#include <linux/vmalloc.h>
#include <linux/security.h>
#include <linux/memcontrol.h>
+#include <linux/syscalls.h>
#include "internal.h"
__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;
}
rc = fallback_migrate_page(mapping, newpage, page);
if (!rc) {
- mem_cgroup_page_migration(page, newpage);
remove_migration_ptes(page, newpage);
} else
newpage->mapping = NULL;
/* 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)
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();
}
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.
mmput(mm);
return err;
}
-#endif
/*
* Call migration functions in the vma_ops that may prepare
}
return err;
}
+#endif