diff options
Diffstat (limited to 'mm/mmzone.c')
| -rw-r--r-- | mm/mmzone.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/mmzone.c b/mm/mmzone.c index d8a9b0e1b526..0ae7571e35ab 100644 --- a/mm/mmzone.c +++ b/mm/mmzone.c @@ -81,6 +81,13 @@ void lruvec_init(struct lruvec *lruvec) for_each_lru(lru) INIT_LIST_HEAD(&lruvec->lists[lru]); + /* + * The "Unevictable LRU" is imaginary: though its size is maintained, + * it is never scanned, and unevictable pages are not threaded on it + * (so that their lru fields can be reused to hold mlock_count). + * Poison its list head, so that any operations on it would crash. + */ + list_del(&lruvec->lists[LRU_UNEVICTABLE]); } #if defined(CONFIG_NUMA_BALANCING) && !defined(LAST_CPUPID_NOT_IN_PAGE_FLAGS) |