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Message-Id: <1395520154-2815-1-git-send-email-monamagarwal123@gmail.com> Date: Sun, 23 Mar 2014 01:59:14 +0530 From: Monam Agarwal <monamagarwal123@...il.com> To: axboe@...nel.dk, linux-kernel@...r.kernel.org Subject: [PATCH] block: Use RCU_INIT_POINTER(x, NULL) in blk-ioc.c 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@...il.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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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