Replace pgdat lru_lock with lruvec lru_lock.
Signed-off-by: Alex Shi <[email protected]>
Cc: Andrew Morton <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Vlastimil Babka <[email protected]>
Cc: Jason Gunthorpe <[email protected]>
Cc: Matthew Wilcox <[email protected]>
Cc: Mauro Carvalho Chehab <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Nikolay Borisov <[email protected]>
Cc: Ira Weiny <[email protected]>
Cc: Andrey Ryabinin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
mm/swap.c | 40 +++++++++++++++++++++-------------------
1 file changed, 21 insertions(+), 19 deletions(-)
diff --git a/mm/swap.c b/mm/swap.c
index 24a2b3456e10..798bffe7875d 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -724,8 +724,7 @@ void release_pages(struct page **pages, int nr)
{
int i;
LIST_HEAD(pages_to_free);
- struct pglist_data *locked_pgdat = NULL;
- struct lruvec *lruvec;
+ struct lruvec *locked_lruvec = NULL;
unsigned long uninitialized_var(flags);
unsigned int uninitialized_var(lock_batch);
@@ -737,19 +736,19 @@ void release_pages(struct page **pages, int nr)
* excessive with a continuous string of pages from the
* same pgdat. The lock is held only if pgdat != NULL.
*/
- if (locked_pgdat && ++lock_batch == SWAP_CLUSTER_MAX) {
- spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock,
flags);
- locked_pgdat = NULL;
+ if (locked_lruvec && ++lock_batch == SWAP_CLUSTER_MAX) {
+ spin_unlock_irqrestore(&locked_lruvec->lru_lock, flags);
+ locked_lruvec = NULL;
}
if (is_huge_zero_page(page))
continue;
if (is_zone_device_page(page)) {
- if (locked_pgdat) {
-
spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock,
+ if (locked_lruvec) {
+ spin_unlock_irqrestore(&locked_lruvec->lru_lock,
flags);
- locked_pgdat = NULL;
+ locked_lruvec = NULL;
}
/*
* ZONE_DEVICE pages that return 'false' from
@@ -766,27 +765,30 @@ void release_pages(struct page **pages, int nr)
continue;
if (PageCompound(page)) {
- if (locked_pgdat) {
-
spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags);
- locked_pgdat = NULL;
+ if (locked_lruvec) {
+
spin_unlock_irqrestore(&locked_lruvec->lru_lock, flags);
+ locked_lruvec = NULL;
}
__put_compound_page(page);
continue;
}
if (PageLRU(page)) {
+ struct lruvec *lruvec;
struct pglist_data *pgdat = page_pgdat(page);
- if (pgdat != locked_pgdat) {
- if (locked_pgdat)
-
spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock,
+ lruvec = mem_cgroup_page_lruvec(page, pgdat);
+
+ if (lruvec != locked_lruvec) {
+ if (locked_lruvec)
+
spin_unlock_irqrestore(&locked_lruvec->lru_lock,
flags);
lock_batch = 0;
- locked_pgdat = pgdat;
-
spin_lock_irqsave(&locked_pgdat->lruvec.lru_lock, flags);
+ locked_lruvec = lruvec;
+ spin_lock_irqsave(&locked_lruvec->lru_lock,
flags);
+ sync_lruvec_pgdat(lruvec, pgdat);
}
- lruvec = mem_cgroup_page_lruvec(page, locked_pgdat);
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
del_page_from_lru_list(page, lruvec,
page_off_lru(page));
@@ -798,8 +800,8 @@ void release_pages(struct page **pages, int nr)
list_add(&page->lru, &pages_to_free);
}
- if (locked_pgdat)
- spin_unlock_irqrestore(&locked_pgdat->lruvec.lru_lock, flags);
+ if (locked_lruvec)
+ spin_unlock_irqrestore(&locked_lruvec->lru_lock, flags);
mem_cgroup_uncharge_list(&pages_to_free);
free_unref_page_list(&pages_to_free);
--
1.8.3.1
