5.1-stable patches

[thirdparty/kernel/stable-queue.git] / releases / 4.6.5 / vfs-add-d_real_inode-helper.patch

From a118084432d642eeccb961c7c8cc61525a941fcb Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@redhat.com>
Date: Fri, 20 May 2016 22:13:45 +0200
Subject: vfs: add d_real_inode() helper

From: Miklos Szeredi <mszeredi@redhat.com>

commit a118084432d642eeccb961c7c8cc61525a941fcb upstream.

Needed by the following fix.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
 include/linux/dcache.h |   12 ++++++++++++
 1 file changed, 12 insertions(+)

--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -576,5 +576,17 @@ static inline struct inode *vfs_select_i
 	return inode;
 }
 
+/**
+ * d_real_inode - Return the real inode
+ * @dentry: The dentry to query
+ *
+ * If dentry is on an union/overlay, then return the underlying, real inode.
+ * Otherwise return d_inode().
+ */
+static inline struct inode *d_real_inode(struct dentry *dentry)
+{
+	return d_backing_inode(d_real(dentry));
+}
+
 
 #endif	/* __LINUX_DCACHE_H */