PM / Hibernate: Correct additional pages number 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@lge.com>
Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>

diff --git a/kernel/power/snapshot.c b/kernel/power/snapshot.c
index 1cf8890..6a768e5 100644 (file)
--- 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;
 }