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IB/mlx5: Ranges in implicit ODP MR inherit its write access

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A sub-range in ODP implicit MR should take its write permission from the
MR and not be set always to allow.

Fixes: d07d1d70ce ("IB/umem: Update on demand page (ODP) support")
Signed-off-by: Moni Shoua <monis@mellanox.com>
Reviewed-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Moni Shoua 2019-01-22 09:16:08 +02:00 committed by Jason Gunthorpe
parent 8ba0ddd094
commit da6a496a34
3 changed files with 5 additions and 4 deletions
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5
drivers/infiniband/core/umem_odp.c
View File

@ -332,9 +332,10 @@ static void put_per_mm(struct ib_umem_odp *umem_odp)
mmu_notifier_call_srcu(&per_mm->rcu, free_per_mm);
}
struct ib_umem_odp *ib_alloc_odp_umem(struct ib_ucontext_per_mm *per_mm,
struct ib_umem_odp *ib_alloc_odp_umem(struct ib_umem_odp *root,
unsigned long addr, size_t size)
{
struct ib_ucontext_per_mm *per_mm = root->per_mm;
struct ib_ucontext *ctx = per_mm->context;
struct ib_umem_odp *odp_data;
struct ib_umem *umem;
@ -349,7 +350,7 @@ struct ib_umem_odp *ib_alloc_odp_umem(struct ib_ucontext_per_mm *per_mm,
umem->length = size;
umem->address = addr;
umem->page_shift = PAGE_SHIFT;
umem->writable = 1;
umem->writable = root->umem.writable;
umem->is_odp = 1;
odp_data->per_mm = per_mm;

2
drivers/infiniband/hw/mlx5/odp.c
View File

@ -439,7 +439,7 @@ next_mr:
if (nentries)
nentries++;
} else {
odp = ib_alloc_odp_umem(odp_mr->per_mm, addr,
odp = ib_alloc_odp_umem(odp_mr, addr,
MLX5_IMR_MTT_SIZE);
if (IS_ERR(odp)) {
mutex_unlock(&odp_mr->umem_mutex);

2
include/rdma/ib_umem_odp.h
View File

@ -116,7 +116,7 @@ struct ib_ucontext_per_mm {
};
int ib_umem_odp_get(struct ib_umem_odp *umem_odp, int access);
struct ib_umem_odp *ib_alloc_odp_umem(struct ib_ucontext_per_mm *per_mm,
struct ib_umem_odp *ib_alloc_odp_umem(struct ib_umem_odp *root_umem,
unsigned long addr, size_t size);
void ib_umem_odp_release(struct ib_umem_odp *umem_odp);