lkml.org 
[lkml]   [2005]   [May]   [13]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [ANNOUNCE] mini_fo-0.6.0 overlay file system
On Fri, 13 May 2005 07:26:14 -0400, Kyle Moffett wrote:
>
> >It solves the biggest concern I had left for union mount. Actually
> >implementing it, though, depends on quite a bit of infrastructure
> >that just
> >doesn't exist yet. Still, a very interesting idea.
>
> For ext2/ext3, the sparse-file-support _does_ exist, so the only
> major parts
> that need to be added are:
> o An extra ext2/ext3 flag that indicates nonresidence (For both
> sparse
> files, normal files, and directories).
> o VFS-level support for the union operation with hooks to let each
> filesystem do something special.

That and replacing the page cache by something different. Page cache
is referencing pages by inode,offset pairs. Having a potentially
infinite amount of inodes to look at, in order, may require a tiny bit
of patching. ;)

Jörn

--
Linux [...] existed just for discussion between people who wanted
to show off how geeky they were.
-- Rob Enderle
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-05-13 14:29    [W:0.045 / U:4.436 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site