* mount: release flock locks before the close-time flush
Release ran the dirty-handle flush before dropping the file
description's flock locks. A flush parked on a dead filer kept a dead
holder's lock in the table, so a restarted process taking flock on the
same file saw "file already locked" until the mount restarted.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* mount: finish the blocked-flush release test deterministically
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
* mount: let the release test's parked flush talk to a live filer
Marking the handle deleted raced with the flush's unlocked early read
of isDeleted. Pointing the fixture at a live fake filer lets the flush
complete on its own once the handle lock frees, no flag write needed.
Generated with [Devin](https://devin.ai)
Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
---------
Co-authored-by: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>
