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IB/umem: Add support to huge ODP

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Add IB_ACCESS_HUGETLB ib_reg_mr flag.
Hugetlb region registered with this flag
will use single translation entry per huge page.

Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Artemy Kovalyov
2017-04-05 09:23:57 +03:00
committed by Doug Ledford
parent b2ac91885b
commit 0008b84ea9
4 changed files with 23 additions and 5 deletions
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6
include/rdma/ib_umem_odp.h
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@@ -84,7 +84,8 @@ struct ib_umem_odp {
#ifdef CONFIG_INFINIBAND_ON_DEMAND_PAGING
int ib_umem_odp_get(struct ib_ucontext *context, struct ib_umem *umem);
int ib_umem_odp_get(struct ib_ucontext *context, struct ib_umem *umem,
int access);
struct ib_umem *ib_alloc_odp_umem(struct ib_ucontext *context,
unsigned long addr,
size_t size);
@@ -154,7 +155,8 @@ static inline int ib_umem_mmu_notifier_retry(struct ib_umem *item,
#else /* CONFIG_INFINIBAND_ON_DEMAND_PAGING */
static inline int ib_umem_odp_get(struct ib_ucontext *context,
struct ib_umem *umem)
struct ib_umem *umem,
int access)
{
return -EINVAL;
}