From: Yu Zhao <yuzhao@google.com>
To: Andrew Morton <akpm@linux-foundation.org>,
Hugh Dickins <hughd@google.com>,
Alex Shi <alex.shi@linux.alibaba.com>
Cc: Michal Hocko <mhocko@kernel.org>,
Johannes Weiner <hannes@cmpxchg.org>,
Vladimir Davydov <vdavydov.dev@gmail.com>,
Roman Gushchin <guro@fb.com>, Vlastimil Babka <vbabka@suse.cz>,
Matthew Wilcox <willy@infradead.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Yu Zhao <yuzhao@google.com>
Subject: [PATCH v2 03/10] mm: don't pass "enum lru_list" to lru list addition functions
Date: Fri, 22 Jan 2021 15:05:53 -0700 [thread overview]
Message-ID: <20210122220600.906146-4-yuzhao@google.com> (raw)
In-Reply-To: <20210122220600.906146-1-yuzhao@google.com>
The "enum lru_list" parameter to add_page_to_lru_list() and
add_page_to_lru_list_tail() is redundant in the sense that it can
be extracted from the "struct page" parameter by page_lru().
A caveat is that we need to make sure PageActive() or
PageUnevictable() is correctly set or cleared before calling
these two functions. And they are indeed.
Link: https://lore.kernel.org/linux-mm/20201207220949.830352-4-yuzhao@google.com/
Signed-off-by: Yu Zhao <yuzhao@google.com>
---
include/linux/mm_inline.h | 8 ++++++--
mm/swap.c | 15 +++++++--------
mm/vmscan.c | 6 ++----
3 files changed, 15 insertions(+), 14 deletions(-)
diff --git a/include/linux/mm_inline.h b/include/linux/mm_inline.h
index 2889741f450a..130ba3201d3f 100644
--- a/include/linux/mm_inline.h
+++ b/include/linux/mm_inline.h
@@ -106,15 +106,19 @@ static __always_inline enum lru_list page_lru(struct page *page)
}
static __always_inline void add_page_to_lru_list(struct page *page,
- struct lruvec *lruvec, enum lru_list lru)
+ struct lruvec *lruvec)
{
+ enum lru_list lru = page_lru(page);
+
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add(&page->lru, &lruvec->lists[lru]);
}
static __always_inline void add_page_to_lru_list_tail(struct page *page,
- struct lruvec *lruvec, enum lru_list lru)
+ struct lruvec *lruvec)
{
+ enum lru_list lru = page_lru(page);
+
update_lru_size(lruvec, lru, page_zonenum(page), thp_nr_pages(page));
list_add_tail(&page->lru, &lruvec->lists[lru]);
}
diff --git a/mm/swap.c b/mm/swap.c
index 490553f3f9ef..4b058ef37add 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -231,7 +231,7 @@ 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));
ClearPageActive(page);
- add_page_to_lru_list_tail(page, lruvec, page_lru(page));
+ add_page_to_lru_list_tail(page, lruvec);
__count_vm_events(PGROTATED, thp_nr_pages(page));
}
}
@@ -313,8 +313,7 @@ static void __activate_page(struct page *page, struct lruvec *lruvec)
del_page_from_lru_list(page, lruvec, lru);
SetPageActive(page);
- lru += LRU_ACTIVE;
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
trace_mm_lru_activate(page);
__count_vm_events(PGACTIVATE, nr_pages);
@@ -543,14 +542,14 @@ static void lru_deactivate_file_fn(struct page *page, struct lruvec *lruvec)
* It can make readahead confusing. But race window
* is _really_ small and it's non-critical problem.
*/
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
SetPageReclaim(page);
} else {
/*
* The page's writeback ends up during pagevec
* We moves tha page into tail of inactive.
*/
- add_page_to_lru_list_tail(page, lruvec, lru);
+ add_page_to_lru_list_tail(page, lruvec);
__count_vm_events(PGROTATED, nr_pages);
}
@@ -570,7 +569,7 @@ static void lru_deactivate_fn(struct page *page, struct lruvec *lruvec)
del_page_from_lru_list(page, lruvec, lru + LRU_ACTIVE);
ClearPageActive(page);
ClearPageReferenced(page);
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
__count_vm_events(PGDEACTIVATE, nr_pages);
__count_memcg_events(lruvec_memcg(lruvec), PGDEACTIVATE,
@@ -595,7 +594,7 @@ static void lru_lazyfree_fn(struct page *page, struct lruvec *lruvec)
* anonymous pages
*/
ClearPageSwapBacked(page);
- add_page_to_lru_list(page, lruvec, LRU_INACTIVE_FILE);
+ add_page_to_lru_list(page, lruvec);
__count_vm_events(PGLAZYFREE, nr_pages);
__count_memcg_events(lruvec_memcg(lruvec), PGLAZYFREE,
@@ -1005,7 +1004,7 @@ static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec)
__count_vm_events(UNEVICTABLE_PGCULLED, nr_pages);
}
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
trace_mm_lru_insertion(page, lru);
}
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 19875660e8f8..09e4f97488c9 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1867,7 +1867,7 @@ static unsigned noinline_for_stack move_pages_to_lru(struct lruvec *lruvec,
* inhibits memcg migration).
