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rcu: Convert ACCESS_ONCE() to READ_ONCE() and WRITE_ONCE()

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This commit moves from the old ACCESS_ONCE() API to the new READ_ONCE()
and WRITE_ONCE() APIs.

Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
[ paulmck:  Updated to include kernel/torture.c as suggested by Jason Low. ]
This commit is contained in:
Paul E. McKenney
2015-03-03 14:57:58 -08:00
parent 030bbdbf4c
commit 7d0ae8086b
10 changed files with 193 additions and 192 deletions
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6
include/linux/rculist.h
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@@ -29,8 +29,8 @@
*/
static inline void INIT_LIST_HEAD_RCU(struct list_head *list)
{
ACCESS_ONCE(list->next) = list;
ACCESS_ONCE(list->prev) = list;
WRITE_ONCE(list->next, list);
WRITE_ONCE(list->prev, list);
}
/*
@@ -288,7 +288,7 @@ static inline void list_splice_init_rcu(struct list_head *list,
#define list_first_or_null_rcu(ptr, type, member) \
({ \
struct list_head *__ptr = (ptr); \
struct list_head *__next = ACCESS_ONCE(__ptr->next); \
struct list_head *__next = READ_ONCE(__ptr->next); \
likely(__ptr != __next) ? list_entry_rcu(__next, type, member) : NULL; \
})