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Redfs ubuntu noble atomic open#169

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hbirth wants to merge 4 commits into
redfs-ubuntu-noble-6.8.0-58.60from
redfs-ubuntu-noble-atomic-open
Open

Redfs ubuntu noble atomic open#169
hbirth wants to merge 4 commits into
redfs-ubuntu-noble-6.8.0-58.60from
redfs-ubuntu-noble-atomic-open

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@hbirth

@hbirth hbirth commented Jun 3, 2026

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hbirth added 4 commits June 3, 2026 16:53
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>
@hbirth hbirth requested review from bsbernd, cding-ddn and yongzech June 3, 2026 14:56
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