[PATCH] PM / Hibernate: use rb_entry instead of container_of

[Geliang Tang]

To make the code clearer, use rb_entry() instead of container_of() to
deal with rbtree.

Signed-off-by: Geliang Tang <geliangt...@gmail.com>
---
 kernel/power/swap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/power/swap.c b/kernel/power/swap.c
index 32e0c23..f80fd33 100644
--- a/kernel/power/swap.c
+++ b/kernel/power/swap.c
@@ -201,7 +201,7 @@ void free_all_swap_pages(int swap)
                struct swsusp_extent *ext;
                unsigned long offset;
 
-               ext = container_of(node, struct swsusp_extent, node);
+               ext = rb_entry(node, struct swsusp_extent, node);
                rb_erase(node, &swsusp_extents);
                for (offset = ext->start; offset <= ext->end; offset++)
                        swap_free(swp_entry(swap, offset));
-- 
2.9.3