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    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.

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