Linux-Kernel Archive: For help

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Dear sir:
I am very sorry to bother you. I'm a senior student=20
of Peking University in China.I am reading the source=20
code of Linux.I am the classmate of Zhangsu,a student has
asked you some questions about the Linux kernel. He told=20
me I could find help from you.Recently I have encountered=20
a lot difficulty in understanding its meaning.I wonder=20
if you ,sir, would like to reply my questions or give me=20
some instructs when you are free.Thank you very much for=20
your help.
These are my questions:
1. What is the meaning of "d_covers" domain in the=20
"dentry" struct?
2. What is the difference between an varible whose=20
type is "kdev_t" and another whose type is "dev_t"?
3. What is the effect of the "dquot" struct ? =20
4. What is the relations between "super_block","dev",
"dentry" and "inode"?Is a super_block=20
5. When the system runs at the end of the "start_kernel"=20
(in main.c)it starts a "init_task", what does this=20
task do and how?I know it's task_struct has been=20
filled, but I don't know where is its code (the=20
task_struct is too complex)
6. And how about the book "Linux Kernel Internals or=20
Inside the Linux Kernel"and what version of the=20
Linux does it talk about?
=20
Sincerel yours=20

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           = Dear sir:
     I am very = sorry to=20 bother you. I'm a senior student
of Peking University in China.I am = reading=20 the source
code of Linux.I am the classmate of Zhangsu,a student=20 has
asked you some questions about the Linux kernel. He told
me I = could=20 find help from you.Recently I have encountered
a lot difficulty in=20 understanding its meaning.I wonder
if you ,sir, would like to reply = my=20 questions or give me
some instructs when you are free.Thank you very = much=20 for
your help.
     These are my=20 questions:
     1. What is the meaning of=20 "d_covers" domain in the=20
        "dentry"=20 struct?
     2. What is the difference between an = varible=20 whose
        type is = "kdev_t"=20 and another whose type is = "dev_t"?
    =20 3. What is the effect of the "dquot" struct ? =20
     4. What is the relations between=20 "super_block","dev",
     = ;  =20 "dentry" and "inode"?Is a super_block=20
     5. When the system runs at the end of the=20 "start_kernel"
        = (in=20 main.c)it starts a "init_task", what does this=20
        task do and how?I know = it's=20 task_struct has been
        = filled, but=20 I don't know where is its code (the=20
        task_struct is too=20 complex)
     6. And how about the book = "Linux=20 Kernel Internals or
        = Inside the=20 Linux Kernel"and what version of the=20
        Linux does it talk=20 about?
          &nb= sp;           &nbs= p;            = ;      =20
Sincerel yours