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| author | Leon Romanovsky <leonro@mellanox.com> | 2019-10-10 10:11:04 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2019-10-23 15:58:31 -0300 |
| commit | cf7e93c12fbc0f18cbea0571406e302d6904a7ac (patch) | |
| tree | 3f959caf8bbe222aca808546f0fe399f0ae3b62f /drivers/infiniband/core/restrack.h | |
| parent | c4c8aff5a9ddb061a6246fb34eabdb9244b4d8f6 (diff) | |
| download | linux-cf7e93c12fbc0f18cbea0571406e302d6904a7ac.tar.gz | |
RDMA/restrack: Remove PID namespace support
IB resources are bounded to IB device and file descriptors, both entities
are unaware to PID namespaces and to task lifetime.
The difference in model caused to unpredictable behavior for the following
scenario:
1. Create FD and context
2. Share it with ephemeral child
3. Create any object and exit that child
The end result of this flow, that those newly created objects will be
tracked by restrack, but won't be visible for users because task_struct
associated with them already exited.
The right thing is to rely on net namespace only for any filtering
purposes and drop PID namespace.
Link: https://lore.kernel.org/r/20191010071105.25538-2-leon@kernel.org
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/core/restrack.h')
| -rw-r--r-- | drivers/infiniband/core/restrack.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/infiniband/core/restrack.h b/drivers/infiniband/core/restrack.h index 7bd177cc0a61..d084e5f89849 100644 --- a/drivers/infiniband/core/restrack.h +++ b/drivers/infiniband/core/restrack.h @@ -27,5 +27,4 @@ int rdma_restrack_init(struct ib_device *dev); void rdma_restrack_clean(struct ib_device *dev); void rdma_restrack_attach_task(struct rdma_restrack_entry *res, struct task_struct *task); -bool rdma_is_visible_in_pid_ns(struct rdma_restrack_entry *res); #endif /* _RDMA_CORE_RESTRACK_H_ */ |