diff options
| -rw-r--r-- | include/linux/memcontrol.h | 4 | ||||
| -rw-r--r-- | include/linux/mm.h | 9 | ||||
| -rw-r--r-- | mm/filemap.c | 2 | ||||
| -rw-r--r-- | mm/memcontrol.c | 13 | ||||
| -rw-r--r-- | mm/migrate.c | 15 | ||||
| -rw-r--r-- | mm/shmem.c | 2 |
6 files changed, 20 insertions, 25 deletions
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 09b449849369..c45ab3fb6e04 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -300,7 +300,7 @@ void mem_cgroup_cancel_charge(struct page *page, struct mem_cgroup *memcg, void mem_cgroup_uncharge(struct page *page); void mem_cgroup_uncharge_list(struct list_head *page_list); -void mem_cgroup_replace_page(struct page *oldpage, struct page *newpage); +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 *); @@ -580,7 +580,7 @@ static inline void mem_cgroup_uncharge_list(struct list_head *page_list) { } -static inline void mem_cgroup_replace_page(struct page *old, struct page *new) +static inline void mem_cgroup_migrate(struct page *old, struct page *new) { } diff --git a/include/linux/mm.h b/include/linux/mm.h index b97243d6aa49..6b471d1fc8df 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -905,20 +905,11 @@ static inline struct mem_cgroup *page_memcg(struct page *page) { return page->mem_cgroup; } - -static inline void set_page_memcg(struct page *page, struct mem_cgroup *memcg) -{ - page->mem_cgroup = memcg; -} #else static inline struct mem_cgroup *page_memcg(struct page *page) { return NULL; } - -static inline void set_page_memcg(struct page *page, struct mem_cgroup *memcg) -{ -} #endif /* diff --git a/mm/filemap.c b/mm/filemap.c index ee8140cf935d..d8317caffe85 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -577,7 +577,7 @@ int replace_page_cache_page(struct page *old, struct page *new, gfp_t gfp_mask) __inc_zone_page_state(new, NR_SHMEM); spin_unlock_irqrestore(&mapping->tree_lock, flags); unlock_page_memcg(memcg); - mem_cgroup_replace_page(old, new); + mem_cgroup_migrate(old, new); radix_tree_preload_end(); if (freepage) freepage(old); diff --git a/mm/memcontrol.c b/mm/memcontrol.c index 864e237f32d9..64506b2eef34 100644 --- a/mm/memcontrol.c +++ b/mm/memcontrol.c @@ -4457,7 +4457,7 @@ static int mem_cgroup_move_account(struct page *page, VM_BUG_ON(compound && !PageTransHuge(page)); /* - * Prevent mem_cgroup_replace_page() from looking at + * Prevent mem_cgroup_migrate() from looking at * page->mem_cgroup of its source page while we change it. */ ret = -EBUSY; @@ -5486,16 +5486,17 @@ void mem_cgroup_uncharge_list(struct list_head *page_list) } /** - * mem_cgroup_replace_page - migrate a charge to another page - * @oldpage: currently charged page - * @newpage: page to transfer the charge to + * mem_cgroup_migrate - charge a page's replacement + * @oldpage: currently circulating page + * @newpage: replacement page * - * Migrate the charge from @oldpage to @newpage. + * Charge @newpage as a replacement page for @oldpage. @oldpage will + * be uncharged upon free. * * Both pages must be locked, @newpage->mapping must be set up. * Either or both pages might be on the LRU already. */ -void mem_cgroup_replace_page(struct page *oldpage, struct page *newpage) +void mem_cgroup_migrate(struct page *oldpage, struct page *newpage) { struct mem_cgroup *memcg; unsigned int nr_pages; diff --git a/mm/migrate.c b/mm/migrate.c index 432ecd0172cd..848327d4a7ed 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -326,12 +326,13 @@ int migrate_page_move_mapping(struct address_space *mapping, return -EAGAIN; /* No turning back from here */ - set_page_memcg(newpage, page_memcg(page)); newpage->index = page->index; newpage->mapping = page->mapping; if (PageSwapBacked(page)) SetPageSwapBacked(newpage); + mem_cgroup_migrate(page, newpage); + return MIGRATEPAGE_SUCCESS; } @@ -373,7 +374,6 @@ int migrate_page_move_mapping(struct address_space *mapping, * Now we know that no one else is looking at the page: * no turning back from here. */ - set_page_memcg(newpage, page_memcg(page)); newpage->index = page->index; newpage->mapping = page->mapping; if (PageSwapBacked(page)) @@ -428,6 +428,8 @@ int migrate_page_move_mapping(struct address_space *mapping, } local_irq_enable(); + mem_cgroup_migrate(page, newpage); + return MIGRATEPAGE_SUCCESS; } @@ -458,9 +460,9 @@ int migrate_huge_page_move_mapping(struct address_space *mapping, return -EAGAIN; } - set_page_memcg(newpage, page_memcg(page)); newpage->index = page->index; newpage->mapping = page->mapping; + get_page(newpage); radix_tree_replace_slot(pslot, newpage); @@ -468,6 +470,9 @@ int migrate_huge_page_move_mapping(struct address_space *mapping, page_unfreeze_refs(page, expected_count - 1); spin_unlock_irq(&mapping->tree_lock); + + mem_cgroup_migrate(page, newpage); + return MIGRATEPAGE_SUCCESS; } @@ -775,7 +780,6 @@ static int move_to_new_page(struct page *newpage, struct page *page, * page is freed; but stats require that PageAnon be left as PageAnon. */ if (rc == MIGRATEPAGE_SUCCESS) { - set_page_memcg(page, NULL); if (!PageAnon(page)) page->mapping = NULL; } @@ -1842,8 +1846,7 @@ fail_putback: } mlock_migrate_page(new_page, page); - set_page_memcg(new_page, page_memcg(page)); - set_page_memcg(page, NULL); + mem_cgroup_migrate(page, new_page); page_remove_rmap(page, true); set_page_owner_migrate_reason(new_page, MR_NUMA_MISPLACED); diff --git a/mm/shmem.c b/mm/shmem.c index 440e2a7e6c1c..1acfdbc4bd9e 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -1116,7 +1116,7 @@ static int shmem_replace_page(struct page **pagep, gfp_t gfp, */ oldpage = newpage; } else { - mem_cgroup_replace_page(oldpage, newpage); + mem_cgroup_migrate(oldpage, newpage); lru_cache_add_anon(newpage); *pagep = newpage; } |