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List:       linux-btrfs
Subject:    [PATCH 1/3] rcustring: clean up botched __rcu annotations
From:       Omar Sandoval <osandov () osandov ! com>
Date:       2014-11-30 8:26:47
Message-ID: 7e64d06eeb464f70319ef85a19e3d7095fbdc2f8.1417335583.git.osandov () osandov ! com
[Download RAW message or body]

The rcu_string returned by rcu_string_strdup isn't technically under RCU yet,
and it makes more sense not to treat it as such. Additionally, an rcu_string
passed to rcu_string_free should already be rcu_dereferenced and therefore not
in the __rcu address space.

Signed-off-by: Omar Sandoval <osandov@osandov.com>
---
 include/linux/rcustring.h | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/include/linux/rcustring.h b/include/linux/rcustring.h
index 67277ab..28bd9bc 100644
--- a/include/linux/rcustring.h
+++ b/include/linux/rcustring.h
@@ -37,8 +37,7 @@ struct rcu_string {
  * @src: The string to copy
  * @flags: Flags for kmalloc
  */
-static inline struct rcu_string __rcu *rcu_string_strdup(const char *src,
-							 gfp_t flags)
+static inline struct rcu_string *rcu_string_strdup(const char *src, gfp_t flags)
 {
 	struct rcu_string *ret;
 	size_t len = strlen(src) + 1;
@@ -54,7 +53,7 @@ static inline struct rcu_string __rcu *rcu_string_strdup(const char *src,
  * rcu_string_free() - free an RCU string
  * @str: The string
  */
-static inline void rcu_string_free(struct rcu_string __rcu *str)
+static inline void rcu_string_free(struct rcu_string *str)
 {
 	if (str)
 		kfree_rcu(str, rcu);
-- 
2.1.3

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