Re: Kernel patch to better support bind-mounts

[Lukas Kolbe <lukas@einfachkaffee.de>]

Hi Ian!

> Sure, but you'll need to give me a while to re-familiarize myself with
> the history and think about it for a while.

Of course. This patch was sitting here since before christmas and I only
now came around actually talking about it, so no stress with that :)

> > eclipse-3.1 \
> >   /bin          -rw,nosuid,grpid          fileserver:/volumes/vol1/eclipse-3.1/bin.linx86
> > eclipse \
> >   /bin          -rw,nosuid,grpid          :/vol/eclipse-3.1/bin
> 
> Mounts for these multiple offsets are triggered in the same way as
> direct mounts, they are triggered when autofs4_follow_link is called by
> the VFS.
> 
> > 
> > Accessing /vol/eclipse/bin now works flawlessly. But given this map:
> > 
> > jdk-1.5.13 -rw,nosuid,grpid fileserver:/export/stud/vol/jdk-1.5.13/linx86
> > jdk-1.5    -rw,nosuid,grpid :/vol/jdk-1.5.13
> 
> But these are indirect mounts and they are triggered by calling either
> autofs4_lookup or autofs4_revalidate and then indirectly
> try_to_fill_dentry, which is where you added the change I think.

Ok, thanks, then I understand a bit better what's actually happening
there.

> What kernel version is this patch against?

I tested it (IIRC) against 2.6.18 (from debian) and 2.6.23 (from
kernel.org git) - autofs-code doesn't seem to have changed much.

> Ian


-- 
Lukas