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mm/madvise: 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/20220311082731.63513-1-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Miaohe Lin 2022-03-22 14:46:41 -07:00 committed by Linus Torvalds
parent da358d5c0e
commit 531037a065
1 changed files with 2 additions and 2 deletions
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4
mm/madvise.c
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@ -849,8 +849,8 @@ static long madvise_populate(struct vm_area_struct *vma,
* our VMA might have been split. * our VMA might have been split.
*/ */
if (!vma || start >= vma->vm_end) { if (!vma || start >= vma->vm_end) {
vma = find_vma(mm, start); vma = vma_lookup(mm, start);
if (!vma || start < vma->vm_start) if (!vma)
return -ENOMEM; return -ENOMEM;
} }