Add "xino" to the list of features which cause undefined behavior for offline changes to the lower tree in the "Changes to underlying filesystems" section of the documentation to make users aware of potential issues if the lower tree is modified and xino was enabled. This omission was noticed by Amir Goldstein, who mentioned that xino is one of the "forbidden" features for making offline changes to the lower tree and that it wasn't currently documented. Signed-off-by: Kevin Locke <kevin@xxxxxxxxxxxxxxx> --- Documentation/filesystems/overlayfs.rst | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Documentation/filesystems/overlayfs.rst b/Documentation/filesystems/overlayfs.rst index 78240e29b0bb..52d47bed9ef8 100644 --- a/Documentation/filesystems/overlayfs.rst +++ b/Documentation/filesystems/overlayfs.rst @@ -476,9 +476,9 @@ a crash or deadlock. Offline changes, when the overlay is not mounted, are allowed to the upper tree. Offline changes to the lower tree are only allowed if the -"metadata only copy up", "inode index", and "redirect_dir" features -have not been used. If the lower tree is modified and any of these -features has been used, the behavior of the overlay is undefined, +"metadata only copy up", "inode index", "redirect_dir", and "xino" +features have not been used. If the lower tree is modified and any of +these features has been used, the behavior of the overlay is undefined, though it will not result in a crash or deadlock. When the overlay NFS export feature is enabled, overlay filesystems -- 2.30.1
