[PATCH 3/13] maps#2: Remove vma from args in the page walker

[Matt Mackall]

Remove vma from args in the page walker

This makes the walker more generic.

Signed-off-by: Matt Mackall <[EMAIL PROTECTED]>

Index: mm/fs/proc/task_mmu.c
===================================================================
--- mm.orig/fs/proc/task_mmu.c  2007-03-24 21:33:50.000000000 -0500
+++ mm/fs/proc/task_mmu.c       2007-03-24 21:33:52.000000000 -0500
@@ -313,25 +313,26 @@ static void walk_pud_range(pgd_t *pgd, u
 }
 
 /*
- * walk_page_range - walk the page tables of a VMA with a callback
- * @vma - VMA to walk
+ * walk_page_range - walk a memory map's page tables with a callback
+ * @mm - memory map to walk
+ * @addr - starting address
+ * @end - ending address
  * @action - callback invoked for every bottom-level (PTE) page table
  * @private - private data passed to the callback function
  *
  * Recursively walk the page table for the memory area in a VMA, calling
  * a callback for every bottom-level (PTE) page table.
  */
-static void walk_page_range(struct vm_area_struct *vma,
+static void walk_page_range(struct mm_struct *mm,
+                           unsigned long addr, unsigned long end,
                            void (*action)(pmd_t *, unsigned long,
                                           unsigned long, void *),
                            void *private)
 {
-       unsigned long addr = vma->vm_start;
-       unsigned long end = vma->vm_end;
        pgd_t *pgd;
        unsigned long next;
 
-       for (pgd = pgd_offset(vma->vm_mm, addr); addr != end;
+       for (pgd = pgd_offset(mm, addr); addr != end;
             pgd++, addr = next) {
                next = pgd_addr_end(addr, end);
                if (pgd_none_or_clear_bad(pgd))
@@ -348,7 +349,8 @@ static int show_smap(struct seq_file *m,
        memset(&mss, 0, sizeof mss);
        mss.vma = vma;
        if (vma->vm_mm && !is_vm_hugetlb_page(vma))
-               walk_page_range(vma, smaps_pte_range, &mss);
+               walk_page_range(vma->vm_mm, vma->vm_start, vma->vm_end,
+                               smaps_pte_range, &mss);
        return show_map_internal(m, v, &mss);
 }
 
@@ -359,7 +361,8 @@ void clear_refs_smap(struct mm_struct *m
        down_read(&mm->mmap_sem);
        for (vma = mm->mmap; vma; vma = vma->vm_next)
                if (vma->vm_mm && !is_vm_hugetlb_page(vma))
-                       walk_page_range(vma, clear_refs_pte_range, vma);
+                       walk_page_range(vma->vm_mm, vma->vm_start, vma->vm_end,
+                                       clear_refs_pte_range, vma);
        flush_tlb_mm(mm);
        up_read(&mm->mmap_sem);
 }
-
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