[Filesystem Component] mkdir race condition fix #11626
bug #11726 [Filesystem Component] mkdir race condition fix #11626 (kcassam)

This PR was squashed before being merged into the 2.3 branch (closes #11726).

Discussion
----------

[Filesystem Component] mkdir race condition fix #11626

[Filesystem Component] Fix mkdir race condition

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | #11626
| License       | MIT
| Doc PR        | none

Commits
-------

0483452 [Filesystem Component] mkdir race condition fix #11626