* fix(mount): don't strand a directory cached-but-empty when an off-loop wipe races a rebuild
Idle eviction, kernel Forget, and the copy-range fallback cleared a
directory's cached entries directly, off the metaCache apply loop, after
resetting the cached flag in inodeToPath as a separate step. A concurrent
rebuild could publish a fresh listing (markCachedFn) in between, so the late
DeleteFolderChildren left the directory flagged cached over an empty store.
lookupEntry then returns an authoritative ENOENT and ReadDir returns nothing,
so every file in the directory disappears from the mount although it is still
present on the filer.
Route those wipes through a new apply-loop step that resets the flag and wipes
the store together, serialized with a build's markCachedFn, and skips a
directory while it is building.
* fix(mount): route the meta-event retry cleanup through the apply-loop purge
The subscription-retry callback wiped the mount root's cached children
directly off the apply loop and reset the cache flags as a separate step — the
same pattern that can leave a concurrently-rebuilding root cached-but-empty.
Invalidate all flags (safe on its own, it never deletes entries) then purge the
root's children through the apply loop.
Chris Lu
b5a952bcb1