Update bcachefs sources to 3ca08ab51ec9 bcachefs: six locks: Simplify optimistic spinning

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>

1 files changed, 11 insertions, 0 deletions

diff --git a/include/linux/list.h b/include/linux/list.h
index bdd09efa..d176d0d3 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -98,4 +98,15 @@ static inline void hlist_del_init(struct hlist_node *n)
 	     pos;							\
 	     pos = hlist_entry_safe((pos)->member.next, typeof(*(pos)), member))
 
+static inline size_t list_count_nodes(struct list_head *head)
+{
+	struct list_head *pos;
+	size_t count = 0;
+
+	list_for_each(pos, head)
+		count++;
+
+	return count;
+}
+
 #endif /* _LIST_LIST_H */