diff options
Diffstat (limited to 'mm/huge_memory.c')
| -rw-r--r-- | mm/huge_memory.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/mm/huge_memory.c b/mm/huge_memory.c index 996e86dbeb43..d93706013a55 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -21,6 +21,7 @@ #include <linux/kthread.h> #include <linux/khugepaged.h> #include <linux/freezer.h> +#include <linux/pfn_t.h> #include <linux/mman.h> #include <linux/pagemap.h> #include <linux/debugfs.h> @@ -931,14 +932,16 @@ int do_huge_pmd_anonymous_page(struct mm_struct *mm, struct vm_area_struct *vma, } static void insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd, unsigned long pfn, pgprot_t prot, bool write) + pmd_t *pmd, pfn_t pfn, pgprot_t prot, bool write) { struct mm_struct *mm = vma->vm_mm; pmd_t entry; spinlock_t *ptl; ptl = pmd_lock(mm, pmd); - entry = pmd_mkhuge(pfn_pmd(pfn, prot)); + entry = pmd_mkhuge(pfn_t_pmd(pfn, prot)); + if (pfn_t_devmap(pfn)) + entry = pmd_mkdevmap(entry); if (write) { entry = pmd_mkyoung(pmd_mkdirty(entry)); entry = maybe_pmd_mkwrite(entry, vma); @@ -949,7 +952,7 @@ static void insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, } int vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, - pmd_t *pmd, unsigned long pfn, bool write) + pmd_t *pmd, pfn_t pfn, bool write) { pgprot_t pgprot = vma->vm_page_prot; /* @@ -961,7 +964,7 @@ int vmf_insert_pfn_pmd(struct vm_area_struct *vma, unsigned long addr, BUG_ON((vma->vm_flags & (VM_PFNMAP|VM_MIXEDMAP)) == (VM_PFNMAP|VM_MIXEDMAP)); BUG_ON((vma->vm_flags & VM_PFNMAP) && is_cow_mapping(vma->vm_flags)); - BUG_ON((vma->vm_flags & VM_MIXEDMAP) && pfn_valid(pfn)); + BUG_ON(!pfn_t_devmap(pfn)); if (addr < vma->vm_start || addr >= vma->vm_end) return VM_FAULT_SIGBUS; |