The isolate counting is pecpu counter so it would be not huge gain to work them by batch. Rather than complicating to make them batch, let's make it more stright-foward via adding the counting logic into [isolate|putback]_lru_page API. * v1 * fix accounting bug - Hillf Link: http://lkml.kernel.org/r/20190531165927.GA20067@xxxxxxxxxxx Acked-by: Michal Hocko <mhocko@xxxxxxxx> Suggested-by: Johannes Weiner <hannes@xxxxxxxxxxx> Signed-off-by: Minchan Kim <minchan@xxxxxxxxxx> --- mm/compaction.c | 2 -- mm/gup.c | 7 +------ mm/khugepaged.c | 3 --- mm/memory-failure.c | 3 --- mm/memory_hotplug.c | 4 ---- mm/mempolicy.c | 6 +----- mm/migrate.c | 37 ++++++++----------------------------- mm/vmscan.c | 22 ++++++++++++++++------ 8 files changed, 26 insertions(+), 58 deletions(-) diff --git a/mm/compaction.c b/mm/compaction.c index 9e1b9acb116b..c6591682deda 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -982,8 +982,6 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn, /* Successfully isolated */ del_page_from_lru_list(page, lruvec, page_lru(page)); - inc_node_page_state(page, - NR_ISOLATED_ANON + page_is_file_cache(page)); isolate_success: list_add(&page->lru, &cc->migratepages); diff --git a/mm/gup.c b/mm/gup.c index 98f13ab37bac..11d0634ce613 100644 --- a/mm/gup.c +++ b/mm/gup.c @@ -1475,13 +1475,8 @@ static long check_and_migrate_cma_pages(struct task_struct *tsk, drain_allow = false; } - if (!isolate_lru_page(head)) { + if (!isolate_lru_page(head)) list_add_tail(&head->lru, &cma_page_list); - mod_node_page_state(page_pgdat(head), - NR_ISOLATED_ANON + - page_is_file_cache(head), - hpage_nr_pages(head)); - } } } diff --git a/mm/khugepaged.c b/mm/khugepaged.c index eaaa21b23215..a8b517d6df4a 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -503,7 +503,6 @@ void __khugepaged_exit(struct mm_struct *mm) static void release_pte_page(struct page *page) { - dec_node_page_state(page, NR_ISOLATED_ANON + page_is_file_cache(page)); unlock_page(page); putback_lru_page(page); } @@ -602,8 +601,6 @@ static int __collapse_huge_page_isolate(struct vm_area_struct *vma, result = SCAN_DEL_PAGE_LRU; goto out; } - inc_node_page_state(page, - NR_ISOLATED_ANON + page_is_file_cache(page)); VM_BUG_ON_PAGE(!PageLocked(page), page); VM_BUG_ON_PAGE(PageLRU(page), page); diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 7ef849da8278..9900bb95d774 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1791,9 +1791,6 @@ static int __soft_offline_page(struct page *page, int flags) * so use !__PageMovable instead for LRU page's mapping * cannot have PAGE_MAPPING_MOVABLE. */ - if (!__PageMovable(page)) - 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, MIGRATE_SYNC, MR_MEMORY_FAILURE); diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c index b9ba5b85f9f7..15bad2043b41 100644 --- a/mm/memory_hotplug.c +++ b/mm/memory_hotplug.c @@ -1383,10 +1383,6 @@ do_migrate_range(unsigned long start_pfn, unsigned long end_pfn) ret = isolate_movable_page(page, ISOLATE_UNEVICTABLE); if (!ret) { /* Success */ list_add_tail(&page->lru, &source); - if (!