diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/compaction.c | 5 | ||||
| -rw-r--r-- | mm/huge_memory.c | 8 | ||||
| -rw-r--r-- | mm/memcontrol.c | 101 | ||||
| -rw-r--r-- | mm/swap.c | 86 | ||||
| -rw-r--r-- | mm/vmscan.c | 47 |
5 files changed, 103 insertions, 144 deletions
diff --git a/mm/compaction.c b/mm/compaction.c index 74e1b3803839..4ac338af5120 100644 --- a/mm/compaction.c +++ b/mm/compaction.c @@ -227,6 +227,7 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc, unsigned long nr_scanned = 0, nr_isolated = 0; struct list_head *migratelist = &cc->migratepages; isolate_mode_t mode = 0; + struct lruvec *lruvec; /* * Ensure that there are not too many pages isolated from the LRU @@ -328,6 +329,8 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc, if (cc->mode != COMPACT_SYNC) mode |= ISOLATE_ASYNC_MIGRATE; + lruvec = mem_cgroup_page_lruvec(page, zone); + /* Try isolate the page */ if (__isolate_lru_page(page, mode) != 0) continue; @@ -335,7 +338,7 @@ isolate_migratepages_range(struct zone *zone, struct compact_control *cc, VM_BUG_ON(PageTransCompound(page)); /* Successfully isolated */ - del_page_from_lru_list(zone, page, page_lru(page)); + del_page_from_lru_list(page, lruvec, page_lru(page)); list_add(&page->lru, migratelist); cc->nr_migratepages++; nr_isolated++; diff --git a/mm/huge_memory.c b/mm/huge_memory.c index d0def42c121b..57c4b9309015 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1231,10 +1231,13 @@ static void __split_huge_page_refcount(struct page *page) { int i; struct zone *zone = page_zone(page); + struct lruvec *lruvec; int tail_count = 0; /* prevent PageLRU to go away from under us, and freeze lru stats */ spin_lock_irq(&zone->lru_lock); + lruvec = mem_cgroup_page_lruvec(page, zone); + compound_lock(page); /* complete memcg works before add pages to LRU */ mem_cgroup_split_huge_fixup(page); @@ -1309,13 +1312,12 @@ static void __split_huge_page_refcount(struct page *page) BUG_ON(!PageDirty(page_tail)); BUG_ON(!PageSwapBacked(page_tail)); - - lru_add_page_tail(zone, page, page_tail); + lru_add_page_tail(page, page_tail, lruvec); } atomic_sub(tail_count, &page->_count); BUG_ON(atomic_read(&page->_count) <= 0); - __dec_zone_page_state(page, NR_ANON_TRANSPARENT_HUGEPAGES); + __mod_zone_page_state(zone, NR_ANON_TRANSPARENT_HUGEPAGES, -1); __mod_zone_page_state(zone, NR_ANON_PAGES, HPAGE_PMD_NR); ClearPageCompound(page); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 75198dac3fe8..bb8d7d3cf302 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -1035,7 +1035,7 @@ EXPORT_SYMBOL(mem_cgroup_count_vm_event); /** * mem_cgroup_zone_lruvec - get the lru list vector for a zone and memcg * @zone: zone of the wanted lruvec - * @mem: memcg of the wanted lruvec + * @memcg: memcg of the wanted lruvec * * Returns the lru list vector holding pages for the given @zone and * @mem. This can be the global zone lruvec, if the memory controller @@ -1068,19 +1068,11 @@ struct lruvec *mem_cgroup_zone_lruvec(struct zone *zone, */ /** - * mem_cgroup_lru_add_list - account for adding an lru page and return lruvec - * @zone: zone of the page + * mem_cgroup_page_lruvec - return lruvec for adding an lru page * @page: the page - * @lru: current lru - * - * This function accounts for @page being added to @lru, and returns - * the lruvec for the given @zone and the memcg @page is charged