[PATCH 1/9] ext4: Switch to kvfree_rcu() API

[Uladzislau Rezki (Sony)]

From: Uladzislau Rezki <uladzislau.rezki@xxxxxxxx>

Instead of invoking a synchronize_rcu() to free a pointer
after a grace period we can directly make use of new API
that does the same but in more efficient way.

CC: "Theodore Ts'o" <tytso@xxxxxxx>
Signed-off-by: Uladzislau Rezki <uladzislau.rezki@xxxxxxxx>
---
 fs/ext4/super.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4e33b5eca694..111b0498a232 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1886,8 +1886,7 @@ static int clear_qf_name(struct super_block *sb, int qtype)
 		return -1;
 	}
 	rcu_assign_pointer(sbi->s_qf_names[qtype], NULL);
-	synchronize_rcu();
-	kfree(old_qname);
+	kvfree_rcu(old_qname);
 	return 1;
 }
 #endif
-- 
2.30.2