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mm: memcontrol: remove the pgdata parameter of mem_cgroup_page_lruvec 

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.

Link: https://lkml.kernel.org/r/20210417043538.9793-4-songmuchun@bytedance.com
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>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Xiongchun Duan <duanxiongchun@bytedance.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Muchun Song 2021-06-28 19:37:53 -07:00 committed by Linus Torvalds
parent 2884b6b7ee
commit a984226f45
5 changed files with 11 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
include/linux/memcontrol.h
View File

@ -743,13 +743,12 @@ out:
/**
* 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;
}

2
mm/compaction.c
View File

@ -1028,7 +1028,7 @@ 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) {

9
mm/memcontrol.c
View File

@ -1199,9 +1199,8 @@ 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);
@ -1212,9 +1211,8 @@ 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);
@ -1225,9 +1223,8 @@ 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);

2
mm/swap.c
View File

@ -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));
}

2
mm/workingset.c
View File

@ -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();