一个简单文件系统的实现

dingning239

完全是看天书，一点都不懂，楼主能简洁地说一下gtfs在linux上的大概用途吗？与ext3的区别是什么

256893

赞！还没找到学linux的入口，想学文件系统

beyondfly

好文章，强烈支持

zhj1011

讲解的很好，学习了。      

licup123

内存inode和磁盘inode有什么联系，是如何映射的？
内存inode仅仅是访问提高访问速度吗？

代码中gt_inode ，struct gt_inode_info，vfs_inode这3个数据结构是怎么联系起来的

另外磁盘超级块数据结构为何又是这样定义：
struct  gt_sb_info{
        struct gt_super_block * s_gs;   ????
        struct buffer_head * s_sbh;
};
而内存的磁盘结构要这样定义
struct gt_inode_info{
       …………       
        truct inode vfs_inode; ？？？？？
};

小弟初学者，对这个很模糊对这几个数据结构的关系没摸清楚，请各位指教！

shenyanxxxy

应该把这个代码放到github上，维护起来才更有感觉。

beyondfly

楼主，我在2.6.36.65内核上编译错误，不知道是不是版本的问题？

fs/gt/dir.c: In function ‘gt_readdir’:
fs/gt/dir.c:72:2: error: implicit declaration of function ‘lock_kernel’ [-Werror=implicit-function-declaration]
fs/gt/dir.c:98:5: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
fs/gt/dir.c:111:2: error: implicit declaration of function ‘unlock_kernel’ [-Werror=implicit-function-declaration]
fs/gt/dir.c: In function ‘gt_add_link’:
fs/gt/dir.c:216:60: warning: passing argument 6 of ‘__gt_write_begin’ from incompatible pointer type [enabled by default]
In file included from fs/gt/dir.c:1:0:
fs/gt/gt.h:35:12: note: expected ‘struct page *’ but argument is of type ‘struct page **’
fs/gt/dir.c: In function ‘gt_delete_entry’:
fs/gt/dir.c:246:2: warning: passing argument 6 of ‘__gt_write_begin’ from incompatible pointer type [enabled by default]
In file included from fs/gt/dir.c:1:0:
fs/gt/gt.h:35:12: note: expected ‘struct page *’ but argument is of type ‘struct page **’
fs/gt/dir.c: In function ‘gt_make_empty’:
fs/gt/dir.c:328:69: warning: passing argument 6 of ‘__gt_write_begin’ from incompatible pointer type [enabled by default]
In file included from fs/gt/dir.c:1:0:
fs/gt/gt.h:35:12: note: expected ‘struct page *’ but argument is of type ‘struct page **’
fs/gt/dir.c:338:9: warning: ISO C90 forbids mixed declarations and code [-Wdeclaration-after-statement]
fs/gt/dir.c: In function ‘gt_set_link’:
fs/gt/dir.c:363:66: warning: passing argument 6 of ‘__gt_write_begin’ from incompatible pointer type [enabled by default]
In file included from fs/gt/dir.c:1:0:
fs/gt/gt.h:35:12: note: expected ‘struct page *’ but argument is of type ‘struct page **’
cc1: some warnings being treated as errors
make[2]: *** [fs/gt/dir.o] 错误 1
make[1]: *** [fs/gt] 错误 2
make: *** [fs] 错误 2

我爱你我的菜

来学习，谢谢