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Date: Sat, 22 Mar 2014 12:33:58 +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-cgroup.c This patch replaces rcu_assign_pointer(x, NULL) with RCU_INIT_POINTER(x, NULL) Since rcu_assign_pointer() is to ensure that the initialization of a structure is carried out before storing a pointer to that structure. 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-cgroup.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 4e491d9..fc62c47 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -337,7 +337,7 @@ static void blkg_destroy(struct blkcg_gq *blkg) * will. Hint assignment itself can race safely. */ if (rcu_dereference_raw(blkcg->blkg_hint) == blkg) - rcu_assign_pointer(blkcg->blkg_hint, NULL); + RCU_INIT_POINTER(blkcg->blkg_hint, NULL); /* * If root blkg is destroyed. Just clear the pointer since root_rl -- 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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