@@ -122,8 +122,15 @@ CONFIG_EROFS_FS=y
 CONFIG_EROFS_FS_XATTR=y
 CONFIG_EROFS_FS_POSIX_ACL=y
 CONFIG_EROFS_FS_SECURITY=y
+CONFIG_EROFS_FS_BACKED_BY_FILE=y
+# Optional cachefiles backend; userspace must explicitly activate caching.
+CONFIG_EROFS_FS_ONDEMAND=y
+CONFIG_FSCACHE=y
+CONFIG_CACHEFILES=y
+CONFIG_CACHEFILES_ONDEMAND=y
 # Alternative to loop/FUSE for userspace-backed layer devices.
 CONFIG_BLK_DEV_UBLK=y
+CONFIG_BLKDEV_UBLK_LEGACY_OPCODES=y
 CONFIG_IO_URING=y
 
 CONFIG_EXT4_FS=y
@@ -144,6 +151,8 @@ CONFIG_BTRFS_FS=m
 CONFIG_OVERLAY_FS=y
 CONFIG_OVERLAY_FS_METACOPY=y
 CONFIG_FUSE_FS=y
+CONFIG_FUSE_PASSTHROUGH=y
+CONFIG_FUSE_IO_URING=y
 CONFIG_BLK_DEV_LOOP=y
 CONFIG_TMPFS_XATTR=y
 CONFIG_TMPFS_POSIX_ACL=y