linux-kernel - [PATCH] mm: vmscan: fix typo in isolating lru pages

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Date:	Thu, 29 Dec 2011 20:38:41 +0800
From:	Hillf Danton <dhillf@...il.com>
To:	linux-mm@...ck.org
Cc:	David Rientjes <rientjes@...gle.com>,
	Hugh Dickins <hughd@...gle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>,
	Michal Hocko <mhocko@...e.cz>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] mm: vmscan: fix typo in isolating lru pages

It is not the tag page but the cursor page that we should process, and it looks
a typo.

Signed-off-by: Hillf Danton <dhillf@...il.com>
Cc: Michal Hocko <mhocko@...e.cz>
Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@...fujitsu.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: David Rientjes <rientjes@...gle.com>
Cc: Hugh Dickins <hughd@...gle.com>
---

--- a/mm/vmscan.c	Thu Dec 29 20:20:16 2011
+++ b/mm/vmscan.c	Thu Dec 29 20:23:30 2011
@@ -1231,13 +1231,13 @@ static unsigned long isolate_lru_pages(u

 				mem_cgroup_lru_del(cursor_page);
 				list_move(&cursor_page->lru, dst);
-				isolated_pages = hpage_nr_pages(page);
+				isolated_pages = hpage_nr_pages(cursor_page);
 				nr_taken += isolated_pages;
 				nr_lumpy_taken += isolated_pages;
 				if (PageDirty(cursor_page))
 					nr_lumpy_dirty += isolated_pages;
 				scan++;
-				pfn += isolated_pages-1;
+				pfn += isolated_pages - 1;
 			} else {
 				/*
 				 * Check if the page is freed already.
--
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