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SubjectRe: Linux VFS architecture questions
Date
On Jan 23, 2006, at 12:00, Pekka Enberg wrote:
> Hi Kyle,
>
> On 1/23/06, Kyle Moffett <mrmacman_g4@mac.com> wrote:
>> Great! I'm trying to learn about filesystem design and
>> implementation, which is why I started writing my own hfsplus
>> filesystem (otherwise I would have just used the in-kernel one).
>> Do you have any recommended reading (either online or otherwise)
>> for someone trying to understand the kernel's VFS and blockdev
>> interfaces? I _think_ I understand the basics of buffer_head,
>> super_block, and have some idea of how to use aops, but it's tough
>> going trying to find out what functions to call to manage cached
>> disk blocks, or under what conditions the various VFS functions
>> are called. I'm trying to write up a "Linux Disk-Based Filesystem
>> Developers Guide" based on what I learn, but it's remarkably
>> sparse so far.
>
> Did you read Documentation/filesystems/vfs.txt?

Yeah, that was the first thing I looked at. Once I've got things
figured out, I'll probably submit a fairly hefty patch to that file
to add additional documentation.

> Also, books Linux Kernel Development and Understanding the Linux
> Kernel have fairly good information on VFS (and related) stuff.

Ah, thanks again! It looks like both of those are available through
my university's Safari/ProQuest subscription (http://
safari.oreilly.com/), so I'll take a look right away!

Cheers,
Kyle Moffett

--
I lost interest in "blade servers" when I found they didn't throw
knives at people who weren't supposed to be in your machine room.
-- Anthony de Boer


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