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Chris LuandGitHub
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* filer: POSIX advisory lock set primitive (phase 1) Pure per-inode conflict/coalesce/range-split logic for fcntl byte-range and flock whole-file locks, extracted from the mount's PosixLockTable without its wait queue or inode-map concurrency. Owner identity is (Sid, Owner) so the same FUSE owner on different mounts never aliases, and ReleaseSession reaps a dead mount's locks. The owner filer will hold one Set per inode under the per-path lock; no concurrency control here. * test: tolerate transient FUSE invisibility in ConcurrentReadWrite A concurrent truncating overwrite leaves a short-lived dentry/cache window where the file is momentarily ENOENT to another opener. Retry the reads and writes a few times before failing, as ConcurrentDirectoryOperations does. * filer: serialize the POSIX lock set for entry metadata Versioned fixed-width binary encoding of a Set, so an inode's held locks can ride in its entry metadata: a lock op materializes the Set from the blob, applies under the per-path lock, and writes it back. Empty set encodes to nil so a lock-free inode carries no blob. * filer: encode the POSIX lock set as protobuf Replace the hand-rolled fixed-width codec with a LockSetProto message, so the metadata blob can gain fields without a format-version migration. proto.Unmarshal already rejects a malformed blob, so the explicit version and length checks go away. Marshal now returns an error to match.