diff options
Diffstat (limited to 'mm/migrate.c')
| -rw-r--r-- | mm/migrate.c | 24 |
1 files changed, 16 insertions, 8 deletions
diff --git a/mm/migrate.c b/mm/migrate.c index 55bd355d170d..d8c65a65c61d 100644 --- a/mm/migrate.c +++ b/mm/migrate.c @@ -30,6 +30,7 @@ #include <linux/vmalloc.h> #include <linux/security.h> #include <linux/memcontrol.h> +#include <linux/syscalls.h> #include "internal.h" @@ -357,6 +358,9 @@ static int migrate_page_move_mapping(struct address_space *mapping, __inc_zone_page_state(newpage, NR_FILE_PAGES); write_unlock_irq(&mapping->tree_lock); + if (!PageSwapCache(newpage)) { + mem_cgroup_uncharge_cache_page(page); + } return 0; } @@ -610,7 +614,6 @@ static int move_to_new_page(struct page *newpage, struct page *page) rc = fallback_migrate_page(mapping, newpage, page); if (!rc) { - mem_cgroup_page_migration(page, newpage); remove_migration_ptes(page, newpage); } else newpage->mapping = NULL; @@ -640,6 +643,14 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private, /* page was freed from under us. So we are done. */ goto move_newpage; + charge = mem_cgroup_prepare_migration(page, newpage); + if (charge == -ENOMEM) { + rc = -ENOMEM; + goto move_newpage; + } + /* prepare cgroup just returns 0 or -ENOMEM */ + BUG_ON(charge); + rc = -EAGAIN; if (TestSetPageLocked(page)) { if (!force) @@ -691,19 +702,14 @@ static int unmap_and_move(new_page_t get_new_page, unsigned long private, goto rcu_unlock; } - charge = mem_cgroup_prepare_migration(page); /* Establish migration ptes or remove ptes */ try_to_unmap(page, 1); if (!page_mapped(page)) rc = move_to_new_page(newpage, page); - if (rc) { + if (rc) remove_migration_ptes(page, page); - if (charge) - mem_cgroup_end_migration(page); - } else if (charge) - mem_cgroup_end_migration(newpage); rcu_unlock: if (rcu_locked) rcu_read_unlock(); @@ -724,6 +730,8 @@ unlock: } move_newpage: + if (!charge) + mem_cgroup_end_migration(newpage); /* * Move the new page to the LRU. If migration was not successful * then this will free the page. @@ -1070,7 +1078,6 @@ out2: mmput(mm); return err; } -#endif /* * Call migration functions in the vma_ops that may prepare @@ -1092,3 +1099,4 @@ int migrate_vmas(struct mm_struct *mm, const nodemask_t *to, } return err; } +#endif |