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Date: Wed,  3 Jan 2024 10:02:38 +0100
From: Pierre Gondois <pierre.gondois@....com>
To: linux-kernel@...r.kernel.org
Cc: Pierre Gondois <pierre.gondois@....com>,
	Marco Elver <elver@...gle.com>,
	Kees Cook <keescook@...omium.org>,
	Lucas De Marchi <lucas.demarchi@...el.com>,
	Jani Nikula <jani.nikula@...el.com>,
	Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
	Ingo Molnar <mingo@...nel.org>
Subject: [PATCH] list: Add hlist_count_nodes()

Add a function to count nodes in a hlist. hlist_count_nodes()
is similar to list_count_nodes().

Signed-off-by: Pierre Gondois <pierre.gondois@....com>
---
 include/linux/list.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/include/linux/list.h b/include/linux/list.h
index 1837caedf723..0f1b1d4a2e2e 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -1175,4 +1175,19 @@ static inline void hlist_move_list(struct hlist_head *old,
 	     pos && ({ n = pos->member.next; 1; });			\
 	     pos = hlist_entry_safe(n, typeof(*pos), member))
 
+/**
+ * hlist_count_nodes - count nodes in the hlist
+ * @head:	the head for your hlist.
+ */
+static inline size_t hlist_count_nodes(struct hlist_head *head)
+{
+	struct hlist_node *pos;
+	size_t count = 0;
+
+	hlist_for_each(pos, head)
+		count++;
+
+	return count;
+}
+
 #endif
-- 
2.25.1


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