list.h: new helper - hlist_add_fake()
Make node look as if it was on hlist, with hlist_del()
working correctly. Usable without any locking...
Convert a couple of places where we want to do that to
inode->i_hash.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/include/linux/list.h b/include/linux/list.h
index 88a0006..9a5f8a7 100644
--- a/include/linux/list.h
+++ b/include/linux/list.h
@@ -636,6 +636,12 @@
next->next->pprev = &next->next;
}
+/* after that we'll appear to be on some hlist and hlist_del will work */
+static inline void hlist_add_fake(struct hlist_node *n)
+{
+ n->pprev = &n->next;
+}
+
/*
* Move a list from one list head to another. Fixup the pprev
* reference of the first entry if it exists.