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RDMA: Remove rdma_user_mmap_page

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Upon further research drivers that want this should simply call the core
function vm_insert_page(). The VMA holds a reference on the page and it
will be automatically freed when the last reference drops. No need for
disassociate to sequence the cleanup.

Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Jason Gunthorpe
2019-04-16 14:07:30 +03:00
förälder ddcdc368b1
incheckning 4eb6ab13b9
3 ändrade filer med 23 tillägg och 72 borttagningar
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12
drivers/infiniband/hw/mlx5/main.c
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@@ -2060,22 +2060,22 @@ static int mlx5_ib_mmap_clock_info_page(struct mlx5_ib_dev *dev,
struct vm_area_struct *vma,
struct mlx5_ib_ucontext *context)
{
if (vma->vm_end - vma->vm_start != PAGE_SIZE)
if ((vma->vm_end - vma->vm_start != PAGE_SIZE) ||
!(vma->vm_flags & VM_SHARED))
return -EINVAL;
if (get_index(vma->vm_pgoff) != MLX5_IB_CLOCK_INFO_V1)
return -EOPNOTSUPP;
if (vma->vm_flags & VM_WRITE)
if (vma->vm_flags & (VM_WRITE | VM_EXEC))
return -EPERM;
vma->vm_flags &= ~VM_MAYWRITE;
vma->vm_flags &= ~(VM_MAYWRITE | VM_MAYEXEC);
if (!dev->mdev->clock_info)
return -EOPNOTSUPP;
return rdma_user_mmap_page(&context->ibucontext, vma,
virt_to_page(dev->mdev->clock_info),
PAGE_SIZE);
return vm_insert_page(vma, vma->vm_start,
virt_to_page(dev->mdev->clock_info));
}
static int uar_mmap(struct mlx5_ib_dev *dev, enum mlx5_ib_mmap_cmd cmd,