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authorJason Gunthorpe <jgg@mellanox.com>2019-10-09 13:09:32 -0300
committerJason Gunthorpe <jgg@mellanox.com>2019-10-28 16:41:14 -0300
commit5256edcb98a14b11409a2d323f56a70a8b366363 (patch)
tree45b6a723c59bc1f7ff6511c266375023b2095732 /include/rdma/ib_umem_odp.h
parentRDMA/mlx5: Avoid double lookups on the pagefault path (diff)
downloadlinux-dev-5256edcb98a14b11409a2d323f56a70a8b366363.tar.xz
linux-dev-5256edcb98a14b11409a2d323f56a70a8b366363.zip
RDMA/mlx5: Rework implicit ODP destroy
Use SRCU in a sensible way by removing all MRs in the implicit tree from the two xarrays (the update operation), then a synchronize, followed by a normal single threaded teardown. This is only a little unusual from the normal pattern as there can still be some work pending in the unbound wq that may also require a workqueue flush. This is tracked with a single atomic, consolidating the redundant existing atomics and wait queue. For understand-ability the entire ODP implicit create/destroy flow now largely exists in a single pair of functions within odp.c, with a few support functions for tearing down an unused child. Link: https://lore.kernel.org/r/20191009160934.3143-13-jgg@ziepe.ca Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to '')
-rw-r--r--include/rdma/ib_umem_odp.h2
1 files changed, 0 insertions, 2 deletions
diff --git a/include/rdma/ib_umem_odp.h b/include/rdma/ib_umem_odp.h
index 28078efc3833..09b0e4494986 100644
--- a/include/rdma/ib_umem_odp.h
+++ b/include/rdma/ib_umem_odp.h
@@ -78,9 +78,7 @@ struct ib_umem_odp {
bool is_implicit_odp;
struct completion notifier_completion;
- int dying;
unsigned int page_shift;
- struct work_struct work;
};
static inline struct ib_umem_odp *to_ib_umem_odp(struct ib_umem *umem)