On 2023/12/21 14:59, Yang Shi wrote:
From: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx> We avoid allocating THP for temporary stack, even tnough khugepaged_enter_vma() is called for stack VMAs, it actualy returns false. So no need to call it in the first place at all. Signed-off-by: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>
Reviewed-by: Yin Fengwei <fengwei.yin@xxxxxxxxx>
--- mm/mmap.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index b78e83d351d2..2ff79b1d1564 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2046,7 +2046,6 @@ static int expand_upwards(struct vm_area_struct *vma, unsigned long address) } } anon_vma_unlock_write(vma->anon_vma); - khugepaged_enter_vma(vma, vma->vm_flags); mas_destroy(&mas); validate_mm(mm); return error; @@ -2140,7 +2139,6 @@ int expand_downwards(struct vm_area_struct *vma, unsigned long address) } } anon_vma_unlock_write(vma->anon_vma); - khugepaged_enter_vma(vma, vma->vm_flags); mas_destroy(&mas); validate_mm(mm); return error;
