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From:   Alex Shi <alex.shi@linux.alibaba.com>
To:     akpm@linux-foundation.org, mgorman@techsingularity.net,
        tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru,
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Subject: [PATCH v14 10/20] mm/lru: move lru_lock holding in func lru_note_cost_page
Date:   Fri,  3 Jul 2020 13:07:43 +0800
Message-Id: <1593752873-4493-11-git-send-email-alex.shi@linux.alibaba.com>
In-Reply-To: <1593752873-4493-1-git-send-email-alex.shi@linux.alibaba.com>
References: <1593752873-4493-1-git-send-email-alex.shi@linux.alibaba.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

It's a clean up patch w/o function changes.

Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
---
 mm/memory.c     | 3 ---
 mm/swap.c       | 2 ++
 mm/swap_state.c | 2 --
 mm/workingset.c | 2 --
 4 files changed, 2 insertions(+), 7 deletions(-)

diff --git a/mm/memory.c b/mm/memory.c
index 87ec87cdc1ff..dafc5585517e 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -3150,10 +3150,7 @@ vm_fault_t do_swap_page(struct vm_fault *vmf)
 				 * XXX: Move to lru_cache_add() when it
 				 * supports new vs putback
 				 */
-				spin_lock_irq(&page_pgdat(page)->lru_lock);
 				lru_note_cost_page(page);
-				spin_unlock_irq(&page_pgdat(page)->lru_lock);
-
 				lru_cache_add(page);
 				swap_readpage(page, true);
 			}
diff --git a/mm/swap.c b/mm/swap.c
index dc8b02cdddcb..b88ca630db70 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -298,8 +298,10 @@ void lru_note_cost(struct lruvec *lruvec, bool file, unsigned int nr_pages)
 
 void lru_note_cost_page(struct page *page)
 {
+	spin_lock_irq(&page_pgdat(page)->lru_lock);
 	lru_note_cost(mem_cgroup_page_lruvec(page, page_pgdat(page)),
 		      page_is_file_lru(page), hpage_nr_pages(page));
+	spin_unlock_irq(&page_pgdat(page)->lru_lock);
 }
 
 static void __activate_page(struct page *page, struct lruvec *lruvec)
diff --git a/mm/swap_state.c b/mm/swap_state.c
index 05889e8e3c97..080be52db6a8 100644
--- a/mm/swap_state.c
+++ b/mm/swap_state.c
@@ -440,9 +440,7 @@ struct page *__read_swap_cache_async(swp_entry_t entry, gfp_t gfp_mask,
 	}
 
 	/* XXX: Move to lru_cache_add() when it supports new vs putback */
-	spin_lock_irq(&page_pgdat(page)->lru_lock);
 	lru_note_cost_page(page);
-	spin_unlock_irq(&page_pgdat(page)->lru_lock);
 
 	/* Caller will initiate read into locked page */
 	SetPageWorkingset(page);
diff --git a/mm/workingset.c b/mm/workingset.c
index 50b7937bab32..337d5b9ad132 100644
--- a/mm/workingset.c
+++ b/mm/workingset.c
@@ -372,9 +372,7 @@ void workingset_refault(struct page *page, void *shadow)
 	if (workingset) {
 		SetPageWorkingset(page);
 		/* XXX: Move to lru_cache_add() when it supports new vs putback */
-		spin_lock_irq(&page_pgdat(page)->lru_lock);
 		lru_note_cost_page(page);
-		spin_unlock_irq(&page_pgdat(page)->lru_lock);
 		inc_lruvec_state(lruvec, WORKINGSET_RESTORE);
 	}
 out:
-- 
1.8.3.1