void shrink_active_list(unsigned long nr_to_scan, /* * Move pages back to the lru list. */ - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); /* * Count referenced pages from currently used mappings as rotated, * even though only some of them are actually re-activated. This
@@ -2137,7 +2137,7 @@ static void shrink_active_list(unsigned long nr_to_scan, __count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE, nr_deactivate); __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); mem_cgroup_uncharge_list(&l_active); free_unref_page_list(&l_active);
@@ -2373,7 +2373,7 @@ static void get_scan_count(struct lruvec *lruvec, struct mem_cgroup *memcg, file = lruvec_lru_size(lruvec, LRU_ACTIVE_FILE, MAX_NR_ZONES) + lruvec_lru_size(lruvec, LRU_INACTIVE_FILE, MAX_NR_ZONES); - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); if (unlikely(reclaim_stat->recent_scanned[0] > anon / 4)) { reclaim_stat->recent_scanned[0] /= 2; reclaim_stat->recent_rotated[0] /= 2;
@@ -2394,7 +2394,7 @@ 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(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); fraction[0] = ap; fraction[1] = fp;
@@ -4263,9 +4263,9 @@ void check_move_unevictable_pages(struct pagevec *pvec) pgscanned++; if (pagepgdat != pgdat) { if (pgdat) - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); pgdat = pagepgdat; - spin_lock_irq(&pgdat->lru_lock); + spin_lock_irq(&pgdat->lruvec.lru_lock); } lruvec = mem_cgroup_page_lruvec(page, pgdat);
@@ -4286,7 +4286,7 @@ void check_move_unevictable_pages(struct pagevec *pvec) if (pgdat) { __count_vm_events(UNEVICTABLE_PGRESCUED, pgrescued); __count_vm_events(UNEVICTABLE_PGSCANNED, pgscanned); - spin_unlock_irq(&pgdat->lru_lock); + spin_unlock_irq(&pgdat->lruvec.lru_lock); } } EXPORT_SYMBOL_GPL(check_move_unevictable_pages);
--
1.8.3.1