From b87f964c808842075194af371b048825fd687c24 Mon Sep 17 00:00:00 2001
From: Minchan Kim <minchan@kernel.org>
Date: Thu, 22 Oct 2015 09:03:48 +1100
Subject: [PATCH] mm: document deactivate_page

This patch adds function description for deactivate_page.

Signed-off-by: Minchan Kim <minchan@kernel.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Rik van Riel <riel@redhat.com>
Cc: Shaohua Li <shli@kernel.org>
Cc: Wang, Yalin <Yalin.Wang@sonymobile.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
 mm/swap.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/mm/swap.c b/mm/swap.c
index 0da29bb84cf0..0e306136f4a3 100644
--- a/mm/swap.c
+++ b/mm/swap.c
@@ -631,6 +631,13 @@ void deactivate_file_page(struct page *page)
 	}
 }
 
+/**
+ * deactivate_page - deactivate a page
+ * @page: page to deactivate
+ *
+ * This function moves @page to inactive list if @page was on active list and
+ * was not unevictable page to accelerate to reclaim @page.
+ */
 void deactivate_page(struct page *page)
 {
 	if (PageLRU(page) && PageActive(page) && !PageUnevictable(page)) {
-- 
2.39.5