On Tue, Mar 27, 2012 at 11:31 PM, Dong Zhu <bluezhudong(a)gmail.com> wrote:
My name is Dong Zhu from Dalian,China.I am a intern working in
Redhat.I am interested in this idea
Glad that you are interested :)
The following information is my Proposal of this idea,Could help
reviewing it ? Any comments are appreciated.
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Application for Google Summer of Code 2012: Dong Zhu
Email Address: bluezhudong(a)gmail.com
(minor) you need to add your country code which I believe is
Blog URL: http://bluezd.info
Freenode IRC Nick: bluezd
Why do you want to work with the Fedora Project?
First: I am a fedora user,I use the fedora 15 as my Desktop os now.
Second: The Fedora Project is a worldwide community,I am eager to
participate it and make contribute for it.
Third: I have great interesting in opensource,especially Fedora Project.
Do you have any past involvement with the Fedora project or another open
source project as a contributor?
I am intern working in Redhat as a kernel-qe for almost one year,I
test/report many bugs and write a large number of automatic testcases on
RHEL.On the other hand I also read the kernel source code,then write
some related patch to test the kernel.
Did you participate with the past GSoC programs, if so which years,
Will you continue contributing/ supporting the Fedora project after the
GSoC 2012 program, if yes, which team(s), you are interested with?
Yes,Of course.I am crazy interested in Linux
kernel,filesystem,Power-Management,Timer,Interrupt,I am looking forward
to submit patch to the fedora-devel. I think I can contribute to fedora
project according to my knowledge.
Why should we choose you over other applicants?
I have knowledge of Linux and the linux kernel.I am familiar with
I have experience analyzing and debugging Linux kernel source code,I can
write some related kernel module by myself.
I experience working in OpenSource.
I will implement the writeback mechanism for nfs during the summer,I
will spend 8 hours a day to work for my project at least.
I am a student from DaLian,China(timezone:GMT+8),23 years old,I am crazy
about the OpenSource especially the Linux kernel.
NFS only supports write through cache based on fscache/cachefiles,the
goal is adding a new feature that implement a writeback mechanism for
Profit for writeback mechanism
Add a new feature of the fscache,Meet the needs of different people,can
satisfy the requrements from different people,and the customer will
benefit from it.
This is not just about fscache. It requires nfs, fscache and
cachefiles to work together to make it happen.
I am good at C/shell Programming and familiar with the Linux kernel/nfs.
I worked for redhat for almost one year and write many testcases(C &&
shell),I have experience working for OpenSource.
I am familiar with extX filesystems and know the implementation of it by
reading the source code.So I am very familiar with the mechanism of
cache (indoe cache,dentry cache,address_space).I also have the
experiecnce of developering the kernel module.
1.First I think I need to read the fscache source code and familiar with
the fscache APIs,such as fscache_read_or_alloc_page,To figure out the
implementation of the nfs make use of the FS-cache facilities.
2.Then investigate nfs fscache and cachefiles implementation and a
knowledge of write through.
3.At last modify the fscache and cachefiles modules to add some
necessary APIs to implement the write back without breaking the NFS
specific close-to-open semantics.
Again, all three modules nfs/fscache/cachefiles
need to be modified to
support writeback caching. And I hope you can divide step 3 into
smaller and clearer steps.
1. Publish my goals to the community and try to get some feedback and
suggestions on my plans. Then I will get familiar with
nfs->fscachethe->cachefiles that I require for my work. (maybe until
2. Discuss with the community and the mentor about the write back and
implement it.(until July)
The first two steps seem to be too long... Hope you can
so that you leave enough time for coding.
3. Implement the writeback mechanism. (Before August)
one month is too short for coding. And I'd prefer if you can
give some general idea of how you are going to implement the project.
No need to be too specific but some general ideas and measurable steps
(and yeah, general ideas and measurable steps should be the main
content of your proposal.)
4. Finish developing and re-compile the related of nfs kernel module
(nfs,fscache,cacahefiles),test it and check whether it works well.
Besides above, documentation is also important for GSoC projects. You
can write down your learning experience, design etc., to help others
review and use the code.
Mentor : Tao Peng