From: Miklos Szeredi Date: Thu, 20 Nov 2014 15:40:01 +0000 (+0100) Subject: ovl: use lockless_dereference() for upperdentry X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=71d509280f7e92eb60ae6b7c78c20afafff060c7;p=linux-beck.git ovl: use lockless_dereference() for upperdentry Don't open code lockless_dereference() in ovl_upperdentry_dereference(). Signed-off-by: Miklos Szeredi --- diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c index eee7a62e1c0e..f16d318b71f8 100644 --- a/fs/overlayfs/super.c +++ b/fs/overlayfs/super.c @@ -84,12 +84,7 @@ enum ovl_path_type ovl_path_type(struct dentry *dentry) static struct dentry *ovl_upperdentry_dereference(struct ovl_entry *oe) { - struct dentry *upperdentry = ACCESS_ONCE(oe->__upperdentry); - /* - * Make sure to order reads to upperdentry wrt ovl_dentry_update() - */ - smp_read_barrier_depends(); - return upperdentry; + return lockless_dereference(oe->__upperdentry); } void ovl_path_upper(struct dentry *dentry, struct path *path)