X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;f=fs%2Fsysfs%2Fmount.c;h=3eaf5c6622eb4fafc82137bc501aac803d7952f4;hb=e1aa17c7b52c2cc1a4c20f62deadcd94ce8b632c;hp=6211230814fd89dcc1a0a4b0acbabe000428e5b8;hpb=9df5a9b02fb59a4148bc93e0d20731c72aaffa5f;p=~andy%2Flinux

diff --git a/fs/sysfs/mount.c b/fs/sysfs/mount.c
index 6211230814f..3eaf5c6622e 100644
--- a/fs/sysfs/mount.c
+++ b/fs/sysfs/mount.c
@@ -27,6 +27,7 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
 {
 	struct dentry *root;
 	void *ns;
+	bool new_sb;
 
 	if (!(flags & MS_KERNMOUNT)) {
 		if (!capable(CAP_SYS_ADMIN) && !fs_fully_visible(fs_type))
@@ -37,8 +38,8 @@ static struct dentry *sysfs_mount(struct file_system_type *fs_type,
 	}
 
 	ns = kobj_ns_grab_current(KOBJ_NS_TYPE_NET);
-	root = kernfs_mount_ns(fs_type, flags, sysfs_root, ns);
-	if (IS_ERR(root))
+	root = kernfs_mount_ns(fs_type, flags, sysfs_root, &new_sb, ns);
+	if (IS_ERR(root) || !new_sb)
 		kobj_ns_drop(KOBJ_NS_TYPE_NET, ns);
 	return root;
 }