Merge branch 'drm-ttm-unmappable' into drm-core-next

[pandora-kernel.git] / fs / proc / task_mmu.c

diff --git a/fs/proc/task_mmu.c b/fs/proc/task_mmu.c
index a05a669..0705534 100644 (file)
--- a/fs/proc/task_mmu.c
+++ b/fs/proc/task_mmu.c
@@ -662,31 +662,18 @@ static u64 huge_pte_to_pagemap_entry(pte_t pte, int offset)
        return pme;
 }
 
-static int pagemap_hugetlb_range(pte_t *pte, unsigned long addr,
-                                unsigned long end, struct mm_walk *walk)
+/* This function walks within one hugetlb entry in the single call */
+static int pagemap_hugetlb_range(pte_t *pte, unsigned long hmask,
+                                unsigned long addr, unsigned long end,
+                                struct mm_walk *walk)
 {
-       struct vm_area_struct *vma;
        struct pagemapread *pm = walk->private;
-       struct hstate *hs = NULL;
        int err = 0;
+       u64 pfn;
 
-       vma = find_vma(walk->mm, addr);
-       if (vma)
-               hs = hstate_vma(vma);
        for (; addr != end; addr += PAGE_SIZE) {
-               u64 pfn = PM_NOT_PRESENT;
-
-               if (vma && (addr >= vma->vm_end)) {
-                       vma = find_vma(walk->mm, addr);
-                       if (vma)
-                               hs = hstate_vma(vma);
-               }
-
-               if (vma && (vma->vm_start <= addr) && is_vm_hugetlb_page(vma)) {
-                       /* calculate pfn of the "raw" page in the hugepage. */
-                       int offset = (addr & ~huge_page_mask(hs)) >> PAGE_SHIFT;
-                       pfn = huge_pte_to_pagemap_entry(*pte, offset);
-               }
+               int offset = (addr & ~hmask) >> PAGE_SHIFT;
+               pfn = huge_pte_to_pagemap_entry(*pte, offset);
                err = add_to_pagemap(addr, pfn, pm);
                if (err)
                        return err;