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

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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: Deming Wang <wangdeming@inspur.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Deming Wang 2022-10-06 23:03:45 -04:00 committed by Andrew Morton
parent 6fe7d712d7
commit 97955f6941
1 changed files with 2 additions and 2 deletions
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4
mm/mincore.c
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@ -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)) {