Commit 97955f69 authored by Deming Wang's avatar Deming Wang Committed by Andrew Morton
Browse files

mm/mincore.c: use vma_lookup() instead of find_vma() 

Using vma_lookup() verifies the start address is contained in the found
vma.  This results in easier to read the code.

Link: https://lkml.kernel.org/r/20221007030345.5029-1-wangdeming@inspur.com


Signed-off-by: default avatarDeming Wang <wangdeming@inspur.com>
Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
parent 6fe7d712

mm/mincore.c

+2 −2
Original line number Diff line number Diff line
@@ -190,8 +190,8 @@ static long do_mincore(unsigned long addr, unsigned long pages, unsigned char *v 
	unsigned long end;

	int err;



	vma = find_vma(current->mm, addr);

	if (!vma || addr < vma->vm_start)

	vma = vma_lookup(current->mm, addr);

	if (!vma)

		return -ENOMEM;

	end = min(vma->vm_end, addr + (pages << PAGE_SHIFT));

	if (!can_do_mincore(vma)) {