diff options
| -rw-r--r-- | mm/vmscan.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 5aae621bb534..b8aa077caf65 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -969,7 +969,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, goto keep; VM_BUG_ON_PAGE(PageActive(page), page); - VM_BUG_ON_PAGE(page_zone(page) != zone, page); + if (zone) + VM_BUG_ON_PAGE(page_zone(page) != zone, page); sc->nr_scanned++; @@ -1048,7 +1049,7 @@ static unsigned long shrink_page_list(struct list_head *page_list, /* Case 1 above */ if (current_is_kswapd() && PageReclaim(page) && - test_bit(ZONE_WRITEBACK, &zone->flags)) { + (zone && test_bit(ZONE_WRITEBACK, &zone->flags))) { nr_immediate++; goto keep_locked; @@ -1134,7 +1135,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, */ if (page_is_file_cache(page) && (!current_is_kswapd() || - !test_bit(ZONE_DIRTY, &zone->flags))) { + (zone && + !test_bit(ZONE_DIRTY, &zone->flags)))) { /* * Immediately reclaim when written back. * Similar in principal to deactivate_page() |