The patch titled
Subject: mm-thp-make-deferred-split-shrinker-memcg-aware-v6
has been added to the -mm tree. Its filename is
mm-thp-make-deferred-split-shrinker-memcg-aware-v6.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/mm-thp-make-deferred-split-shrinker-memcg-aware-v6.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/mm-thp-make-deferred-split-shrinker-memcg-aware-v6.patch
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------------------------------------------------------
From: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Subject: mm-thp-make-deferred-split-shrinker-memcg-aware-v6
Simplified deferred split queue dereference per Kirill Tkhai
Link: http://lkml.kernel.org/r/1566496227-84952-5-git-send-email-yang.shi@xxxxxxxxxxxxxxxxx
Signed-off-by: Yang Shi <yang.shi@xxxxxxxxxxxxxxxxx>
Acked-by: Kirill A. Shutemov <kirill.shutemov@xxxxxxxxxxxxxxx>
Reviewed-by: Kirill Tkhai <ktkhai@xxxxxxxxxxxxx>
Cc: Johannes Weiner <hannes@xxxxxxxxxxx>
Cc: Michal Hocko <mhocko@xxxxxxxx>
Cc: "Kirill A . Shutemov" <kirill.shutemov@xxxxxxxxxxxxxxx>
Cc: Hugh Dickins <hughd@xxxxxxxxxx>
Cc: Shakeel Butt <shakeelb@xxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Qian Cai <cai@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/huge_memory.c | 18 ++++--------------
1 file changed, 4 insertions(+), 14 deletions(-)
--- a/mm/huge_memory.c~mm-thp-make-deferred-split-shrinker-memcg-aware-v6
+++ a/mm/huge_memory.c
@@ -2889,18 +2889,12 @@ void deferred_split_huge_page(struct pag
static unsigned long deferred_split_count(struct shrinker *shrink,
struct shrink_control *sc)
{
- struct deferred_split *ds_queue;
struct pglist_data *pgdata = NODE_DATA(sc->nid);
+ struct deferred_split *ds_queue = &pgdata->deferred_split_queue;
#ifdef CONFIG_MEMCG
- if (!sc->memcg) {
- ds_queue = &pgdata->deferred_split_queue;
- return READ_ONCE(ds_queue->split_queue_len);
- }
-
- ds_queue = &sc->memcg->deferred_split_queue;
-#else
- ds_queue = &pgdata->deferred_split_queue;
+ if (sc->memcg)
+ ds_queue = &sc->memcg->deferred_split_queue;
#endif
return READ_ONCE(ds_queue->split_queue_len);
}
@@ -2909,7 +2903,7 @@ static unsigned long deferred_split_scan
struct shrink_control *sc)
{
struct pglist_data *pgdata = NODE_DATA(sc->nid);
- struct deferred_split *ds_queue;
+ struct deferred_split *ds_queue = &pgdata->deferred_split_queue;
unsigned long flags;
LIST_HEAD(list), *pos, *next;
struct page *page;
@@ -2918,10 +2912,6 @@ static unsigned long deferred_split_scan
#ifdef CONFIG_MEMCG
if (sc->memcg)
ds_queue = &sc->memcg->deferred_split_queue;
- else
- ds_queue = &pgdata->deferred_split_queue;
-#else
- ds_queue = &pgdata->deferred_split_queue;
#endif
spin_lock_irqsave(&ds_queue->split_queue_lock, flags);
_
Patches currently in -mm which might be from yang.shi@xxxxxxxxxxxxxxxxx are
mm-thp-extract-split_queue_-into-a-struct.patch
mm-move-mem_cgroup_uncharge-out-of-__page_cache_release.patch
mm-shrinker-make-shrinker-not-depend-on-memcg-kmem.patch
mm-shrinker-make-shrinker-not-depend-on-memcg-kmem-v6.patch
mm-thp-make-deferred-split-shrinker-memcg-aware.patch
mm-thp-make-deferred-split-shrinker-memcg-aware-v6.patch
mm-account-deferred-split-thps-into-memavailable.patch