__PageMovable(page)) - inc_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); - } else { pr_warn("failed to isolate pfn %lx\n", pfn); dump_page(page, "isolation failed"); diff --git a/mm/mempolicy.c b/mm/mempolicy.c index 4acc2d14bc77..a5685eee6d1d 100644 --- a/mm/mempolicy.c +++ b/mm/mempolicy.c @@ -994,12 +994,8 @@ static int migrate_page_add(struct page *page, struct list_head *pagelist, * Avoid migrating a page that is shared with others. */ if ((flags & MPOL_MF_MOVE_ALL) || page_mapcount(head) == 1) { - if (!isolate_lru_page(head)) { + if (!isolate_lru_page(head)) list_add_tail(&head->lru, pagelist); - mod_node_page_state(page_pgdat(head), - NR_ISOLATED_ANON + page_is_file_cache(head), - hpage_nr_pages(head)); - } } return 0; diff --git a/mm/migrate.c b/mm/migrate.c index 8992741f10aa..f54f449a99f5 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -190,8 +190,6 @@ void putback_movable_pages(struct list_head *l) unlock_page(page); put_page(page); } else { - mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + - page_is_file_cache(page), -hpage_nr_pages(page)); putback_lru_page(page); } } @@ -1175,10 +1173,17 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page, return -ENOMEM; if (page_count(page) == 1) { + bool is_lru = !__PageMovable(page); + /* page was freed from under us. So we are done. */ ClearPageActive(page); ClearPageUnevictable(page); - if (unlikely(__PageMovable(page))) { + if (likely(is_lru)) + mod_node_page_state(page_pgdat(page), + NR_ISOLATED_ANON + + page_is_file_cache(page), + -hpage_nr_pages(page)); + else { lock_page(page); if (!PageMovable(page)) __ClearPageIsolated(page); @@ -1204,15 +1209,6 @@ static ICE_noinline int unmap_and_move(new_page_t get_new_page, * restored. */ list_del(&page->lru); - - /* - * Compaction can migrate also non-LRU pages which are - * not accounted to NR_ISOLATED_*. They can be recognized - * as __PageMovable - */ - if (likely(!__PageMovable(page))) - mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + - page_is_file_cache(page), -hpage_nr_pages(page)); } /* @@ -1566,9 +1562,6 @@ static int add_page_for_migration(struct mm_struct *mm, unsigned long addr, err = 0; list_add_tail(&head->lru, pagelist); - mod_node_page_state(page_pgdat(head), - NR_ISOLATED_ANON + page_is_file_cache(head), - hpage_nr_pages(head)); } out_putpage: /* @@ -1884,8 +1877,6 @@ static struct page *alloc_misplaced_dst_page(struct page *page, static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page) { - int page_lru; - VM_BUG_ON_PAGE(compound_order(page) && !PageTransHuge(page), page); /* Avoid migrating to a node that is nearly full */ @@ -1907,10 +1898,6 @@ static int numamigrate_isolate_page(pg_data_t *pgdat, struct page *page) return 0; } - page_lru = page_is_file_cache(page); - mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + page_lru, - hpage_nr_pages(page)); - /* * Isolating the page has taken another reference, so the * caller's reference can be safely dropped without the page @@ -1965,8 +1952,6 @@ int migrate_misplaced_page(struct page *page, struct vm_area_struct *vma, if (nr_remaining) { if (!list_empty(&migratepages)) { list_del(&page->lru); - dec_node_page_state(page, NR_ISOLATED_ANON + - page_is_file_cache(page)); putback_lru_page(page); } isolated = 0; @@ -1996,7 +1981,6 @@ int migrate_misplaced_transhuge_page(struct mm_struct *mm, pg_data_t *pgdat = NODE_DATA(node); int isolated = 0; struct page *new_page = NULL; - int page_lru = page_is_file_cache(page); unsigned long start = address & HPAGE_PMD_MASK; new_page = alloc_pages_node(node, @@ -2042,8 +2026,6 @@ 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_node_page_state(page_pgdat(page), - NR_ISOLATED_ANON + page_lru, -HPAGE_PMD_NR); goto out_unlock; } @@ -2093,9 +2075,6 @@ 