to. - * - * The callsite is then responsible for physically linking the page to - * the returned lruvec->lists[@lru]. + * @zone: zone of the page */ -struct lruvec *mem_cgroup_lru_add_list(struct zone *zone, struct page *page, - enum lru_list lru) +struct lruvec *mem_cgroup_page_lruvec(struct page *page, struct zone *zone) { struct mem_cgroup_per_zone *mz; struct mem_cgroup *memcg; @@ -1093,7 +1085,7 @@ struct lruvec *mem_cgroup_lru_add_list(struct zone *zone, struct page *page, memcg = pc->mem_cgroup; /* - * Surreptitiously switch any uncharged page to root: + * Surreptitiously switch any uncharged offlist page to root: * an uncharged page off lru does nothing to secure * its former mem_cgroup from sudden removal. * @@ -1101,65 +1093,35 @@ struct lruvec *mem_cgroup_lru_add_list(struct zone *zone, struct page *page, * under page_cgroup lock: between them, they make all uses * of pc->mem_cgroup safe. */ - if (!PageCgroupUsed(pc) && memcg != root_mem_cgroup) + if (!PageLRU(page) && !PageCgroupUsed(pc) && memcg != root_mem_cgroup) pc->mem_cgroup = memcg = root_mem_cgroup; mz = page_cgroup_zoneinfo(memcg, page); - /* compound_order() is stabilized through lru_lock */ - mz->lru_size[lru] += 1 << compound_order(page); return &mz->lruvec; } /** - * mem_cgroup_lru_del_list - account for removing an lru page - * @page: the page - * @lru: target lru + * mem_cgroup_update_lru_size - account for adding or removing an lru page + * @lruvec: mem_cgroup per zone lru vector + * @lru: index of lru list the page is sitting on + * @nr_pages: positive when adding or negative when removing * - * This function accounts for @page being removed from @lru. - * - * The callsite is then responsible for physically unlinking - * @page->lru. + * This function must be called when a page is added to or removed from an + * lru list. */ -void mem_cgroup_lru_del_list(struct page *page, enum lru_list lru) +void mem_cgroup_update_lru_size(struct lruvec *lruvec, enum lru_list lru, + int nr_pages) { struct mem_cgroup_per_zone *mz; - struct mem_cgroup *memcg; - struct page_cgroup *pc; + unsigned long *lru_size; if (mem_cgroup_disabled()) return; - pc = lookup_page_cgroup(page); - memcg = pc->mem_cgroup; - VM_BUG_ON(!memcg); - mz = page_cgroup_zoneinfo(memcg, page); - /* huge page split is done under lru_lock. so, we have no races. */ - VM_BUG_ON(mz->lru_size[lru] < (1 << compound_order(page))); - mz->lru_size[lru] -= 1 << compound_order(page); -} - -/** - * mem_cgroup_lru_move_lists - account for moving a page between lrus - * @zone: zone of the page - * @page: the page - * @from: current lru - * @to: target lru - * - * This function accounts for @page being moved between the lrus @from - * and @to, and returns the lruvec for the given @zone and the memcg - * @page is charged to. - * - * The callsite is then responsible for physically relinking - * @page->lru to the returned lruvec->lists[@to]. - */ -struct lruvec *mem_cgroup_lru_move_lists(struct zone *zone, - struct page *page, - enum lru_list from, - enum lru_list to) -{ - /* XXX: Optimize this, especially for @from == @to */ - mem_cgroup_lru_del_list(page, from); - return mem_cgroup_lru_add_list(zone, page, to); + mz = container_of(lruvec, struct mem_cgroup_per_zone, lruvec); + lru_size = mz->lru_size + lru; + *lru_size += nr_pages; + VM_BUG_ON((long)(*lru_size) < 0); } /* @@ -1252,24 +1214,6 @@ int mem_cgroup_inactive_file_is_low(struct lruvec *lruvec) return (active > inactive); } -struct zone_reclaim_stat * -mem_cgroup_get_reclaim_stat_from_page(struct page *page) -{ - struct page_cgroup *pc; - struct mem_cgroup_per_zone *mz; - - if (mem_cgroup_disabled()) - return NULL; - - pc = lookup_page_cgroup(page); - if (!PageCgroupUsed(pc)) - return NULL; - /* Ensure pc->mem_cgroup is visible after reading PCG_USED. */ - smp_rmb(); - mz = page_cgroup_zoneinfo(pc->mem_cgroup, page); - return &mz->lruvec.reclaim_stat; -} - #define mem_cgroup_from_res_counter(counter, member) \ container_of(counter, struct mem_cgroup, member) @@ -2509,6 +2453,7 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, { struct page_cgroup *pc = lookup_page_cgroup(page); struct zone *uninitialized_var(zone); + struct lruvec *lruvec; bool was_on_lru = false; bool anon; @@ -2531,8 +2476,9 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, zone = page_zone(page); spin_lock_irq(&zone->lru_lock); if (PageLRU(page)) { + lruvec = mem_cgroup_zone_lruvec(zone, pc->mem_cgroup); ClearPageLRU(page); - del_page_from_lru_list(zone, page, page_lru(page)); + del_page_from_lru_list(page, lruvec, page_lru(page)); was_on_lru = true; } } @@ -2550,9 +2496,10 @@ static void __mem_cgroup_commit_charge(struct mem_cgroup *memcg, if (lrucare) { if (was_on_lru) { + lruvec = mem_cgroup_zone_lruvec(zone, pc->mem_cgroup); VM_BUG_ON(PageLRU(page)); SetPageLRU(page); - add_page_to_lru_list(zone, page, page_lru(page)); + add_page_to_lru_list(page, lruvec, page_lru(page)); } spin_unlock_irq(&zone->lru_lock); } diff --git a/mm/swap.c b/mm/swap.c index 0503ad705e7c..4e7e2ec67078 100644 --- a/mm/swap.c +++ b/mm/swap.c @@ -47,13 +47,15 @@ static DEFINE_PER_CPU(struct pagevec, lru_deactivate_pvecs); static void __page_cache_release(struct page *page) { if (PageLRU(page)) { - unsigned long flags; struct zone *zone = page_zone(page); + struct lruvec *lruvec; + unsigned long flags; spin_lock_irqsave(&zone->lru_lock, flags); + lruvec = mem_cgroup_page_lruvec(page, zone); VM_BUG_ON(!PageLRU(page)); __ClearPageLRU(page); - del_page_from_lru_list(zone, page, page_off_lru(page)); + del_page_from_lru_list(page, lruvec, page_off_lru(page)); spin_unlock_irqrestore(&zone->lru_lock, flags); } } @@ -235,11 +237,12 @@ void put_pages_list(struct list_head *pages) EXPORT_SYMBOL(put_pages_list); static void pagevec_lru_move_fn(struct pagevec *pvec, - void (*move_fn)(struct page *page, void *arg), - void *arg) + void (*move_fn)(struct page *page, struct lruvec *lruvec, void *arg), + void *arg) { int i; struct zone *zone = NULL; + struct lruvec *lruvec; unsigned long flags = 0; for (i = 0; i < pagevec_count(pvec); i++) { @@ -253,7 +256,8 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, spin_lock_irqsave(&zone->lru_lock, flags); } - (*move_fn)(page, arg); + lruvec = mem_cgroup_page_lruvec(page, zone); + (*move_fn)(page, lruvec, arg); } if (zone) spin_unlock_irqrestore(&zone->lru_lock, flags); @@ -261,16 +265,13 @@ static void pagevec_lru_move_fn(struct pagevec *pvec, pagevec_reinit(pvec); } -static void pagevec_move_tail_fn(struct page *page, void *arg) +static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec, + void *arg) { int *pgmoved = arg; if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) { enum lru_list lru = page_lru_base_type(page); - struct lruvec *lruvec; - - lruvec = mem_cgroup_lru_move_lists(page_zone(page), - page, lru, lru); list_move_tail(&page->lru, &lruvec->lists[lru]); (*pgmoved)++; } @@ -309,35 +310,30 @@ void rotate_reclaimable_page(struct page *page) } } -static void update_page_reclaim_stat(struct zone *zone, struct page *page, +static void update_page_reclaim_stat(struct lruvec *lruvec, int file, int rotated) { - struct zone_reclaim_stat *reclaim_stat; - - reclaim_stat = mem_cgroup_get_reclaim_stat_from_page(page); - if (!reclaim_stat) - reclaim_stat = &zone->lruvec.reclaim_stat; + struct zone_reclaim_stat *reclaim_stat = &lruvec->reclaim_stat; reclaim_stat->recent_scanned[file]++; if (rotated) reclaim_stat->recent_rotated[file]++; } -static void __activate_page(struct page *page, void *arg) +static void __activate_page(struct page *page, struct lruvec *lruvec, + void *arg) { - struct zone *zone = page_zone(page); - if (PageLRU(page) && !PageActive(page) && !PageUnevictable(page)) { int file = page_is_file_cache(page); int lru = page_lru_base_type(page); - del_page_from_lru_list(zone, page, lru); + del_page_from_lru_list(page, lruvec, lru); SetPageActive(page); lru += LRU_ACTIVE; - add_page_to_lru_list(zone, page, lru); - __count_vm_event(PGACTIVATE); + add_page_to_lru_list(page, lruvec, lru); - update_page_reclaim_stat(zone, page, file, 1); + __count_vm_event(PGACTIVATE); + update_page_reclaim_stat(lruvec, file, 1); } } @@ -374,7 +370,7 @@ void activate_page(struct page *page) struct zone *zone = page_zone(page); spin_lock_irq(&zone->lru_lock); - __activate_page(page, NULL); + __activate_page(page, mem_cgroup_page_lruvec(page, zone), NULL); spin_unlock_irq(&zone->lru_lock); } #endif @@ -441,11 +437,13 @@ void lru_cache_add_lru(struct page *page, enum lru_list lru) void add_page_to_unevictable_list(struct page *page) { struct zone *zone = page_zone(page); + struct lruvec *lruvec; spin_lock_irq(&zone->lru_lock); + lruvec = mem_cgroup_page_lruvec(page, zone); SetPageUnevictable(page); SetPageLRU(page); - add_page_to_lru_list(zone, page, LRU_UNEVICTABLE); + add_page_to_lru_list(page, lruvec, LRU_UNEVICTABLE); spin_unlock_irq(&zone->lru_lock); } @@ -470,11 +468,11 @@ void add_page_to_unevictable_list(struct page *page) * be write it out by flusher threads as this is much more effective * than the single-page writeout from reclaim. */ -static void lru_deactivate_fn(struct page *page, void *arg) +static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec, + void *arg) { int lru, file; bool active; - struct zone *zone = page_zone(page); if (!PageLRU(page)) return; @@ -487,13 +485,13 @@ static void lru_deactivate_fn(struct page *page, void *arg) return; active = PageActive(page); - file = page_is_file_cache(page); lru = page_lru_base_type(page); - del_page_from_lru_list(zone, page, lru + active); + + del_page_from_lru_list(page, lruvec, lru + active); ClearPageActive(page); ClearPageReferenced(page); - add_page_to_lru_list(zone, page, lru); + add_page_to_lru_list(page, lruvec, lru); if (PageWriteback(page) || PageDirty(page)) { /* @@ -503,19 +501,17 @@ static void lru_deactivate_fn(struct page *page, void *arg) */ SetPageReclaim(page); } else { - struct lruvec *lruvec; /* * The page's writeback ends up during pagevec * We moves tha page into tail of inactive. */ - lruvec = mem_cgroup_lru_move_lists(zone, page, lru, lru); list_move_tail(&page->lru, &lruvec->lists[lru]); __count_vm_event(PGROTATED); } if (active) __count_vm_event(PGDEACTIVATE); - update_page_reclaim_stat(zone, page, file, 0); + update_page_reclaim_stat(lruvec, file, 0); } /* @@ -615,6 +611,7 @@ void release_pages(struct page **pages, int nr, int cold) int i; LIST_HEAD(pages_to_free); struct zone *zone = NULL; + struct lruvec *lruvec; unsigned long uninitialized_var(flags); for (i = 0; i < nr; i++) { @@ -642,9 +639,11 @@ void release_pages(struct page **pages, int nr, int cold) zone = pagezone; spin_lock_irqsave(&zone->lru_lock, flags); } + + lruvec = mem_cgroup_page_lruvec(page, zone); VM_BUG_ON(!PageLRU(page)); __ClearPageLRU(page); - del_page_from_lru_list(zone, page, page_off_lru(page)); + del_page_from_lru_list(page, lruvec, page_off_lru(page)); } list_add(&page->lru, &pages_to_free); @@ -676,8 +675,8 @@ EXPORT_SYMBOL(__pagevec_release); #ifdef CONFIG_TRANSPARENT_HUGEPAGE /* used by __split_huge_page_refcount() */ -void lru_add_page_tail(struct zone* zone, - struct page *page, struct page *page_tail) +void lru_add_page_tail(struct page *page, struct page *page_tail, + struct lruvec *lruvec) { int uninitialized_var(active); enum lru_list lru; @@ -686,7 +685,8 @@ void lru_add_page_tail(struct zone* zone, VM_BUG_ON(!PageHead(page)); VM_BUG_ON(PageCompound(page_tail)); VM_BUG_ON(PageLRU(page_tail)); - VM_BUG_ON(NR_CPUS != 1 && !spin_is_locked(&zone->lru_lock)); + VM_BUG_ON(NR_CPUS != 1 && + !spin_is_locked(&lruvec_zone(lruvec)->lru_lock)); SetPageLRU(page_tail); @@ -715,20 +715,20 @@ void lru_add_page_tail(struct zone* zone, * Use the standard add function to put page_tail on the list, * but then correct its position so they all end up in order. */ - add_page_to_lru_list(zone, page_tail, lru); + add_page_to_lru_list(page_tail, lruvec, lru); list_head = page_tail->lru.prev; list_move_tail(&page_tail->lru, list_head); } if (!PageUnevictable(page)) - update_page_reclaim_stat(zone, page_tail, file, active); + update_page_reclaim_stat(lruvec, file, active); } #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ -static void __pagevec_lru_add_fn(struct page *page, void *arg) +static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec, + void *arg) { enum lru_list lru = (enum lru_list)arg; - struct zone *zone = page_zone(page); int file = is_file_lru(lru); int active = is_active_lru(lru); @@ -739,8 +739,8 @@ static void __pagevec_lru_add_fn(struct page *page, void *arg) SetPageLRU(page); if (active) SetPageActive(page); - add_page_to_lru_list(zone, page, lru); - update_page_reclaim_stat(zone, page, file, active); + add_page_to_lru_list(page, lruvec, lru); + update_page_reclaim_stat(lruvec, file, active); } /* diff --git a/mm/vmscan.c b/mm/vmscan.c index 05d439dc1af9..eeb3bc9d1d36 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -1031,6 +1031,7 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, for (scan = 0; scan < nr_to_scan && !list_empty(src); scan++) { struct page *page; + int nr_pages; page = lru_to_page(src); prefetchw_prev_lru_page(page, src, flags); @@ -1039,9 +1040,10 @@ static unsigned long isolate_lru_pages(unsigned long nr_to_scan, switch (__isolate_lru_page(page, mode)) { case 0: - mem_cgroup_lru_del_list(page, lru); + nr_pages = hpage_nr_pages(page); + mem_cgroup_update_lru_size(lruvec, lru, -nr_pages); list_move(&page->lru, dst); - nr_taken += hpage_nr_pages(page); + nr_taken += nr_pages; break; case -EBUSY: @@ -1093,15 +1095,16 @@ int isolate_lru_page(struct page *page) if (PageLRU(page)) { struct zone *zone = page_zone(page); + struct lruvec *lruvec; spin_lock_irq(&zone->lru_lock); + lruvec = mem_cgroup_page_lruvec(page, zone); if (PageLRU(page)) { int lru = page_lru(page); - ret = 0; get_page(page); ClearPageLRU(page); - - del_page_from_lru_list(zone, page, lru); + del_page_from_lru_list(page, lruvec, lru); + ret = 0; } spin_unlock_irq(&zone->lru_lock); } @@ -1155,9 +1158,13 @@ putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list) spin_lock_irq(&zone->lru_lock); continue; } + + lruvec = mem_cgroup_page_lruvec(page, zone); + SetPageLRU(page); lru = page_lru(page); - add_page_to_lru_list(zone, page, lru); + add_page_to_lru_list(page, lruvec, lru); + if (is_active_lru(lru)) { int file = is_file_lru(lru); int numpages = hpage_nr_pages(page); @@ -1166,7 +1173,7 @@ putback_inactive_pages(struct lruvec *lruvec, struct list_head *page_list) if (put_page_testzero(page)) { __ClearPageLRU(page); __ClearPageActive(page); - del_page_from_lru_list(zone, page, lru); + del_page_from_lru_list(page, lruvec, lru); if (unlikely(PageCompound(page))) { spin_unlock_irq(&zone->lru_lock); @@ -1314,30 +1321,32 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec, * But we had to alter page->flags anyway. */ -static void move_active_pages_to_lru(struct zone *zone, +static void move_active_pages_to_lru(struct lruvec *lruvec, struct list_head *list, struct list_head *pages_to_free, enum lru_list lru) { + struct zone *zone = lruvec_zone(lruvec); unsigned long pgmoved = 0; struct page *page; + int nr_pages; while (!list_empty(list)) { - struct lruvec *lruvec; - page = lru_to_page(list); + lruvec = mem_cgroup_page_lruvec(page, zone); VM_BUG_ON(PageLRU(page)); SetPageLRU(page); - lruvec = mem_cgroup_lru_add_list(zone, page, lru); + nr_pages = hpage_nr_pages(page); + mem_cgroup_update_lru_size(lruvec, lru, nr_pages); list_move(&page->lru, &lruvec->lists[lru]); - pgmoved += hpage_nr_pages(page); + pgmoved += nr_pages; if (put_page_testzero(page)) { __ClearPageLRU(page); __ClearPageActive(page); - del_page_from_lru_list(zone, page, lru); + del_page_from_lru_list(page, lruvec, lru); if (unlikely(PageCompound(page))) { spin_unlock_irq(&zone->lru_lock); @@ -1443,8 +1452,8 @@ static void shrink_active_list(unsigned long nr_to_scan, */ reclaim_stat->recent_rotated[file] += nr_rotated; - move_active_pages_to_lru(zone, &l_active, &l_hold, lru); - move_active_pages_to_lru(zone, &l_inactive, &l_hold, lru - LRU_ACTIVE); + 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); @@ -3237,6 +3246,7 @@ void check_move_unevictable_pages(struct page **pages, int nr_pages) zone = pagezone; spin_lock_irq(&zone->lru_lock); } + lruvec = mem_cgroup_page_lruvec(page, zone); if (!PageLRU(page) || !PageUnevictable(page)) continue; @@ -3246,11 +3256,8 @@ void check_move_unevictable_pages(struct page **pages, int nr_pages) VM_BUG_ON(PageActive(page)); ClearPageUnevictable(page); - __dec_zone_state(zone, NR_UNEVICTABLE); - lruvec = mem_cgroup_lru_move_lists(zone, page, - LRU_UNEVICTABLE, lru); - list_move(&page->lru, &lruvec->lists[lru]); - __inc_zone_state(zone, NR_INACTIVE_ANON + lru); + del_page_from_lru_list(page, lruvec, LRU_UNEVICTABLE); + add_page_to_lru_list(page, lruvec, lru); pgrescued++; } } |