Hi Zorro Since Christian doesn't send a new patchset(for rename idmap-mount) based on lastest xfstests, should I send a v4 patch for the following patches today? "idmapped-mounts: Reset errno to zero after detect fs_allow_idmap" " idmapped-mounts: Add mknodat operation in setgid test" "idmapped-mounts: Add open with O_TMPFILE operation in setgid test" So you can merge these three patches if you plan to announce a new xfstests version in this weekend. What do you think about it? Best Regards Yang Xu > If we run case on old kernel that doesn't support mount_setattr and > then fail on our own function before call is_setgid/is_setuid function > to reset errno, run_test will print "Function not implement" error. > > Signed-off-by: Yang Xu<xuyang2018.jy@xxxxxxxxxxx> > --- > src/idmapped-mounts/idmapped-mounts.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/src/idmapped-mounts/idmapped-mounts.c b/src/idmapped-mounts/idmapped-mounts.c > index 4cf6c3bb..8e6405c5 100644 > --- a/src/idmapped-mounts/idmapped-mounts.c > +++ b/src/idmapped-mounts/idmapped-mounts.c > @@ -14070,6 +14070,8 @@ int main(int argc, char *argv[]) > die("failed to open %s", t_mountpoint_scratch); > > t_fs_allow_idmap = fs_allow_idmap(); > + /* don't copy ENOSYS errno to child process on older kernel */ > + errno = 0; > if (supported) { > /* > * Caller just wants to know whether the filesystem we're on