From 935874141df839c706cd6cdc438e85eb69d1525e Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 24 Nov 2009 08:45:24 -0500 Subject: [PATCH] fix pgoff in "have to relocate" case of mremap() Acked-by: Hugh Dickins Signed-off-by: Al Viro --- mm/mremap.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/mm/mremap.c b/mm/mremap.c index 84efffb2d2c4..bbbbbf507ff3 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -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; -- 2.20.1