*/
VM_BUG_ON_PAGE(!lruvec_holds_page_lru_lock(page, lruvec), page);
- add_page_to_lru_list(page, lruvec, page_lru(page));
+ add_page_to_lru_list(page, lruvec);
nr_pages = thp_nr_pages(page);
nr_moved += nr_pages;
if (PageActive(page))
@@ -4282,12 +4282,10 @@ void check_move_unevictable_pages(struct pagevec *pvec)
lruvec = relock_page_lruvec_irq(page, lruvec);
if (page_evictable(page) && PageUnevictable(page)) {
- enum lru_list lru = page_lru_base_type(page);
-
VM_BUG_ON_PAGE(PageActive(page), page);
ClearPageUnevictable(page);
del_page_from_lru_list(page, lruvec, LRU_UNEVICTABLE);
- add_page_to_lru_list(page, lruvec, lru);
+ add_page_to_lru_list(page, lruvec);
pgrescued += nr_pages;
}
SetPageLRU(page);
--
2.30.0.280.ga3ce27912f-goog
next prev parent reply other threads:[~2021-01-22 22:09 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-22 22:05 [PATCH v2 00/10] mm: lru related cleanups Yu Zhao
2021-01-22 22:05 ` [PATCH v2 01/10] mm: use add_page_to_lru_list() Yu Zhao
2021-01-26 18:57 ` Vlastimil Babka
2021-01-27 2:12 ` Miaohe Lin
2021-01-22 22:05 ` [PATCH v2 02/10] mm: shuffle lru list addition and deletion functions Yu Zhao
2021-01-26 18:58 ` Vlastimil Babka
2021-01-27 2:14 ` Miaohe Lin
2021-01-22 22:05 ` Yu Zhao [this message]
2021-01-26 19:13 ` [PATCH v2 03/10] mm: don't pass "enum lru_list" to lru list addition functions Vlastimil Babka
2021-01-26 21:34 ` Yu Zhao
2021-01-27 10:51 ` Vlastimil Babka
2021-01-26 22:01 ` Matthew Wilcox
2021-01-26 22:14 ` Yu Zhao
2021-02-23 22:50 ` Andrew Morton
2021-02-24 5:29 ` Yu Zhao
2021-02-24 8:06 ` Alex Shi
2021-02-24 8:37 ` Yu Zhao
2021-02-24 9:01 ` Alex Shi
2021-01-22 22:05 ` [PATCH v2 04/10] mm: don't pass "enum lru_list" to trace_mm_lru_insertion() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 05/10] mm: don't pass "enum lru_list" to del_page_from_lru_list() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 06/10] mm: add __clear_page_lru_flags() to replace page_off_lru() Yu Zhao
2021-01-22 22:05 ` [PATCH v2 07/10] mm: VM_BUG_ON lru page flags Yu Zhao
2021-01-22 22:05 ` [PATCH v2 08/10] mm: fold page_lru_base_type() into its sole caller Yu Zhao
2021-01-22 22:05 ` [PATCH v2 09/10] mm: fold __update_lru_size() " Yu Zhao
2021-01-22 22:06 ` [PATCH v2 10/10] mm: make lruvec_lru_size() static Yu Zhao
2021-02-24 8:48 ` [PATCH] mm: test page->flags directly in page_lru() Yu Zhao
2021-02-24 13:15 ` Andrew Morton
2021-02-24 19:57 ` Yu Zhao
2021-02-24 21:56 ` Matthew Wilcox
2021-02-24 22:34 ` Yu Zhao
2021-02-24 22:48 ` Matthew Wilcox
2021-02-24 23:50 ` Yu Zhao
2021-02-25 3:55 ` Matthew Wilcox
2021-02-25 5:22 ` Yu Zhao
2021-02-25 12:12 ` Matthew Wilcox
2021-02-26 9:17 ` [PATCH v2 0/3] trim the uses of compound_head() Yu Zhao
2021-02-26 9:17 ` [PATCH v2 1/3] mm: bypass compound_head() for PF_NO_TAIL when enforce=1 Yu Zhao
2021-02-26 9:17 ` [PATCH v2 2/3] mm: use PF_NO_TAIL for PG_lru Yu Zhao
2021-02-26 20:22 ` Yu Zhao
2021-02-26 9:17 ` [PATCH v2 3/3] mm: use PF_ONLY_HEAD for PG_active and PG_unevictable Yu Zhao
2021-02-26 12:13 ` Matthew Wilcox
2021-02-26 19:49 ` Yu Zhao
2021-02-26 20:27 ` Matthew Wilcox
2021-03-01 11:50 ` Kirill A. Shutemov
2021-03-01 19:58 ` Yu Zhao
2021-03-01 20:16 ` Hugh Dickins
2021-03-01 20:26 ` Matthew Wilcox
2021-02-26 10:52 ` [PATCH v2 0/3] trim the uses of compound_head() Vlastimil Babka
2021-02-26 19:04 ` Yu Zhao
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