bd_mnt            848 fs/block_dev.c 	static struct vfsmount *bd_mnt;
bd_mnt            857 fs/block_dev.c 	bd_mnt = kern_mount(&bd_type);
bd_mnt            858 fs/block_dev.c 	if (IS_ERR(bd_mnt))
bd_mnt            860 fs/block_dev.c 	blockdev_superblock = bd_mnt->mnt_sb;   /* For writeback */