linux-kernel - [RFC] mm/swap: Rename pagevec_lru_move_fn() as pagevec_lruvec_move

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Message-Id: <20171019083314.12614-1-khandual@linux.vnet.ibm.com>
Date:   Thu, 19 Oct 2017 14:03:14 +0530
From:   Anshuman Khandual <khandual@...ux.vnet.ibm.com>
To:     linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: [RFC] mm/swap: Rename pagevec_lru_move_fn() as pagevec_lruvec_move_fn()

The function pagevec_lru_move_fn() actually moves pages from various
per cpu pagevecs into per node lruvecs with a custom function which
knows how to handle individual pages present in any given pagevec.
Because it does movement between pagevecs and lruvecs as whole not
to an individual list element, the name should reflect it.

Signed-off-by: Anshuman Khandual <khandual@...ux.vnet.ibm.com>
---
 mm/swap.c | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/mm/swap.c b/mm/swap.c
index a77d68f..fcd82bc 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -185,7 +185,7 @@ int get_kernel_page(unsigned long start, int write, struct page **pages)
 }
 EXPORT_SYMBOL_GPL(get_kernel_page);
 
-static void pagevec_lru_move_fn(struct pagevec *pvec,
+static void pagevec_lruvec_move_fn(struct pagevec *pvec,
 	void (*move_fn)(struct page *page, struct lruvec *lruvec, void *arg),
 	void *arg)
 {
@@ -235,7 +235,7 @@ static void pagevec_move_tail(struct pagevec *pvec)
 {
 	int pgmoved = 0;
 
-	pagevec_lru_move_fn(pvec, pagevec_move_tail_fn, &pgmoved);
+	pagevec_lruvec_move_fn(pvec, pagevec_move_tail_fn, &pgmoved);
 	__count_vm_events(PGROTATED, pgmoved);
 }
 
@@ -294,7 +294,7 @@ static void activate_page_drain(int cpu)
 	struct pagevec *pvec = &per_cpu(activate_page_pvecs, cpu);
 
 	if (pagevec_count(pvec))
-		pagevec_lru_move_fn(pvec, __activate_page, NULL);
+		pagevec_lruvec_move_fn(pvec, __activate_page, NULL);
 }
 
 static bool need_activate_page_drain(int cpu)
@@ -310,7 +310,7 @@ void activate_page(struct page *page)
 
 		get_page(page);
 		if (!pagevec_add(pvec, page) || PageCompound(page))
-			pagevec_lru_move_fn(pvec, __activate_page, NULL);
+			pagevec_lruvec_move_fn(pvec, __activate_page, NULL);
 		put_cpu_var(activate_page_pvecs);
 	}
 }
@@ -620,11 +620,11 @@ void lru_add_drain_cpu(int cpu)
 
 	pvec = &per_cpu(lru_deactivate_file_pvecs, cpu);
 	if (pagevec_count(pvec))
-		pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL);
+		pagevec_lruvec_move_fn(pvec, lru_deactivate_file_fn, NULL);
 
 	pvec = &per_cpu(lru_lazyfree_pvecs, cpu);
 	if (pagevec_count(pvec))
-		pagevec_lru_move_fn(pvec, lru_lazyfree_fn, NULL);
+		pagevec_lruvec_move_fn(pvec, lru_lazyfree_fn, NULL);
 
 	activate_page_drain(cpu);
 }
@@ -650,7 +650,8 @@ void deactivate_file_page(struct page *page)
 		struct pagevec *pvec = &get_cpu_var(lru_deactivate_file_pvecs);
 
 		if (!pagevec_add(pvec, page) || PageCompound(page))
-			pagevec_lru_move_fn(pvec, lru_deactivate_file_fn, NULL);
+			pagevec_lruvec_move_fn(pvec,
+					lru_deactivate_file_fn, NULL);
 		put_cpu_var(lru_deactivate_file_pvecs);
 	}
 }
@@ -670,7 +671,7 @@ void mark_page_lazyfree(struct page *page)
 
 		get_page(page);
 		if (!pagevec_add(pvec, page) || PageCompound(page))
-			pagevec_lru_move_fn(pvec, lru_lazyfree_fn, NULL);
+			pagevec_lruvec_move_fn(pvec, lru_lazyfree_fn, NULL);
 		put_cpu_var(lru_lazyfree_pvecs);
 	}
 }
@@ -901,7 +902,7 @@ static void __pagevec_lru_add_fn(struct page *page, struct lruvec *lruvec,
  */
 void __pagevec_lru_add(struct pagevec *pvec)
 {
-	pagevec_lru_move_fn(pvec, __pagevec_lru_add_fn, NULL);
+	pagevec_lruvec_move_fn(pvec, __pagevec_lru_add_fn, NULL);
 }
 EXPORT_SYMBOL(__pagevec_lru_add);
 
-- 
1.8.5.2