diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/memory.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/mm/memory.c b/mm/memory.c index c2d4c477e5b..22bfa7a47a0 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -1511,6 +1511,7 @@ int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, unsigned long pfn) { int ret; + pgprot_t pgprot = vma->vm_page_prot; /* * Technically, architectures with pte_special can avoid all these * restrictions (same for remap_pfn_range). However we would like @@ -1525,10 +1526,10 @@ int vm_insert_pfn(struct vm_area_struct *vma, unsigned long addr, if (addr < vma->vm_start || addr >= vma->vm_end) return -EFAULT; - if (track_pfn_vma_new(vma, vma->vm_page_prot, pfn, PAGE_SIZE)) + if (track_pfn_vma_new(vma, &pgprot, pfn, PAGE_SIZE)) return -EINVAL; - ret = insert_pfn(vma, addr, pfn, vma->vm_page_prot); + ret = insert_pfn(vma, addr, pfn, pgprot); if (ret) untrack_pfn_vma(vma, pfn, PAGE_SIZE); @@ -1671,9 +1672,15 @@ int remap_pfn_range(struct vm_area_struct *vma, unsigned long addr, vma->vm_flags |= VM_IO | VM_RESERVED | VM_PFNMAP; - err = track_pfn_vma_new(vma, prot, pfn, PAGE_ALIGN(size)); - if (err) + err = track_pfn_vma_new(vma, &prot, pfn, PAGE_ALIGN(size)); + if (err) { + /* + * To indicate that track_pfn related cleanup is not + * needed from higher level routine calling unmap_vmas + */ + vma->vm_flags &= ~(VM_IO | VM_RESERVED | VM_PFNMAP); return -EINVAL; + } BUG_ON(addr >= end); pfn -= addr >> PAGE_SHIFT; |