[PATCH 4/4 v2] mm: fix possible incorrect return value of move_pages() syscall

From: Joonsoo Kim
Date: Tue Jul 17 2012 - 08:35:02 EST

move_pages() syscall may return success in case that
do_move_page_to_node_array return positive value which means migration failed.
This patch changes return value of do_move_page_to_node_array
for not returning positive value. It can fix the problem.

Signed-off-by: Joonsoo Kim <js1304@xxxxxxxxx>
Cc: Brice Goglin <brice@xxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Minchan Kim <minchan@xxxxxxxxxx>

diff --git a/mm/migrate.c b/mm/migrate.c
index f495c58..eeaf409 100644
--- a/mm/migrate.c
+++ b/mm/migrate.c
@@ -1172,7 +1172,7 @@ set_status:

- return err;
+ return err > 0 ? -EBUSY : err;


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