From f9004dbfff8a3fbbd7e2a88c8a4327c7f2f8e5b2 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Wed, 31 Jan 2024 01:04:47 +0000
Subject: [PATCH] add driver 5G
---
kernel/include/linux/list_bl.h | 26 ++++++++++++++++++++++++++
1 files changed, 26 insertions(+), 0 deletions(-)
diff --git a/kernel/include/linux/list_bl.h b/kernel/include/linux/list_bl.h
index 3fc2cc5..ae1b541 100644
--- a/kernel/include/linux/list_bl.h
+++ b/kernel/include/linux/list_bl.h
@@ -86,6 +86,32 @@
hlist_bl_set_first(h, n);
}
+static inline void hlist_bl_add_before(struct hlist_bl_node *n,
+ struct hlist_bl_node *next)
+{
+ struct hlist_bl_node **pprev = next->pprev;
+
+ n->pprev = pprev;
+ n->next = next;
+ next->pprev = &n->next;
+
+ /* pprev may be `first`, so be careful not to lose the lock bit */
+ WRITE_ONCE(*pprev,
+ (struct hlist_bl_node *)
+ ((uintptr_t)n | ((uintptr_t)*pprev & LIST_BL_LOCKMASK)));
+}
+
+static inline void hlist_bl_add_behind(struct hlist_bl_node *n,
+ struct hlist_bl_node *prev)
+{
+ n->next = prev->next;
+ n->pprev = &prev->next;
+ prev->next = n;
+
+ if (n->next)
+ n->next->pprev = &n->next;
+}
+
static inline void __hlist_bl_del(struct hlist_bl_node *n)
{
struct hlist_bl_node *next = n->next;
--
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