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2f0805d7c0
The existence of the ceph_mds_request_head_old structure in the MDS client code is no longer required due to improvements in handling different MDS request header versions. This patch removes the now redundant ceph_mds_request_head_old structure and replaces its usage with the flexible and extensible ceph_mds_request_head structure. Changes include: - Modification of find_legacy_request_head to directly cast the pointer to ceph_mds_request_head_legacy without going through the old structure. - Update sizeof calculations in create_request_message to use offsetofend for consistency and future-proofing, rather than referencing the old structure. - Use of the structured ceph_mds_request_head directly instead of the old one. Additionally, this consolidation normalizes the handling of request_head_version v1 to align with versions v2 and v3, leading to a more consistent and maintainable codebase. These changes simplify the codebase and reduce potential confusion stemming from the existence of an obsolete structure. Signed-off-by: Liang Jie <liangjie@lixiang.com> Reviewed-by: Viacheslav Dubeyko <Slava.Dubeyko@ibm.com> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>