linux-kernel - [PATCH] block: partition: use RCU_INIT

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Date:	Thu,  5 May 2016 23:24:06 +0530
From:	Muhammad Falak R Wani <falakreyaz@...il.com>
To:	Jens Axboe <axboe@...nel.dk>
Cc:	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] block: partition: use RCU_INIT_POINTER() for NULLing.

It is safe to use RCU_INIT_POINTER() to NULL, instead of
rcu_assign_pointer().
This results in slightly smaller/faster code.

Signed-off-by: Muhammad Falak R Wani <falakreyaz@...il.com>
---
 block/partition-generic.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/partition-generic.c b/block/partition-generic.c
index 2c6ae2a..e5219d5 100644
--- a/block/partition-generic.c
+++ b/block/partition-generic.c
@@ -262,8 +262,8 @@ void delete_partition(struct gendisk *disk, int partno)
 	if (!part)
 		return;

-	rcu_assign_pointer(ptbl->part[partno], NULL);
-	rcu_assign_pointer(ptbl->last_lookup, NULL);
+	RCU_INIT_POINTER(ptbl->part[partno], NULL);
+	RCU_INIT_POINTER(ptbl->last_lookup, NULL);
 	kobject_put(part->holder_dir);
 	device_del(part_to_dev(part));

-- 
1.9.1