RDMA: Restore ability to fail on PD deallocate
The IB verbs objects are counted by the kernel and ib_core ensures that deallocate PD will success so it will be called once all other objects that depends on PD will be released. This is achieved by managing various reference counters on such objects. The mlx5 driver didn't follow this standard flow when allowed DEVX objects that are not managed by ib_core to be interleaved with the ones under ib_core responsibility. In such interleaved scenarios deallocate command can fail and ib_core will leave uobject in internal DB and attempt to clean it later to free resources anyway. This change partially restores returned value from dealloc_pd() for all drivers, but keeping in mind that non-DEVX devices and kernel verbs paths shouldn't fail. Fixes: 21a428a0 ("RDMA: Handle PD allocations by IB/core") Link: https://lore.kernel.org/r/20200907120921.476363-2-leon@kernel.org Signed-off-by:Leon Romanovsky <leonro@mellanox.com> Signed-off-by:
Jason Gunthorpe <jgg@nvidia.com>
parent
558d52b2
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