RDMA/cma: Make the locking for automatic state transition more clear
Re-organize things so the state variable is not read unlocked. The first attempt to go directly from ADDR_BOUND immediately tells us if the ID is already bound, if we can't do that then the attempt inside rdma_bind_addr() to go from IDLE to ADDR_BOUND confirms the ID needs binding. Link: https://lore.kernel.org/r/20200902081122.745412-3-leon@kernel.orgSigned-off-by: NLeon Romanovsky <leonro@nvidia.com> Signed-off-by: NJason Gunthorpe <jgg@nvidia.com>
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