From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andrew Morton <akpm@osdl.org>
Subject: Re: [PATCH 3/7] FS-Cache: Avoid ENFILE checking for kernel-specific
 open files
Date: Thu, 20 Apr 2006 17:11:18 -0700
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To: David Howells <dhowells@redhat.com>
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David Howells <dhowells@redhat.com> wrote:
>
>   (1) Each AFS or NFS _dentry_ retained in the system pins a file in the
>       backing cache if it's also cached, whether or not it's open.

That would seem to be a great shortcoming in fscache.

I guess as memory reclaim reaps the top-level dentries those file*'s will
also be freed up, leading to their dentries becoming reclaimable, leading
to their inodes being reclaimable.

But still.  Is it not possible to release those files-pinned-by-dcache when
the top-level files are closed?