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Subject[PATCH] block: Use RCU_INIT_POINTER(x, NULL) in blk-ioc.c
Date
This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL)

The rcu_assign_pointer() ensures that the initialization of a structure
is carried out before storing a pointer to that structure.
And in the case of the NULL pointer, there is no structure to initialize.
So, rcu_assign_pointer(p, NULL) can be safely converted to RCU_INIT_POINTER(p, NULL)

Signed-off-by: Monam Agarwal <monamagarwal123@gmail.com>
---
block/blk-ioc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/block/blk-ioc.c b/block/blk-ioc.c
index 242df01..6585186 100644
--- a/block/blk-ioc.c
+++ b/block/blk-ioc.c
@@ -69,7 +69,7 @@ static void ioc_destroy_icq(struct io_cq *icq)
* will. Hint assignment itself can race safely.
*/
if (rcu_dereference_raw(ioc->icq_hint) == icq)
- rcu_assign_pointer(ioc->icq_hint, NULL);
+ RCU_INIT_POINTER(ioc->icq_hint, NULL);

ioc_exit_icq(icq);

--
1.7.9.5


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