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mm/swap.c: don't pass "enum lru_list" to del_page_from_lru_list()

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The parameter is redundant in the sense that it can be potentially
extracted from the "struct page" parameter by page_lru(). We need to
make sure that existing PageActive() or PageUnevictable() remains
until the function returns. A few places don't conform, and simple
reordering fixes them.

This patch may have left page_off_lru() seemingly odd, and we'll take
care of it in the next patch.

Link: https://lore.kernel.org/linux-mm/20201207220949.830352-6-yuzhao@google.com/
Link: https://lkml.kernel.org/r/20210122220600.906146-6-yuzhao@google.com
Signed-off-by: Yu Zhao <yuzhao@google.com>
Cc: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@kernel.org>
Cc: Roman Gushchin <guro@fb.com>
Cc: Vladimir Davydov <vdavydov.dev@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Yu Zhao 2021-02-24 12:08:25 -08:00 committed by Linus Torvalds
parent 861404536a
commit 46ae6b2cc2
5 changed files with 17 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/linux/mm_inline.h
View File

@ -124,9 +124,10 @@ static __always_inline void add_page_to_lru_list_tail(struct page *page,
}
static __always_inline void del_page_from_lru_list(struct page *page,
struct lruvec *lruvec, enum lru_list lru)
struct lruvec *lruvec)
{
list_del(&page->lru);
update_lru_size(lruvec, lru, page_zonenum(page), -thp_nr_pages(page));
update_lru_size(lruvec, page_lru(page), page_zonenum(page),
-thp_nr_pages(page));
}
#endif

2
mm/compaction.c
View File

@ -1034,7 +1034,7 @@ isolate_migratepages_block(struct compact_control *cc, unsigned long low_pfn,
low_pfn += compound_nr(page) - 1;
/* Successfully isolated */
del_page_from_lru_list(page, lruvec, page_lru(page));
del_page_from_lru_list(page, lruvec);
mod_node_page_state(page_pgdat(page),
NR_ISOLATED_ANON + page_is_file_lru(page),
thp_nr_pages(page));

3
mm/mlock.c
View File

@ -278,8 +278,7 @@ static void __munlock_pagevec(struct pagevec *pvec, struct zone *zone)
*/
if (TestClearPageLRU(page)) {
lruvec = relock_page_lruvec_irq(page, lruvec);
del_page_from_lru_list(page, lruvec,
page_lru(page));
del_page_from_lru_list(page, lruvec);
continue;
} else
__munlock_isolation_failed(page);

26
mm/swap.c
View File

@ -85,7 +85,8 @@ static void __page_cache_release(struct page *page)
lruvec = lock_page_lruvec_irqsave(page, &flags);
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
del_page_from_lru_list(page, lruvec, page_off_lru(page));
del_page_from_lru_list(page, lruvec);
page_off_lru(page);
unlock_page_lruvec_irqrestore(lruvec, flags);
}
__ClearPageWaiters(page);
@ -229,7 +230,7 @@ static void pagevec_lru_move_fn(struct pagevec *pvec,
static void pagevec_move_tail_fn(struct page *page, struct lruvec *lruvec)
{
if (!PageUnevictable(page)) {
del_page_from_lru_list(page, lruvec, page_lru(page));
del_page_from_lru_list(page, lruvec);
ClearPageActive(page);
add_page_to_lru_list_tail(page, lruvec);
__count_vm_events(PGROTATED, thp_nr_pages(page));
@ -308,10 +309,9 @@ void lru_note_cost_page(struct page *page)
static void __activate_page(struct page *page, struct lruvec *lruvec)
{
if (!PageActive(page) && !PageUnevictable(page)) {
int lru = page_lru_base_type(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec, lru);
del_page_from_lru_list(page, lruvec);
SetPageActive(page);
add_page_to_lru_list(page, lruvec);
trace_mm_lru_activate(page);
@ -518,8 +518,7 @@ void lru_cache_add_inactive_or_unevictable(struct page *page,
*/
static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec)
{
int lru;
bool active;
bool active = PageActive(page);
int nr_pages = thp_nr_pages(page);
if (PageUnevictable(page))
@ -529,10 +528,7 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec)
if (page_mapped(page))
return;
active = PageActive(page);
lru = page_lru_base_type(page);
del_page_from_lru_list(page, lruvec, lru + active);
del_page_from_lru_list(page, lruvec);
ClearPageActive(page);
ClearPageReferenced(page);
@ -563,10 +559,9 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec)
static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec)
{
if (PageActive(page) && !PageUnevictable(page)) {
int lru = page_lru_base_type(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE);
del_page_from_lru_list(page, lruvec);
ClearPageActive(page);
ClearPageReferenced(page);
add_page_to_lru_list(page, lruvec);
@ -581,11 +576,9 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec)
{
if (PageAnon(page) && PageSwapBacked(page) &&
!PageSwapCache(page) && !PageUnevictable(page)) {
bool active = PageActive(page);
int nr_pages = thp_nr_pages(page);
del_page_from_lru_list(page, lruvec,
LRU_INACTIVE_ANON + active);
del_page_from_lru_list(page, lruvec);
ClearPageActive(page);
ClearPageReferenced(page);
/*
@ -919,7 +912,8 @@ void release_pages(struct page **pages, int nr)
VM_BUG_ON_PAGE(!PageLRU(page), page);
__ClearPageLRU(page);
del_page_from_lru_list(page, lruvec, page_off_lru(page));
del_page_from_lru_list(page, lruvec);
page_off_lru(page);
}
__ClearPageWaiters(page);

4
mm/vmscan.c
View File

@ -1766,7 +1766,7 @@ int isolate_lru_page(struct page *page)
get_page(page);
lruvec = lock_page_lruvec_irq(page);
del_page_from_lru_list(page, lruvec, page_lru(page));
del_page_from_lru_list(page, lruvec);
unlock_page_lruvec_irq(lruvec);
ret = 0;
}
@ -4283,8 +4283,8 @@ void check_move_unevictable_pages(struct pagevec *pvec)
lruvec = relock_page_lruvec_irq(page, lruvec);
if (page_evictable(page) && PageUnevictable(page)) {
VM_BUG_ON_PAGE(PageActive(page), page);
del_page_from_lru_list(page, lruvec);
ClearPageUnevictable(page);
del_page_from_lru_list(page, lruvec, LRU_UNEVICTABLE);
add_page_to_lru_list(page, lruvec);
pgrescued += nr_pages;
}