From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: mm/memory.c: use helper function range_in_vma() Use helper function range_in_vma() to check if address, address + size are within the vma range. Minor readability improvement. Link: https://lkml.kernel.org/r/20220219021441.29173-1-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/memory.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/memory.c~mm-use-helper-function-range_in_vma +++ a/mm/memory.c @@ -1715,7 +1715,7 @@ static void zap_page_range_single(struct void zap_vma_ptes(struct vm_area_struct *vma, unsigned long address, unsigned long size) { - if (address < vma->vm_start || address + size > vma->vm_end || + if (!range_in_vma(vma, address, address + size) || !(vma->vm_flags & VM_PFNMAP)) return; _
