Redfs ubuntu atomic open based on compound requests#153
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Bound payload copies by the slot's actual size and validate the result header's op count against the request. This method of calling compounds is private for redfs. Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com>
Some servers signal "unsupported" as -EOPNOTSUPP rather than -ENOSYS; treat both the same and clear the feature flag. EOPNOTSUPP will only disable that specific call. Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com>
Mirror fuse_lookup_init by moving the CREATE args/inarg setup into a helper. No functional change; prepares for reuse from compound paths. Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com>
Collapse the lookup-then-create round trips in fuse_atomic_open() into a single FUSE_COMPOUND. Gated by fc->compound_lookup_create; falls back to the separate-op path on -ENOSYS/-EOPNOTSUPP. Signed-off-by: Horst Birthelmer <hbirthelmer@ddn.com>
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