The patch titled
fix BUG_ON check at move_freepages()
has been added to the -mm tree. Its filename is
move-free-pages-between-lists-on-steal-fix-2.patch
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://www.zip.com.au/~akpm/linux/patches/stuff/added-to-mm.txt to find
out what to do about this
------------------------------------------------------
Subject: fix BUG_ON check at move_freepages()
From: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
The BUG_ON() check at move_freepages() is wrong. Its end_page is
start_page + MAX_ORDER_NR_PAGES. So, it can be next zone. BUG_ON() should
check "end_page - 1".
Signed-off-by: Yasunori Goto <y-goto@xxxxxxxxxxxxxx>
Cc: Mel Gorman <mel@xxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN mm/page_alloc.c~move-free-pages-between-lists-on-steal-fix-2 mm/page_alloc.c
--- a/mm/page_alloc.c~move-free-pages-between-lists-on-steal-fix-2
+++ a/mm/page_alloc.c
@@ -673,7 +673,7 @@ int move_freepages(struct zone *zone,
unsigned long order;
int blocks_moved = 0;
- BUG_ON(page_zone(start_page) != page_zone(end_page));
+ BUG_ON(page_zone(start_page) != page_zone(end_page - 1));
for (page = start_page; page < end_page;) {
if (!PageBuddy(page)) {
_
Patches currently in -mm which might be from y-goto@xxxxxxxxxxxxxx are
move-free-pages-between-lists-on-steal-fix-2.patch
-
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