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fix pgoff in "have to relocate" case of mremap()

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Acked-by: Hugh Dickins <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Al Viro 2009-11-24 08:45:24 -05:00
commit 935874141d
1 changed files with 3 additions and 1 deletions
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4
mm/mremap.c
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@ -495,7 +495,9 @@ unsigned long do_mremap(unsigned long addr,
map_flags |= MAP_SHARED;
new_addr = get_unmapped_area(vma->vm_file, 0, new_len,
vma->vm_pgoff, map_flags);
vma->vm_pgoff +
((addr - vma->vm_start) >> PAGE_SHIFT),
map_flags);
if (new_addr & ~PAGE_MASK) {
ret = new_addr;
goto out;