linux-kernel - [PATCH] proc: use rb

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Message-Id: <4fd1f82818665705ce75c5156a060ae7caa8e0a9.1482160150.git.geliangtang@gmail.com>
Date:   Mon, 19 Dec 2016 23:11:12 +0800
From:   Geliang Tang <geliangtang@...il.com>
To:     Jan Kara <jack@...e.cz>, Al Viro <viro@...iv.linux.org.uk>,
        "David S. Miller" <davem@...emloft.net>,
        Juergen Gross <jgross@...e.com>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Seth Forshee <seth.forshee@...onical.com>
Cc:     Geliang Tang <geliangtang@...il.com>, linux-kernel@...r.kernel.org
Subject: [PATCH] proc: use rb_entry()

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

Signed-off-by: Geliang Tang <geliangtang@...il.com>
---
 fs/proc/generic.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 7eb3cef..f842650 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -57,9 +57,9 @@ static struct proc_dir_entry *pde_subdir_find(struct proc_dir_entry *dir,
 	struct rb_node *node = dir->subdir.rb_node;
 
 	while (node) {
-		struct proc_dir_entry *de = container_of(node,
-							 struct proc_dir_entry,
-							 subdir_node);
+		struct proc_dir_entry *de = rb_entry(node,
+						     struct proc_dir_entry,
+						     subdir_node);
 		int result = proc_match(len, name, de);
 
 		if (result < 0)
@@ -80,8 +80,9 @@ static bool pde_subdir_insert(struct proc_dir_entry *dir,
 
 	/* Figure out where to put new node */
 	while (*new) {
-		struct proc_dir_entry *this =
-			container_of(*new, struct proc_dir_entry, subdir_node);
+		struct proc_dir_entry *this = rb_entry(*new,
+						       struct proc_dir_entry,
+						       subdir_node);
 		int result = proc_match(de->namelen, de->name, this);
 
 		parent = *new;
-- 
2.9.3