lkml.org 
[lkml]   [2004]   [Oct]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [PATCH 13/28] VFS: Introduce soft reference counts
On Mon, Oct 25, 2004 at 10:45:03AM -0400, Mike Waychison wrote:
> This patch introduces the concept of a 'soft' reference count for a vfsmount.
> This type of reference count allows for references to be held on mountpoints
> that do not affect their busy states for userland unmounting. Some might
> argue that this is wrong because 'when I unmount a filesystem, I want the
> resources associated with it to go away too', but this way of thinking was
> deprecated with the addition of namespaces and --bind back in the 2.4 series.
>
> A future addition may see a callback mechanism so that in kernel users can
> use a given mountpoint and have it deregistered some way (quota and
> accounting come to mind).
>
> These soft reference counts are used by a later patch that adds an interface
> for holding and manipulating mountpoints using filedescriptors.

You haven't explained why you actually need it, though.

-
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: 2005-03-22 14:07    [W:0.063 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site