[PATCH 20/73] union-mount: Add CONFIG_UNION_MOUNT option [ver #2]

[David Howells]

From: Valerie Aurora <vaurora@xxxxxxxxxx>

Add CONFIG_UNION_MOUNT option.

Original-author: Valerie Aurora <vaurora@xxxxxxxxxx>
Signed-off-by: David Howells <dhowells@xxxxxxxxxx>
---

 fs/Kconfig |   12 ++++++++++++
 1 files changed, 12 insertions(+), 0 deletions(-)

diff --git a/fs/Kconfig b/fs/Kconfig
index d621f02..6fc3c69 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -61,6 +61,18 @@ source "fs/notify/Kconfig"
 
 source "fs/quota/Kconfig"
 
+config UNION_MOUNT
+       bool "Union mounts (writable overlays) (EXPERIMENTAL)"
+       depends on EXPERIMENTAL
+       help
+         Union mounts allow you to mount a transparent writable layer over a
+	 read-only file system, for example, an ext3 partition on a hard drive
+	 over a CD-ROM root file system image.
+
+	 See <file:Documentation/filesystems/union-mounts.txt> for details.
+
+	 If unsure, say N.
+
 source "fs/autofs4/Kconfig"
 source "fs/fuse/Kconfig"
 

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