ovl: permission: return ECHILD instead of ENOENT

The error is due to RCU and is temporary.

Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Orabug: 26401569

(backport upstream commit a999d7e161a085e30181d0a88f049bd92112e172)

Signed-off-by: Shan Hai <shan.hai@oracle.com>
Reviewed-by: Somasundaram Krishnasamy <somasundaram.krishnasamy@oracle.com>

diff --git a/fs/overlayfs/inode.c b/fs/overlayfs/inode.c
index 84d87186ac676833f48d9b4d351da404abaafc94..866aab62b14ceafef963d0c1124a9b02b90f7f98 100644 (file)
--- a/fs/overlayfs/inode.c
+++ b/fs/overlayfs/inode.c
@@ -112,7 +112,7 @@ int ovl_permission(struct inode *inode, int mask)
        realinode = d_inode_rcu(realdentry);
        if (!realinode) {
                WARN_ON(!(mask & MAY_NOT_BLOCK));
-               return -ENOENT;
+               return -ECHILD;
        }
 
        /*