config OVERLAY_FS | |
tristate "Overlay filesystem support" | |
help | |
An overlay filesystem combines two filesystems - an 'upper' filesystem | |
and a 'lower' filesystem. When a name exists in both filesystems, the | |
object in the 'upper' filesystem is visible while the object in the | |
'lower' filesystem is either hidden or, in the case of directories, | |
merged with the 'upper' object. | |
For more information see Documentation/filesystems/overlayfs.txt |