On Wed, Nov 21, 2012 at 02:21:51PM -0500, Dave Hansen wrote:
>
> This needs to make it in before 3.7 is released.
>
This is also required. Dave, can you double check? The surprise is that
this does not blow up very obviously.
---8<---
From: Mel Gorman <mgor...@suse.de>
Subject: [PATCH] mm: compaction: Fix return value of capture_free_page
Commit ef6c5be6 (fix incorrect NR_FREE_PAGES accounting (appears like
memory leak)) fixes a NR_FREE_PAGE accounting leak but missed the return
value which was also missed by this reviewer until today. That return value
is used by compaction when adding pages to a list of isolated free
pages and without this follow-up fix, there is a risk of free list
corruption.
Signed-off-by: Mel Gorman <mgor...@suse.de>
---
mm/page_alloc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index bcb72c6..8193809 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c
@@ -1422,7 +1422,7 @@ int capture_free_page(struct page *page, int alloc_order,
int migratetype)
}
}
- return 1UL << order;
+ return 1UL << alloc_order;
}
/*
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
