From 74485cf2bc85d2a10c3653fff4fe956db67ce2a9 Mon Sep 17 00:00:00 2001 From: Johannes Weiner Date: Tue, 15 Mar 2016 14:57:54 -0700 Subject: [PATCH] mm: migrate: consolidate mem_cgroup_migrate() calls Rather than scattering mem_cgroup_migrate() calls all over the place, have a single call from a safe place where every migration operation eventually ends up in - migrate_page_copy(). Signed-off-by: Johannes Weiner Suggested-by: Hugh Dickins Acked-by: Vladimir Davydov Acked-by: Michal Hocko Cc: Mateusz Guzik Cc: Sergey Senozhatsky Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- mm/migrate.c | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/mm/migrate.c b/mm/migrate.c index 848327d4a7ed..568284ec75d4 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -331,8 +331,6 @@ int migrate_page_move_mapping(struct address_space *mapping, if (PageSwapBacked(page)) SetPageSwapBacked(newpage); - mem_cgroup_migrate(page, newpage); - return MIGRATEPAGE_SUCCESS; } @@ -428,8 +426,6 @@ int migrate_page_move_mapping(struct address_space *mapping, } local_irq_enable(); - mem_cgroup_migrate(page, newpage); - return MIGRATEPAGE_SUCCESS; } @@ -471,8 +467,6 @@ int migrate_huge_page_move_mapping(struct address_space *mapping, spin_unlock_irq(&mapping->tree_lock); - mem_cgroup_migrate(page, newpage); - return MIGRATEPAGE_SUCCESS; } @@ -586,6 +580,8 @@ void migrate_page_copy(struct page *newpage, struct page *page) end_page_writeback(newpage); copy_page_owner(page, newpage); + + mem_cgroup_migrate(page, newpage); } /************************************************************ @@ -1846,7 +1842,6 @@ fail_putback: } mlock_migrate_page(new_page, page); - mem_cgroup_migrate(page, new_page); page_remove_rmap(page, true); set_page_owner_migrate_reason(new_page, MR_NUMA_MISPLACED);