From: Muchun Song <songmuchun@bytedance.com>
To: guro@fb.com, hannes@cmpxchg.org, mhocko@kernel.org,
akpm@linux-foundation.org, shakeelb@google.com,
vdavydov.dev@gmail.com
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
duanxiongchun@bytedance.com,
Muchun Song <songmuchun@bytedance.com>,
Michal Hocko <mhocko@suse.com>
Subject: [PATCH v2 3/8] mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec
Date: Fri, 16 Apr 2021 13:14:02 +0800 [thread overview]
Message-ID: <20210416051407.54878-4-songmuchun@bytedance.com> (raw)
In-Reply-To: <20210416051407.54878-1-songmuchun@bytedance.com>
All the callers of mem_cgroup_page_lruvec() just pass page_pgdat(page)
as the 2nd parameter to it (except isolate_migratepages_block()). But
for isolate_migratepages_block(), the page_pgdat(page) is also equal
to the local variable of @pgdat. So mem_cgroup_page_lruvec() do not
need the pgdat parameter. Just remove it to simplify the code.
Signed-off-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Reviewed-by: Shakeel Butt <shakeelb@google.com>
Acked-by: Roman Gushchin <guro@fb.com>
Acked-by: Michal Hocko <mhocko@suse.com>
---
include/linux/memcontrol.h | 10 +++++-----
mm/compaction.c | 2 +-
mm/memcontrol.c | 9 +++------
mm/swap.c | 2 +-
mm/workingset.c | 2 +-
5 files changed, 11 insertions(+), 14 deletions(-)
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index c193be760709..f2a5aaba3577 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -743,13 +743,12 @@ static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
/**
* mem_cgroup_page_lruvec - return lruvec for isolating/putting an LRU page
* @page: the page
- * @pgdat: pgdat of the page
*
* This function relies on page->mem_cgroup being stable.
*/
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
- struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
{
+ pg_data_t *pgdat = page_pgdat(page);
struct mem_cgroup *memcg = page_memcg(page);
VM_WARN_ON_ONCE_PAGE(!memcg && !mem_cgroup_disabled(), page);
@@ -1221,9 +1220,10 @@ static inline struct lruvec *mem_cgroup_lruvec(struct mem_cgroup *memcg,
return &pgdat->__lruvec;
}
-static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page,
- struct pglist_data *pgdat)
+static inline struct lruvec *mem_cgroup_page_lruvec(struct page *page)
{
+ pg_data_t *pgdat = page_pgdat(page);
+
return &pgdat->__lruvec;
}
diff --git a/mm/compaction.c b/mm/compaction.c
index 8c5028bfbd56..1c500e697c88 100644
--- a/mm/compaction.c
+++ b/mm/compaction.c
@@ -994,7 +994,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
if (!TestClearPageLRU(page))
goto isolate_fail_put;
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
/* If we already hold the lock, we can skip some rechecking */
if (lruvec != locked) {
diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 50e3cf1e263e..caf193088beb 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1181,9 +1181,8 @@ void lruvec_memcg_debug(struct lruvec *lruvec, struct page *page)
struct lruvec *lock_page_lruvec(struct page *page)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock(&lruvec->lru_lock);
lruvec_memcg_debug(lruvec, page);
@@ -1194,9 +1193,8 @@ struct lruvec *lock_page_lruvec(struct page *page)
struct lruvec *lock_page_lruvec_irq(struct page *page)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock_irq(&lruvec->lru_lock);
lruvec_memcg_debug(lruvec, page);
@@ -1207,9 +1205,8 @@ struct lruvec *lock_page_lruvec_irq(struct page *page)
struct lruvec *lock_page_lruvec_irqsave(struct page *page, unsigned long *flags)
{
struct lruvec *lruvec;
- struct pglist_data *pgdat = page_pgdat(page);
- lruvec = mem_cgroup_page_lruvec(page, pgdat);
+ lruvec = mem_cgroup_page_lruvec(page);
spin_lock_irqsave(&lruvec->lru_lock, *flags);
lruvec_memcg_debug(lruvec, page);
diff --git a/mm/swap.c b/mm/swap.c
index a75a8265302b..e0d5699213cc 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -313,7 +313,7 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages)
void lru_note_cost_page(struct page *page)
{
- lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)),
+ lru_note_cost(mem_cgroup_page_lruvec(page),
page_is_file_lru(page), thp_nr_pages(page));
}
diff --git a/mm/workingset.c b/mm/workingset.c
index b7cdeca5a76d..4f7a306ce75a 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -408,7 +408,7 @@ void workingset_activation(struct page *page)
memcg = page_memcg_rcu(page);
if (!mem_cgroup_disabled() && !memcg)
goto out;
- lruvec = mem_cgroup_page_lruvec(page, page_pgdat(page));
+ lruvec = mem_cgroup_page_lruvec(page);
workingset_age_nonresident(lruvec, thp_nr_pages(page));
out:
rcu_read_unlock();
--
2.11.0
next prev parent reply other threads:[~2021-04-16 5:15 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-16 5:13 [PATCH v2 0/8] memcontrol code cleanup and simplification Muchun Song
2021-04-16 5:14 ` [PATCH v2 1/8] mm: memcontrol: fix page charging in page replacement Muchun Song
2021-04-16 5:14 ` [PATCH v2 2/8] mm: memcontrol: bail out early when !mm in get_mem_cgroup_from_mm Muchun Song
2021-04-16 5:14 ` Muchun Song [this message]
2021-04-16 5:14 ` [PATCH v2 4/8] mm: memcontrol: simplify lruvec_holds_page_lru_lock Muchun Song
2021-04-16 5:14 ` [PATCH v2 5/8] mm: memcontrol: rename lruvec_holds_page_lru_lock to page_matches_lruvec Muchun Song
2021-04-16 6:01 ` Michal Hocko
2021-04-16 15:20 ` Johannes Weiner
2021-04-17 2:52 ` [External] " Muchun Song
2021-04-16 15:34 ` Shakeel Butt
2021-04-16 5:14 ` [PATCH v2 6/8] mm: memcontrol: simplify the logic of objcg pinning memcg Muchun Song
2021-04-16 5:14 ` [PATCH v2 7/8] mm: memcontrol: move obj_cgroup_uncharge_pages() out of css_set_lock Muchun Song
2021-04-16 5:14 ` [PATCH v2 8/8] mm: vmscan: remove noinline_for_stack Muchun Song
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