Messages in this thread Patch in this message | | | Date | Sun, 12 Mar 2023 14:41:14 -0000 | From | "tip-bot2 for Andrzej Hajda" <> | Subject | [tip: locking/core] llist: simplify __llist_del_all |
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The following commit has been merged into the locking/core branch of tip:
Commit-ID: ce27b24cbf7f62b74c4cbf807a06f42a14ccf981 Gitweb: https://git.kernel.org/tip/ce27b24cbf7f62b74c4cbf807a06f42a14ccf981 Author: Andrzej Hajda <andrzej.hajda@intel.com> AuthorDate: Wed, 18 Jan 2023 16:44:47 +01:00 Committer: Peter Zijlstra <peterz@infradead.org> CommitterDate: Sat, 11 Mar 2023 14:03:59 +01:00
llist: simplify __llist_del_all
llist_del_all uses xchg, let's use __xchg here.
Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com> Link: https://lore.kernel.org/r/20230118154450.73842-4-andrzej.hajda@intel.com --- include/linux/llist.h | 6 ++---- 1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/include/linux/llist.h b/include/linux/llist.h index 85bda2d..4dc1d18 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);
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