[PATCH 1/3] rculist: Fix list_entry_rcu to read ptr with rcu_dereference_raw

From: Patrick Marlier
Date: Tue Mar 24 2015 - 06:31:49 EST


Change to read effectively ptr with rcu_dereference_raw and not the
__ptr variable on the stack.

Signed-off-by: Patrick Marlier <patrick.marlier@xxxxxxxxx>
---
include/linux/rculist.h | 5 +----
1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/linux/rculist.h b/include/linux/rculist.h
index a18b16f..9d9baea 100644
--- a/include/linux/rculist.h
+++ b/include/linux/rculist.h
@@ -247,10 +247,7 @@ static inline void list_splice_init_rcu(struct list_head *list,
* primitives such as list_add_rcu() as long as it's guarded by rcu_read_lock().
*/
#define list_entry_rcu(ptr, type, member) \
-({ \
- typeof(*ptr) __rcu *__ptr = (typeof(*ptr) __rcu __force *)ptr; \
- container_of((typeof(ptr))rcu_dereference_raw(__ptr), type, member); \
-})
+ container_of((typeof(ptr))rcu_dereference_raw(ptr), type, member)

/**
* Where are list_empty_rcu() and list_first_entry_rcu()?
--
2.1.0

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