diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/vmscan.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index 827bf674577a8d..e5117b6897a97b 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -71,6 +71,9 @@ struct scan_control { int may_writepage; + /* Can pages be swapped as part of reclaim? */ + int may_swap; + /* This context's SWAP_CLUSTER_MAX. If freeing memory for * suspend, we effectively ignore SWAP_CLUSTER_MAX. * In this context, it doesn't matter that we scan the @@ -458,6 +461,8 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc) * Try to allocate it some swap space here. */ if (PageAnon(page) && !PageSwapCache(page)) { + if (!sc->may_swap) + goto keep_locked; if (!add_to_swap(page, GFP_ATOMIC)) goto activate_locked; } @@ -1166,6 +1171,7 @@ int try_to_free_pages(struct zone **zones, gfp_t gfp_mask) sc.gfp_mask = gfp_mask; sc.may_writepage = 0; + sc.may_swap = 1; inc_page_state(allocstall); @@ -1268,6 +1274,7 @@ loop_again: total_reclaimed = 0; sc.gfp_mask = GFP_KERNEL; sc.may_writepage = 0; + sc.may_swap = 1; sc.nr_mapped = read_page_state(nr_mapped); inc_page_state(pageoutrun); |