From 5556e7e6d30e8e9b5ee51b0e5edd526ee80e5e36 Mon Sep 17 00:00:00 2001
From: Tyler Hicks <tyhicks@canonical.com>
Date: Wed, 5 Aug 2015 11:26:36 -0500
Subject: [PATCH] eCryptfs: Invalidate dcache entries when lower i_nlink is
 zero

Consider eCryptfs dcache entries to be stale when the corresponding
lower inode's i_nlink count is zero. This solves a problem caused by the
lower inode being directly modified, without going through the eCryptfs
mount, leaving stale eCryptfs dentries cached and the eCryptfs inode's
i_nlink count not being cleared.

Signed-off-by: Tyler Hicks <tyhicks@canonical.com>
Reported-by: Richard Weinberger <richard@nod.at>
Cc: stable@vger.kernel.org
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