linux-kernel - [PATCH] PM / Hibernate: use rb_entry instead of container

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Message-Id: <c479dd32fab44ad1cda6dc4f2e0d70e617608afe.1482159675.git.geliangtang@gmail.com>
Date:   Mon, 19 Dec 2016 23:03:11 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Pavel Machek <pavel@....cz>, Len Brown <len.brown@...el.com>
Cc:     Geliang Tang <geliangtang@...il.com>, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] PM / Hibernate: use rb_entry instead of container_of

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

Signed-off-by: Geliang Tang <geliangtang@...il.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