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b74360369e
Add a kselftest that exercises the RDS getsockopt() paths converted to the getsockopt_iter() / sockopt_t callback: - RDS_RECVERR and SO_RDS_TRANSPORT, which return their int value through copy_to_iter() and report the written length in opt->optlen. - RDS_INFO_*, which obtains the userspace buffer pages with iov_iter_extract_pages() (including a non-zero starting page offset) and lets the info producers copy the snapshot in under a spinlock. Assisted-by: Claude:claude-opus-4-8 Signed-off-by: Breno Leitao <leitao@debian.org> Reviewed-by: Allison Henderson <achender@kernel.org> Link: https://patch.msgid.link/20260608-getsock_more-v3-1-706ecf2ea332@debian.org Signed-off-by: Paolo Abeni <pabeni@redhat.com>