Node_zones type of the nodes zone, generally include ZONE_HIGHMEM, ZONE_NORMAL and three Node_zonelists ZONE_DMA zone memory allocation of the sort. It is free_area_init_core build_zonelists set by page_alloc.c zone in order nr_zones zone of the node number, from 1 to 3, but not all nodes need to have three zonenode_mem_map It is the first struct page array page, the array that each physical node in the frame. According to the node order in the system, it can mem_map in the global array is used to describe a bit Valid_addr_bitmap empty node memory bitmap, node_start_paddr the physical address of the starting node. node_start_mapnr mem_map given the page in the global offset calculation in free_area_init_core lmem_map mem_map and the node between the number of frames, node_size frame within the zone number, node_id of the node ID, system-wide node ID starting from 0. All nodes in the system maintains the list in pgdat_list in init_bootmem_core function to complete the list of initialization. In the small heterogeneous networks, many users choose Linux as network operating system, using its simple configuration and user interface provides a familiar graphical Internet service, FTP is one of the services it provides. In many network applications, FTP has a very important position. Internet is a very important resource for software resources, and a variety of software resources, most of them on the FTP server. As with most Internet services, FTP is a client / server systems.
If consider the use of Apples Boot Camp beta version of the Macintosh computer set the Windows partition, you must pay close attention to this test version of the software license with the conditions, otherwise there may be trouble. Information on the Apple website, only in the September 30 launch of commercial release, users only need to license Boot Camp software. Since April 2006 public beta version released, Boot Camp makes Intel-based Mac users to create a separate Windows partition, boot Windows or the Mac OS partition. Last month, Apple updated the software, adding support for Windows Vista. Apple also said it will next generation, code-named Leopard, Mac OS, the official version of Boot Camp integration software. Apple has not announced whether it will release the final version of Tiger users of Boot Camp, there have been rumors that Apple will release payment of the Tiger version of Boot Camp. However, Apple said, the use of + version users do not establish a Windows partition can not use the Windows partition, but in terms of functionality and performance will have certain restrictions.