diff options
Diffstat (limited to 'mm/hmm.c')
| -rw-r--r-- | mm/hmm.c | 19 |
1 files changed, 9 insertions, 10 deletions
@@ -299,14 +299,14 @@ static int hmm_vma_do_fault(struct mm_walk *walk, unsigned long addr, struct hmm_vma_walk *hmm_vma_walk = walk->private; struct hmm_range *range = hmm_vma_walk->range; struct vm_area_struct *vma = walk->vma; - int r; + vm_fault_t ret; flags |= hmm_vma_walk->block ? 0 : FAULT_FLAG_ALLOW_RETRY; flags |= write_fault ? FAULT_FLAG_WRITE : 0; - r = handle_mm_fault(vma, addr, flags); - if (r & VM_FAULT_RETRY) + ret = handle_mm_fault(vma, addr, flags); + if (ret & VM_FAULT_RETRY) return -EBUSY; - if (r & VM_FAULT_ERROR) { + if (ret & VM_FAULT_ERROR) { *pfn = range->values[HMM_PFN_ERROR]; return -EFAULT; } @@ -676,7 +676,8 @@ int hmm_vma_get_pfns(struct hmm_range *range) return -EINVAL; /* FIXME support hugetlb fs */ - if (is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_SPECIAL)) { + if (is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_SPECIAL) || + vma_is_dax(vma)) { hmm_pfns_special(range); return -EINVAL; } @@ -849,7 +850,8 @@ int hmm_vma_fault(struct hmm_range *range, bool block) return -EINVAL; /* FIXME support hugetlb fs */ - if (is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_SPECIAL)) { + if (is_vm_hugetlb_page(vma) || (vma->vm_flags & VM_SPECIAL) || + vma_is_dax(vma)) { hmm_pfns_special(range); return -EINVAL; } @@ -971,10 +973,7 @@ static RADIX_TREE(hmm_devmem_radix, GFP_KERNEL); static void hmm_devmem_radix_release(struct resource *resource) { - resource_size_t key, align_start, align_size; - - align_start = resource->start & ~(PA_SECTION_SIZE - 1); - align_size = ALIGN(resource_size(resource), PA_SECTION_SIZE); + resource_size_t key; mutex_lock(&hmm_devmem_lock); for (key = resource->start; |