4fa6893fae
There are couple of places that check whether the vma size is ok for THP or whether address fits, they are open coded and duplicate, use transhuge_vma_suitable() to do the job by passing in (vma->end - HPAGE_PMD_SIZE). Move vma size check into hugepage_vma_check(). This will make khugepaged_enter() is as same as khugepaged_enter_vma(). There is just one caller for khugepaged_enter(), replace it to khugepaged_enter_vma() and remove khugepaged_enter(). Link: https://lkml.kernel.org/r/20220616174840.1202070-3-shy828301@gmail.com Signed-off-by: Yang Shi <shy828301@gmail.com> Reviewed-by: Zach O'Keefe <zokeefe@google.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Miaohe Lin <linmiaohe@huawei.com> Cc: Vlastimil Babka <vbabka@suse.cz> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>