From: Rafael J. Wysocki <rjw@sisk.pl>
Date: Thu, 5 Apr 2007 02:08:21 +0000 (-0700)
Subject: [PATCH] swsusp: fix memory shrinker
X-Git-Tag: v2.6.21-rc6~9
X-Git-Url: https://openfabrics.org/gitweb/?a=commitdiff_plain;h=c75fd0ee6e1750e6e527ed1d4aeee66739d9ad79;p=~shefty%2Frdma-dev.git

[PATCH] swsusp: fix memory shrinker

Fix a bug in the swsusp's memory shrinker that causes some systems using
highmem to refuse to suspend to disk if image_size is set above 1/2 of
available RAM.

Special thanks to Jiri Slaby for reporting the problem and assistance in
debugging it.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Cc: Jiri Slaby <jirislaby@gmail.com>
Cc: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/kernel/power/swsusp.c b/kernel/power/swsusp.c
index 7fb834397a0..175370824f3 100644
--- a/kernel/power/swsusp.c
+++ b/kernel/power/swsusp.c
@@ -229,13 +229,13 @@ int swsusp_shrink_memory(void)
 		size += highmem_size;
 		for_each_zone (zone)
 			if (populated_zone(zone)) {
+				tmp += snapshot_additional_pages(zone);
 				if (is_highmem(zone)) {
 					highmem_size -=
 					zone_page_state(zone, NR_FREE_PAGES);
 				} else {
 					tmp -= zone_page_state(zone, NR_FREE_PAGES);
 					tmp += zone->lowmem_reserve[ZONE_NORMAL];
-					tmp += snapshot_additional_pages(zone);
 				}
 			}