SB_UNFROZEN       240 fs/buffer.c    		sb->s_frozen = SB_UNFROZEN;
SB_UNFROZEN      1536 fs/xfs/linux-2.6/xfs_ioctl.c 		if (inode->i_sb->s_frozen == SB_UNFROZEN)
SB_UNFROZEN      1543 fs/xfs/linux-2.6/xfs_ioctl.c 		if (inode->i_sb->s_frozen != SB_UNFROZEN)