https://lists.gnu.org/archive/html/help-bash/2023-02/msg00053.html
Bash loadable `mkdir -p` has a problem when multiple loadable `mkdir -p` is called on the same directory simultaneously. But I never see coreutils' `mkdir -p` has the same problem. Does coreutils' `mkdir -p` do something extra to guard against the competition on the same directory? -- Regards, Peng
