发布时间：2013-01-06 12:17:41

-->mkfs.c:main()           -->open_ctree()                    -->open_ctree_fs_info()                                __open_ct......【阅读全文】

发布时间：2013-01-06 12:16:24

Reference#define INLINE_EXTENT_BUFFER_PAGES 16#define MAX_INLINE_EXTENT_BUFFER_SIZE (INLINE_EXTENT_BUFFER_PAGES * PAGE_CACHE_SIZE)struct extent_buffer { u64 start;       //Indicates the start address of extent in RAM unsigned long len;  // The length of extent in RAM unsigne......【阅读全文】

发布时间：2013-01-06 12:07:27

ReferenceCode documention    **You need read  this link first.**Btrfs get/set funcIn btrfs_read_locked_inode(), we can see below codes:inode_item = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_inode_item);inode->i_mode = btrfs_inode_mode(leaf, inode_item......【阅读全文】

发布时间：2013-01-06 12:05:11

Reference为什么文件存储要选用B+树这样的数据结构？Pre-wordsIt has been 3 months for me after grduated from DLNU. Recently, I came to 帝都Beijing for hunting a KERNEL relating job. Leaking of projects experences makes  me unconfiendt. I made a determine that devote all my energies to submit a kernel patch. I rea......【阅读全文】

发布时间：2012-12-23 22:10:32

VFS的缩写是Virtual Filesystem Switch or Virtual file system.我觉得地一个比较实至名归。VFS在linux kernel当中是作为所有文件系统的抽象而存在的！他也是linux为什么能兼容众多fs的原因所在。结构Dentry是的，一直以来我都没有对dentry深入的理解。inode是目录和文件的统一抽象，可是VFS经常要执行diretory-specific operations, such as path name lookup. Path name lookup involves translating each component of a......【阅读全文】