Re: [PATCH] mm/hugetlb: avoid get wrong ptep caused by race

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On Tue, Feb 18, 2020 at 08:10:25PM +0800, Longpeng(Mike) wrote:
>  {
> -	pgd_t *pgd;
> -	p4d_t *p4d;
> -	pud_t *pud;
> -	pmd_t *pmd;
> +	pgd_t *pgdp;
> +	p4d_t *p4dp;
> +	pud_t *pudp, pud;
> +	pmd_t *pmdp, pmd;

Renaming the variables as part of a fix is a really bad idea.  It obscures
the actual fix and makes everybody's life harder.  Plus, it's not even
renaming to follow the normal convention -- there are only two places
(migrate.c and gup.c) which follow this pattern in mm/ while there are
33 that do not.




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