linear_page_index(vma, vma->vm_start) of a shmem vma is exactly vm_pgoff. Cc: Vlastimil Babka <vbabka@xxxxxxx> Cc: Hugh Dickins <hughd@xxxxxxxxxx> Signed-off-by: Peter Xu <peterx@xxxxxxxxxx> --- mm/shmem.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/mm/shmem.c b/mm/shmem.c index 96ccf6e941aa..2aef5b8e17c9 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -856,8 +856,7 @@ unsigned long shmem_swap_usage(struct vm_area_struct *vma) return swapped << PAGE_SHIFT; /* Here comes the more involved part */ - return shmem_partial_swap_usage(mapping, - linear_page_index(vma, vma->vm_start), + return shmem_partial_swap_usage(mapping, vma->vm_pgoff, linear_page_index(vma, vma->vm_end)); } -- 2.31.1