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Chris Lu
1826a5d222
isLocalOnlyEntry resolved the pinned-child check through inodeToPath. A kernel Forget drops the path→inode mapping once the lookup count reaches zero, but an async writeback flush — and the file handle, still in fhMap during the drain — is keyed by inode and outlives that mapping. Between Release dispatching the async flush and the flush reaching the filer, a Forget could unpin an in-flight create, so a concurrent directory rebuild would wipe it and the file would ENOENT until the flush lands and the cache refreshes. Key the check off the inode the store entry already carries (createFile stamps it into the placeholder), so the pin no longer depends on a mapping Forget can remove.