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_node_page_state(page_pgdat(page), - NR_ISOLATED_ANON + page_lru, - -HPAGE_PMD_NR); return isolated; out_fail: diff --git a/mm/vmscan.c b/mm/vmscan.c index b4fa04d10ba6..ca192b792d4f 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1016,6 +1016,9 @@ int remove_mapping(struct address_space *mapping, struct page *page) void putback_lru_page(struct page *page) { lru_cache_add(page); + mod_node_page_state(page_pgdat(page), + NR_ISOLATED_ANON + page_is_file_cache(page), + -hpage_nr_pages(page)); put_page(page); /* drop ref from isolate */ } @@ -1481,6 +1484,9 @@ static unsigned long shrink_page_list(struct list_head *page_list, */ nr_reclaimed += nr_pages; + mod_node_page_state(pgdat, NR_ISOLATED_ANON + + page_is_file_cache(page), + -nr_pages); /* * Is there need to periodically free_page_list? It would * appear not as the counts should be low @@ -1556,7 +1562,6 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone, ret = shrink_page_list(&clean_pages, zone->zone_pgdat, &sc, TTU_IGNORE_ACCESS, &dummy_stat, true); list_splice(&clean_pages, page_list); - mod_node_page_state(zone->zone_pgdat, NR_ISOLATED_FILE, -ret); return ret; } @@ -1632,6 +1637,9 @@ int __isolate_lru_page(struct page *page, isolate_mode_t mode) */ ClearPageLRU(page); ret = 0; + __mod_node_page_state(page_pgdat(page), NR_ISOLATED_ANON + + page_is_file_cache(page), + hpage_nr_pages(page)); } return ret; @@ -1763,6 +1771,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, trace_mm_vmscan_lru_isolate(sc->reclaim_idx, sc->order, nr_to_scan, total_scan, skipped, nr_taken, mode, lru); update_lru_sizes(lruvec, lru, nr_zone_taken); + return nr_taken; } @@ -1811,6 +1820,9 @@ int isolate_lru_page(struct page *page) ClearPageLRU(page); del_page_from_lru_list(page, lruvec, lru); ret = 0; + mod_node_page_state(pgdat, NR_ISOLATED_ANON + + page_is_file_cache(page), + hpage_nr_pages(page)); } spin_unlock_irq(&pgdat->lru_lock); } @@ -1902,6 +1914,9 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec, update_lru_size(lruvec, lru, page_zonenum(page), nr_pages); list_move(&page->lru, &lruvec->lists[lru]); + __mod_node_page_state(pgdat, NR_ISOLATED_ANON + + page_is_file_cache(page), + -hpage_nr_pages(page)); if (put_page_testzero(page)) { __ClearPageLRU(page); __ClearPageActive(page); @@ -1979,7 +1994,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &page_list, &nr_scanned, sc, lru); - __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken); reclaim_stat->recent_scanned[file] += nr_taken; item = current_is_kswapd() ? PGSCAN_KSWAPD : PGSCAN_DIRECT; @@ -2005,8 +2019,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, move_pages_to_lru(lruvec, &page_list); - __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, -nr_taken); - spin_unlock_irq(&pgdat->lru_lock); mem_cgroup_uncharge_list(&page_list); @@ -2065,7 +2077,6 @@ static void shrink_active_list(unsigned long nr_to_scan, nr_taken = isolate_lru_pages(nr_to_scan, lruvec, &l_hold, &nr_scanned, sc, lru); - __mod_node_page_state(pgdat, NR_ISOLATED_ANON + file, nr_taken); reclaim_stat->recent_scanned[file] += nr_taken; __count_vm_events(PGREFILL, nr_scanned); @@ -2134,7 +2145,6 @@ static void shrink_active_list(unsigned long nr_to_scan, __count_vm_events(PGDEACTIVATE, nr_deactivate); __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); mem_cgroup_uncharge_list(&l_active); -- 2.22.0.410.gd8fdbe21b5-goog
