Re: [PATCH] mm: Remove redundant PageMemcgKmem(page) call

[Matthew Wilcox]

On Wed, Feb 12, 2025 at 10:06:27AM +0800, Shengken Lin wrote:
> The function of PageMemcgKmem(page) is the same as that of
> folio_memcg_kmem(folio).
> 
> Since __memcg_kmem_uncharge_page already uses folio_memcg_kmem to check
> if a folio has been uncharged, calling PageMemcgKmem(page) before
> __memcg_kmem_uncharge_page is redundant.

But it saves a function call.  NAK.