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Date:   Fri, 1 Jun 2018 06:16:26 +0100
From:   Al Viro <viro@ZenIV.linux.org.uk>
To:     David Howells <dhowells@redhat.com>
Cc:     linux-fsdevel@vger.kernel.org, linux-afs@lists.infradead.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH 20/32] vfs: Make close() unmount the attached mount if so
 flagged [ver #8]
Message-ID: <20180601051625.GR30522@ZenIV.linux.org.uk>
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On Fri, Jun 01, 2018 at 04:18:29AM +0100, Al Viro wrote:

> +void umount_on_fput(struct vfsmount *mnt)
>  {

.... which needs to do mntput() in case if it's attached.