diff options
Diffstat (limited to 'mm/vmscan.c')
| -rw-r--r-- | mm/vmscan.c | 14 |
1 files changed, 12 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c index fe9c39e6b900..73f5cec91063 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -105,6 +105,13 @@ struct scan_control { /* Number of pages freed so far during a call to shrink_zones() */ unsigned long nr_reclaimed; + + /* + * Reclaim pages from a vma. If the page is shared by other tasks + * it is zapped from a vma without reclaim so it ends up remaining + * on memory until last task zap it. + */ + struct vm_area_struct *target_vma; }; #define lru_to_page(_head) (list_entry((_head)->prev, struct page, lru)) @@ -1115,7 +1122,8 @@ static unsigned long shrink_page_list(struct list_head *page_list, */ if (page_mapped(page) && mapping) { switch (try_to_unmap(page, - ttu_flags|TTU_BATCH_FLUSH)) { + ttu_flags|TTU_BATCH_FLUSH, + sc->target_vma)) { case SWAP_FAIL: goto activate_locked; case SWAP_AGAIN: @@ -1324,7 +1332,8 @@ unsigned long reclaim_clean_pages_from_list(struct zone *zone, } #ifdef CONFIG_PROCESS_RECLAIM -unsigned long reclaim_pages_from_list(struct list_head *page_list) +unsigned long reclaim_pages_from_list(struct list_head *page_list, + struct vm_area_struct *vma) { struct scan_control sc = { .gfp_mask = GFP_KERNEL, @@ -1332,6 +1341,7 @@ unsigned long reclaim_pages_from_list(struct list_head *page_list) .may_writepage = 1, .may_unmap = 1, .may_swap = 1, + .target_vma = vma, }; unsigned long nr_reclaimed; |