linux-kernel - [PATCH] PM / Hibernate: Correct additional page calculation

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Date:	Tue, 17 Jan 2012 11:43:09 +0900
From:	Namhyung Kim <namhyung.kim@....com>
To:	"Rafael J. Wysocki" <rjw@...k.pl>
Cc:	Namhyung Kim <namhyung@...il.com>, Pavel Machek <pavel@....cz>,
	Len Brown <len.brown@...el.com>, linux-pm@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH] PM / Hibernate: Correct additional page calculation

The struct bm_block is allocated by chain_alloc(),
so it'd better counting it in LINKED_PAGE_DATA_SIZE.

Signed-off-by: Namhyung Kim <namhyung.kim@....com>
---
 kernel/power/snapshot.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index cbe2c1441392..7196d3c023e1 100644
--- a/kernel/power/snapshot.c
+++ b/kernel/power/snapshot.c
@@ -812,7 +812,8 @@ unsigned int snapshot_additional_pages(struct zone *zone)
 	unsigned int res;
 
 	res = DIV_ROUND_UP(zone->spanned_pages, BM_BITS_PER_BLOCK);
-	res += DIV_ROUND_UP(res * sizeof(struct bm_block), PAGE_SIZE);
+	res += DIV_ROUND_UP(res * sizeof(struct bm_block),
+			    LINKED_PAGE_DATA_SIZE);
 	return 2 * res;
 }
 
-- 
1.7.9.rc1.dirty

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