lkml.org 
[lkml]   [2007]   [May]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [RFC PATCH] file as directory
On Wed, May 23, 2007 at 10:05:21AM +0200, Miklos Szeredi wrote:
> > Er... These mounts might not be propagated, but what about a bind
> > over another instance of such file in master tree?
>
> So your question is, which mount takes priority on the lookup? It
> probably should be the propagated real mount, rather than the
> dir-on-file one, shouldn't it?

There might be dragons in that area...

> > > I think they should be the same superblock, same dentry. What would
> > > be the advantage of doing otherwise?
> >
> > Then you are going to have interesting time with locking in final mntput().
>
> Final mntput of what?

When the last reference to your mount goes away.

> > BTW, what about having several links to the same file? You have i_mutex
> > on the inode, so serialization of those is not a problem, but...
>
> Sorry, I lost it...

Say /foo/bar/a is such a file.

cd /foo/bar
ln a b

now do lookups on a/ and b/

What happens?
-
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: 2007-05-23 10:31    [W:0.148 / U:0.060 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site