fix a braino in ovl_d_select_inode()

when opening a directory we want the overlayfs inode, not one from
the topmost layer.

Reported-By: Andrey Jr. Melnikov <temnota.am@gmail.com>
Tested-By: Andrey Jr. Melnikov <temnota.am@gmail.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index f140e3dbfb7bdeb967cad4639c9e32c236a3cced..d9da5a4e93821ddbee9f2fb449666c207417e523 100644 (file)
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -343,6 +343,9 @@ struct inode *ovl_d_select_inode(struct dentry *dentry, unsigned file_flags)
        struct path realpath;
        enum ovl_path_type type;
 
+       if (d_is_dir(dentry))
+               return d_backing_inode(dentry);
+
        type = ovl_path_real(dentry, &realpath);
        if (ovl_open_need_copy_up(file_flags, type, realpath.dentry)) {
                err = ovl_want_write(dentry);