linux-kernel - [RFC 01/14] llist: Move llist_{head,node} definition to types.h

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Date:   Tue, 25 Jan 2022 11:36:31 +0900
From:   Byungchul Park <byungchul.park@....com>
To:     torvalds@...ux-foundation.org, mingo@...hat.com,
        linux-kernel@...r.kernel.org
Cc:     peterz@...radead.org, will@...nel.org, tglx@...utronix.de,
        rostedt@...dmis.org, joel@...lfernandes.org, sashal@...nel.org,
        daniel.vetter@...ll.ch, chris@...is-wilson.co.uk,
        duyuyang@...il.com, johannes.berg@...el.com, tj@...nel.org,
        tytso@....edu, willy@...radead.org, david@...morbit.com,
        amir73il@...il.com, bfields@...ldses.org,
        gregkh@...uxfoundation.org, kernel-team@....com
Subject: [RFC 01/14] llist: Move llist_{head,node} definition to types.h

llist_head and llist_node can be used by very primitives. For example,
Dept for tracking dependency uses llist things in its header. To avoid
header dependency, move those to types.h.

Signed-off-by: Byungchul Park <byungchul.park@....com>
---
 include/linux/llist.h | 9 +--------
 include/linux/types.h | 8 ++++++++
 2 files changed, 9 insertions(+), 8 deletions(-)

diff --git a/include/linux/llist.h b/include/linux/llist.h
index 2e9c721..e0c88d5 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -50,14 +50,7 @@
 
 #include <linux/atomic.h>
 #include <linux/kernel.h>
-
-struct llist_head {
-	struct llist_node *first;
-};
-
-struct llist_node {
-	struct llist_node *next;
-};
+#include <linux/types.h>
 
 #define LLIST_HEAD_INIT(name)	{ NULL }
 #define LLIST_HEAD(name)	struct llist_head name = LLIST_HEAD_INIT(name)
diff --git a/include/linux/types.h b/include/linux/types.h
index a147977..0b058f5 100644
--- a/include/linux/types.h
+++ b/include/linux/types.h
@@ -187,6 +187,14 @@ struct hlist_node {
 	struct hlist_node *next, **pprev;
 };
 
+struct llist_head {
+	struct llist_node *first;
+};
+
+struct llist_node {
+	struct llist_node *next;
+};
+
 struct ustat {
 	__kernel_daddr_t	f_tfree;
 	__kernel_ino_t		f_tinode;
-- 
1.9.1