generic/645: Add hint for expected failure with old kernel

The following hint is added to reflect that any old kernel
without kernel commit dacfd001eaf2 (“fs/mnt_idmapping.c: Return
-EINVAL when no map is written”) is expected to fail this generic
645 test since without that commit, mount_setattr won’t return
EINVAL when attempting to create an idmapped mount using a user
namespace with no mappings.

Reported-by: Zorro Lang <zlang@redhat.com>
Signed-off-by: Taylor Jackson <tjackson9431@gmail.com>
Reviewed-by: Zorro Lang <zlang@redhat.com>
Reviewed-by: Christian Brauner <brauner@kernel.org>
Signed-off-by: Zorro Lang <zlang@kernel.org>

diff --git a/tests/generic/645 b/tests/generic/645
index 556d2450299e97d844307f6e265a4d5cbb85330b..249e9cc0791609da1a5547290b5fc0363a6982de 100755 (executable)
--- a/tests/generic/645
+++ b/tests/generic/645
@@ -17,6 +17,8 @@ _begin_fstest auto quick idmapped mount
 _supported_fs generic
 _require_idmapped_mounts
 _require_test
+_wants_kernel_commit dacfd001eaf2 \
+       "fs/mnt_idmapping.c: Return -EINVAL when no map is written"
 
 echo "Silence is golden"