From: Miaohe Lin <linmiaohe@xxxxxxxxxx> Subject: khugepaged: use helper function range_in_vma() in collapse_pte_mapped_thp() Patch series "Cleanup for khugepaged". This series contains cleanups to remove unnecessary out label and meaningless !pte_present() check. Also use helper function to simplify the code. More details can be found in the respective changelogs. This patch (of 3): We could use helper function range_in_vma() to check whether the desired range is inside the vma to simplify the code. Link: https://lkml.kernel.org/r/20210325135647.64106-1-linmiaohe@xxxxxxxxxx Link: https://lkml.kernel.org/r/20210325135647.64106-2-linmiaohe@xxxxxxxxxx Signed-off-by: Miaohe Lin <linmiaohe@xxxxxxxxxx> Reviewed-by: Zi Yan <ziy@xxxxxxxxxx> Cc: Mike Kravetz <mike.kravetz@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/khugepaged.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/mm/khugepaged.c~khugepaged-use-helper-function-range_in_vma-in-collapse_pte_mapped_thp +++ a/mm/khugepaged.c @@ -1446,7 +1446,7 @@ void collapse_pte_mapped_thp(struct mm_s int i; if (!vma || !vma->vm_file || - vma->vm_start > haddr || vma->vm_end < haddr + HPAGE_PMD_SIZE) + !range_in_vma(vma, haddr, haddr + HPAGE_PMD_SIZE)) return; /* _
