The patch titled
Subject: mm, pagevec: release/reacquire lru_lock on pgdat change
has been removed from the -mm tree. Its filename was
mm-pagevec-release-reacquire-lru_lock-on-pgdat-change.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
From: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Subject: mm, pagevec: release/reacquire lru_lock on pgdat change
With node-lru, the locking is based on the pgdat. Previously it was
required that a pagevec drain released one zone lru_lock and acquired
another zone lru_lock on every zone change. Now, it's only necessary if
the node changes. The end-result is fewer lock release/acquires if the
pages are all on the same node but in different zones.
Link: http://lkml.kernel.org/r/1468588165-12461-4-git-send-email-mgorman@xxxxxxxxxxxxxxxxxxx
Signed-off-by: Mel Gorman <mgorman@xxxxxxxxxxxxxxxxxxx>
Acked-by: Minchan Kim <minchan@xxxxxxxxxx>
Acked-by: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/swap.c | 20 ++++++++++----------
1 file changed, 10 insertions(+), 10 deletions(-)
diff -puN mm/swap.c~mm-pagevec-release-reacquire-lru_lock-on-pgdat-change mm/swap.c
--- a/mm/swap.c~mm-pagevec-release-reacquire-lru_lock-on-pgdat-change
+++ a/mm/swap.c
@@ -179,26 +179,26 @@ static void pagevec_lru_move_fn(struct p
void *arg)
{
int i;
- struct zone *zone = NULL;
+ struct pglist_data *pgdat = NULL;
struct lruvec *lruvec;
unsigned long flags = 0;
for (i = 0; i < pagevec_count(pvec); i++) {
struct page *page = pvec->pages[i];
- struct zone *pagezone = page_zone(page);
+ struct pglist_data *pagepgdat = page_pgdat(page);
- if (pagezone != zone) {
- if (zone)
- spin_unlock_irqrestore(zone_lru_lock(zone), flags);
- zone = pagezone;
- spin_lock_irqsave(zone_lru_lock(zone), flags);
+ if (pagepgdat != pgdat) {
+ if (pgdat)
+ spin_unlock_irqrestore(&pgdat->lru_lock, flags);
+ pgdat = pagepgdat;
+ spin_lock_irqsave(&pgdat->lru_lock, flags);
}
- lruvec = mem_cgroup_page_lruvec(page, zone->zone_pgdat);
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);
(*move_fn)(page, lruvec, arg);
}
- if (zone)
- spin_unlock_irqrestore(zone_lru_lock(zone), flags);
+ if (pgdat)
+ spin_unlock_irqrestore(&pgdat->lru_lock, flags);
release_pages(pvec->pages, pvec->nr, pvec->cold);
pagevec_reinit(pvec);
}
_
Patches currently in -mm which might be from mgorman@xxxxxxxxxxxxxxxxxxx are
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