linux-kernel - [PATCH 4/5] vmscan: get rid of unnecessary nr

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Date:	Wed, 22 Aug 2012 16:15:16 +0900
From:	Minchan Kim <minchan@...nel.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Mel Gorman <mgorman@...e.de>, Rik van Riel <riel@...hat.com>,
	Johannes Weiner <hannes@...xchg.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, Minchan Kim <minchan@...nel.org>
Subject: [PATCH 4/5] vmscan: get rid of unnecessary nr_dirty ret variable

Now anyone don't use nr_dirty so remove it.

Cc: Rik van Riel <riel@...hat.com>
Cc: Mel Gorman <mgorman@...e.de>
Signed-off-by: Minchan Kim <minchan@...nel.org>
---
 mm/vmscan.c |    6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 0e2550c..1a66680 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -674,7 +674,6 @@ static enum page_references page_check_references(struct page *page,
 static unsigned long shrink_page_list(struct list_head *page_list,
 				      struct zone *zone,
 				      struct scan_control *sc,
-				      unsigned long *ret_nr_dirty,
 				      unsigned long *ret_nr_writeback)
 {
 	LIST_HEAD(ret_pages);
@@ -955,7 +954,6 @@ keep:
 	list_splice(&ret_pages, page_list);
 	count_vm_events(PGACTIVATE, pgactivate);
 	mem_cgroup_uncharge_end();
-	*ret_nr_dirty += nr_dirty;
 	*ret_nr_writeback += nr_writeback;
 	return nr_reclaimed;
 }
@@ -1236,7 +1234,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
 	unsigned long nr_scanned;
 	unsigned long nr_reclaimed = 0;
 	unsigned long nr_taken;
-	unsigned long nr_dirty = 0;
 	unsigned long nr_writeback = 0;
 	isolate_mode_t isolate_mode = 0;
 	int file = is_file_lru(lru);
@@ -1278,8 +1275,7 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
 	if (nr_taken == 0)
 		return 0;
 
-	nr_reclaimed = shrink_page_list(&page_list, zone, sc,
-						&nr_dirty, &nr_writeback);
+	nr_reclaimed = shrink_page_list(&page_list, zone, sc, &nr_writeback);
 
 	spin_lock_irq(&zone->lru_lock);
 
-- 
1.7.9.5

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