[PATCH] mm: vmscan: no change of reclaim mode if unevictable page encountered

[Hillf Danton]

Since unevictable page is not isolated from lru list for shrink_page_list(),
it is accident if encountered in shrinking, and no need to change reclaim mode.

Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx>
Cc: David Rientjes <rientjes@xxxxxxxxxx>
Cc: Mel Gorman <mgorman@xxxxxxx>
Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Hillf Danton <dhillf@xxxxxxxxx>
---

--- a/mm/vmscan.c	Thu Dec 29 20:20:16 2011
+++ b/mm/vmscan.c	Sat Jan  7 11:27:44 2012
@@ -995,7 +995,6 @@ cull_mlocked:
 			try_to_free_swap(page);
 		unlock_page(page);
 		putback_lru_page(page);
-		reset_reclaim_mode(sc);
 		continue;

 activate_locked:
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