It doesn't need pointer to cgroup, pointer to zone is enough.
This patch also kills "mz" argument of page_check_references(), it unused after
"mm: memcg: count pte references from every member of the reclaimed hierarch"
Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
---
mm/vmscan.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 49e79d5..44d5821 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -629,7 +629,6 @@ enum page_references {
};
static enum page_references page_check_references(struct page *page,
- struct mem_cgroup_zone *mz,
struct scan_control *sc)
{
int referenced_ptes, referenced_page;
@@ -688,7 +687,7 @@ static enum page_references page_check_references(struct page *page,
* shrink_page_list() returns the number of reclaimed pages
*/
static unsigned long shrink_page_list(struct list_head *page_list,
- struct mem_cgroup_zone *mz,
+ struct zone *zone,
struct scan_control *sc,
unsigned long *ret_nr_dirty,
unsigned long *ret_nr_writeback)
@@ -718,7 +717,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
goto keep;
VM_BUG_ON(PageActive(page));
- VM_BUG_ON(page_zone(page) != mz->zone);
+ VM_BUG_ON(page_zone(page) != zone);
sc->nr_scanned++;
@@ -741,7 +740,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
goto keep;
}
- references = page_check_references(page, mz, sc);
+ references = page_check_references(page, sc);
switch (references) {
case PAGEREF_ACTIVATE:
goto activate_locked;
@@ -931,7 +930,7 @@ keep:
* will encounter the same problem
*/
if (nr_dirty && nr_dirty == nr_congested && global_reclaim(sc))
- zone_set_flag(mz->zone, ZONE_CONGESTED);
+ zone_set_flag(zone, ZONE_CONGESTED);
free_hot_cold_page_list(&free_pages, 1);
@@ -1309,7 +1308,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct mem_cgroup_zone *mz,
update_isolated_counts(mz, &page_list, &nr_anon, &nr_file);
- nr_reclaimed = shrink_page_list(&page_list, mz, sc,
+ nr_reclaimed = shrink_page_list(&page_list, zone, sc,
&nr_dirty, &nr_writeback);
spin_lock_irq(&zone->lru_lock);
--
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