ovl: multi-layer readdir
If multiple lower layers exist, merge them as well in readdir according to
the same rules as merging upper with lower. I.e. take whiteouts and opaque
directories into account on all but the lowers layer.
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
diff --git a/fs/overlayfs/super.c b/fs/overlayfs/super.c
index 07e4c57..c245043 100644
--- a/fs/overlayfs/super.c
+++ b/fs/overlayfs/super.c
@@ -81,6 +81,9 @@
} else if (!oe->opaque) {
type |= __OVL_PATH_PURE;
}
+ } else {
+ if (oe->numlower > 1)
+ type |= __OVL_PATH_MERGE;
}
return type;
}