Thread (66 messages) 66 messages, 8 authors, 2010-10-29
STALE5727d

[PATCH 07/10] vmscan: Remove dead code in shrink_inactive_list()

From: Mel Gorman <hidden>
Date: 2010-09-06 10:47:30
Also in: linux-fsdevel, lkml
Subsystem: memory management, memory management - mglru (multi-gen lru), memory management - reclaim, the rest · Maintainers: Andrew Morton, Johannes Weiner, Linus Torvalds

From: KOSAKI Motohiro <redacted>

After synchrounous lumpy reclaim, the page_list is guaranteed to not
have active pages as page activation in shrink_page_list() disables lumpy
reclaim. Remove the dead code.

Signed-off-by: KOSAKI Motohiro <redacted>
Signed-off-by: Mel Gorman <redacted>
---
 mm/vmscan.c |    8 --------
 1 files changed, 0 insertions(+), 8 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 21d1153..64f9ca5 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1334,7 +1334,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct zone *zone,
 	unsigned long nr_scanned;
 	unsigned long nr_reclaimed = 0;
 	unsigned long nr_taken;
-	unsigned long nr_active;
 	unsigned long nr_anon;
 	unsigned long nr_file;
 
@@ -1389,13 +1388,6 @@ shrink_inactive_list(unsigned long nr_to_scan, struct zone *zone,
 
 	/* Check if we should syncronously wait for writeback */
 	if (should_reclaim_stall(nr_taken, nr_reclaimed, priority, sc)) {
-		/*
-		 * The attempt at page out may have made some
-		 * of the pages active, mark them inactive again.
-		 */
-		nr_active = clear_active_flags(&page_list, NULL);
-		count_vm_events(PGDEACTIVATE, nr_active);
-
 		set_lumpy_reclaim_mode(priority, sc, true);
 		nr_reclaimed += shrink_page_list(&page_list, sc);
 	}
-- 
1.7.1

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