diff mbox series

[v5,4/7] llist: simplify __llist_del_all

Message ID 20230118154450.73842-4-andrzej.hajda@intel.com
State New
Headers
Series Introduce __xchg, non-atomic xchg |

Commit Message

Andrzej Hajda Jan. 18, 2023, 3:44 p.m. UTC 
  llist_del_all uses xchg, let's use __xchg here.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
---
 include/linux/llist.h | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

Comments

Andi Shyti Feb. 27, 2023, 9:55 a.m. UTC | #1 
Hi Andrzej,

On Wed, Jan 18, 2023 at 04:44:47PM +0100, Andrzej Hajda wrote:
> llist_del_all uses xchg, let's use __xchg here.
> 
> Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>

Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>

Thanks,
Andi
diff mbox series

Patch

diff --git a/include/linux/llist.h b/include/linux/llist.h
index 85bda2d02d65be..4dc1d185ea98ab 100644
--- a/include/linux/llist.h
+++ b/include/linux/llist.h
@@ -50,6 +50,7 @@ 
 
 #include <linux/atomic.h>
 #include <linux/container_of.h>
+#include <linux/non-atomic/xchg.h>
 #include <linux/stddef.h>
 #include <linux/types.h>
 
@@ -241,10 +242,7 @@  static inline struct llist_node *llist_del_all(struct llist_head *head)
 
 static inline struct llist_node *__llist_del_all(struct llist_head *head)
 {
-	struct llist_node *first = head->first;
-
-	head->first = NULL;
-	return first;
+	return __xchg(&head->first, NULL);
 }
 
 extern struct llist_node *llist_del_first(struct llist_head *head);