The upper level of "if" makes sure (end >= next->vm_end), which means there are only two possibilities: 1) end == next->vm_end 2) end > next->vm_end remove_next is assigned to be (1 + end > next->vm_end). This means if remove_next is 1, end must equal to next->vm_end. The VM_WARN_ON will never trigger. Signed-off-by: Wei Yang <richardw.yang@xxxxxxxxxxxxxxx> --- mm/mmap.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index 907939690a30..18ef68f00f51 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -738,8 +738,6 @@ int __vma_adjust(struct vm_area_struct *vma, unsigned long start, remove_next = 1 + (end > next->vm_end); VM_WARN_ON(remove_next == 2 && end != next->vm_next->vm_end); - VM_WARN_ON(remove_next == 1 && - end != next->vm_end); /* trim end to next, for case 6 first pass */ end = next->vm_end; } -- 2.17.1
