linux-kernel - [PATCH] lib/generic-radix-tree.c: remove unneeded _

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Message-Id: <20200621161745.55396-1-luc.vanoostenryck@gmail.com>
Date:   Sun, 21 Jun 2020 18:17:45 +0200
From:   Luc Van Oostenryck <luc.vanoostenryck@...il.com>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     Kent Overstreet <kent.overstreet@...il.com>,
        linux-kernel@...r.kernel.org,
        Luc Van Oostenryck <luc.vanoostenryck@...il.com>
Subject: [PATCH] lib/generic-radix-tree.c: remove unneeded __rcu

struct __genradix is defined as having its member 'root'
annotated as __rcu. But in the corresponding API RCU is not used.
Sparse reports this type mismatch as:
	lib/generic-radix-tree.c:56:35: warning: incorrect type in initializer (different address spaces)
	lib/generic-radix-tree.c:56:35:    expected struct genradix_root *r
	lib/generic-radix-tree.c:56:35:    got struct genradix_root [noderef] <asn:4> *__val
with 6 other ones.

So, correct root's type by removing this unneeded __rcu.

Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@...il.com>
---
 include/linux/generic-radix-tree.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/linux/generic-radix-tree.h b/include/linux/generic-radix-tree.h
index 02393c0c98f9..bfd00320c7f3 100644
--- a/include/linux/generic-radix-tree.h
+++ b/include/linux/generic-radix-tree.h
@@ -44,7 +44,7 @@
 struct genradix_root;
 
 struct __genradix {
-	struct genradix_root __rcu	*root;
+	struct genradix_root		*root;
 };
 
 /*
-- 
2.27.0