summaryrefslogtreecommitdiffstats
path: root/fs/overlayfs/Kconfig
diff options
context:
space:
mode:
Diffstat (limited to 'fs/overlayfs/Kconfig')
-rw-r--r--fs/overlayfs/Kconfig17
1 files changed, 17 insertions, 0 deletions
diff --git a/fs/overlayfs/Kconfig b/fs/overlayfs/Kconfig
index ce6ff5a0a6e4..17032631c5cf 100644
--- a/fs/overlayfs/Kconfig
+++ b/fs/overlayfs/Kconfig
@@ -86,3 +86,20 @@ config OVERLAY_FS_NFS_EXPORT
case basis with the "nfs_export=on" mount option.
Say N unless you fully understand the consequences.
+
+config OVERLAY_FS_XINO_AUTO
+ bool "Overlayfs: auto enable inode number mapping"
+ default n
+ depends on OVERLAY_FS
+ help
+ If this config option is enabled then overlay filesystems will use
+ unused high bits in undelying filesystem inode numbers to map all
+ inodes to a unified address space. The mapped 64bit inode numbers
+ might not be compatible with applications that expect 32bit inodes.
+
+ If compatibility with applications that expect 32bit inodes is not an
+ issue, then it is safe and recommended to say Y here.
+
+ For more information, see Documentation/filesystems/overlayfs.txt
+
+ If unsure, say N.