[PATCH 3/3] Add a pair of system calls to make extended file stats available [ver #2]

[David Howells]

Andreas Dilger <adilger at dilger.ca> wrote:

> Note that when ext4 is mounted with the "i_version" option that the
> i_version field is also updated on regular files, for use by NFSv4.  See,
> for example, ext4_mark_iloc_dirty().
> 
> I had a hard time finding this, even though I knew it was there somewhere,
> because it isn't modifying "i_version" directly, but rather calling a helper
> function inode_inc_iversion().

Ah, okay.  Thanks!

> It probably makes sense to always return i_version, unless it is 0.

I didn't want to return it if it wasn't supported on the nominated file as
that may give a false sense of coherency.

David