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Subject[PATCH v3 hmm 07/11] RDMA/odp: remove ib_ucontext from ib_umem
Date
From: Jason Gunthorpe <jgg@mellanox.com>

At this point the ucontext is only being stored to access the ib_device,
so just store the ib_device directly instead. This is more natural and
logical as the umem has nothing to do with the ucontext.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
---
drivers/infiniband/core/umem.c | 4 ++--
drivers/infiniband/core/umem_odp.c | 13 ++++++-------
include/rdma/ib_umem.h | 2 +-
3 files changed, 9 insertions(+), 10 deletions(-)

diff --git a/drivers/infiniband/core/umem.c b/drivers/infiniband/core/umem.c
index c59aa57d36510f..5ab9165ffbef0a 100644
--- a/drivers/infiniband/core/umem.c
+++ b/drivers/infiniband/core/umem.c
@@ -242,7 +242,7 @@ struct ib_umem *ib_umem_get(struct ib_udata *udata, unsigned long addr,
return ERR_PTR(-ENOMEM);
}

- umem->context = context;
+ umem->ibdev = context->device;
umem->length = size;
umem->address = addr;
umem->writable = ib_access_writable(access);
@@ -370,7 +370,7 @@ void ib_umem_release(struct ib_umem *umem)
return;
}

- __ib_umem_release(umem->context->device, umem, 1);
+ __ib_umem_release(umem->ibdev, umem, 1);

atomic64_sub(ib_umem_num_pages(umem), &umem->owning_mm->pinned_vm);
__ib_umem_release_tail(umem);
diff --git a/drivers/infiniband/core/umem_odp.c b/drivers/infiniband/core/umem_odp.c
index a02e6e3d7b72fb..da72318e17592f 100644
--- a/drivers/infiniband/core/umem_odp.c
+++ b/drivers/infiniband/core/umem_odp.c
@@ -103,7 +103,7 @@ static void ib_umem_notifier_release(struct mmu_notifier *mn,
*/
smp_wmb();
complete_all(&umem_odp->notifier_completion);
- umem_odp->umem.context->device->ops.invalidate_range(
+ umem_odp->umem.ibdev->ops.invalidate_range(
umem_odp, ib_umem_start(umem_odp),
ib_umem_end(umem_odp));
}
@@ -116,7 +116,7 @@ static int invalidate_range_start_trampoline(struct ib_umem_odp *item,
u64 start, u64 end, void *cookie)
{
ib_umem_notifier_start_account(item);
- item->umem.context->device->ops.invalidate_range(item, start, end);
+ item->umem.ibdev->ops.invalidate_range(item, start, end);
return 0;
}

@@ -319,7 +319,7 @@ struct ib_umem_odp *ib_umem_odp_alloc_implicit(struct ib_udata *udata,
if (!umem_odp)
return ERR_PTR(-ENOMEM);
umem = &umem_odp->umem;
- umem->context = context;
+ umem->ibdev = context->device;
umem->writable = ib_access_writable(access);
umem->owning_mm = current->mm;
umem_odp->is_implicit_odp = 1;
@@ -364,7 +364,7 @@ struct ib_umem_odp *ib_umem_odp_alloc_child(struct ib_umem_odp *root,
if (!odp_data)
return ERR_PTR(-ENOMEM);
umem = &odp_data->umem;
- umem->context = root->umem.context;
+ umem->ibdev = root->umem.ibdev;
umem->length = size;
umem->address = addr;
umem->writable = root->umem.writable;
@@ -477,8 +477,7 @@ static int ib_umem_odp_map_dma_single_page(
u64 access_mask,
unsigned long current_seq)
{
- struct ib_ucontext *context = umem_odp->umem.context;
- struct ib_device *dev = context->device;
+ struct ib_device *dev = umem_odp->umem.ibdev;
dma_addr_t dma_addr;
int remove_existing_mapping = 0;
int ret = 0;
@@ -691,7 +690,7 @@ void ib_umem_odp_unmap_dma_pages(struct ib_umem_odp *umem_odp, u64 virt,
{
int idx;
u64 addr;
- struct ib_device *dev = umem_odp->umem.context->device;
+ struct ib_device *dev = umem_odp->umem.ibdev;

virt = max_t(u64, virt, ib_umem_start(umem_odp));
bound = min_t(u64, bound, ib_umem_end(umem_odp));
diff --git a/include/rdma/ib_umem.h b/include/rdma/ib_umem.h
index 1052d0d62be7d2..a91b2af64ec47b 100644
--- a/include/rdma/ib_umem.h
+++ b/include/rdma/ib_umem.h
@@ -42,7 +42,7 @@ struct ib_ucontext;
struct ib_umem_odp;

struct ib_umem {
- struct ib_ucontext *context;
+ struct ib_device *ibdev;
struct mm_struct *owning_mm;
size_t length;
unsigned long address;
--
2.22.0
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