Re: Linux VFS architecture questions

["Randy.Dunlap" <rdunlap@xenotime.net>]

On Mon, 23 Jan 2006, Kyle Moffett wrote:

> 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!

This web page is terribly out of date, but you might find
a few helpful link on it (near the bottom):
  http://www.xenotime.net/linux/linux-fs.html

-- 
~Randy
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