Re: [RFC 12/26] ext2 white-out support

[Jan Blunck]

On Tue, Jul 31, Andreas Dilger wrote:

> On Jul 31, 2007  09:44 +0200, Jan Blunck wrote:
> > Ok, this is pretty similar to the way I implemented this for tmpfs. The
> > problem is that the union mount code is explicitly checking if the filesystem
> > is supporting whiteout. I used to use a new filesystem flag (FS_WHITEOUT) for
> > this but thought that disk filesystem like ext2/3/4 will have problem with
> > that if you mount an old image. So I guess I still need a feature flag.
> 
> You also need whiteout support for extents.  This could be done with
> unwritten extents potentially, or as I previously proposed (RFC) in
> linux-ext4.

Maybe. But this is about something totally different: a whiteout filetype, an
existing file that when it is found make the VFS return -ENOENT.

Cheers,
Jan
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/